DIY 12-volt angle grinder

Making a mini angle grinder

12-volt, angle, grinder

The most important part is to put the bearing on a slightly processed (using a drill and a file) support from the mat. computer board and press in the cable.

We disassemble the crocodile clip and use a homemade clamp to attach the bearing to it. We fix a piece of cable from the speedometer with plastic clamps.

The electric motor itself, together with the relay, is placed in a can of sealant cut to size (we fill the voids with pieces of rubber). Additionally, we fix it with a bolt that abuts against the motor housing from turning.

The cutting disc is also homemade. We make a protective plastic cover for it.

The electrical circuit is simple: when you press the mini-button, the relay turns on, which in turn closes the power contacts and supplies voltage to the electric motor.

After assembly, we get a new design with an unusual arrangement of the motor. When working, we hold the tool in the same way as a regular “angle grinder”, only now it has become more mobile.

I make discs from ordinary cut-off 200 mm aluminum oxide. The processing disc itself was broken out of a large 200 mm by pasatizh. 15 V power is supplied to the electric motor through a diode bridge.

The motor is removed from a 9 volt electric screwdriver. Unfortunately, I do not know its brand or power, I have to judge only by consumption. Here is the engine itself on

Power supply of a homemade angle grinder 15 V. The current, depending on the load, varies from 2 to 13 amperes. You can also put a diamond wheel on it, it will last for a long time and the processing purity is much higher.

In the video, the “yellow donut” transformer is taken from the Raduga-2 movie projector, it has a 20V winding with a 15V tap, it was intended to power the main lamp with a power of about 300 watts and has a rather high current. Rectifier diodes D242 during long-term operation without radiators get quite hot, so it is worth equipping them with a heat sink, and at a particularly heavy load. forced cooling. It will be even better if the power supply is equipped with the ability to adjust the voltage, in this case you can smoothly change the disc speed.

do-it-yourself angle grinder from a drill and a chainsaw

Quite often in everyday life it is necessary to repurpose working tools. This also applies to the situation when you need to use an angle grinder, but this is not available. Help to be. gasoline. as it is also called an electric saw, what is the duration of the project, what tools are available.

A common and efficient method to get an angle grinder from an electric saw

angle grinder from chainsaw and electric saw

The more common method to make an angle grinder at home is to convert it from a gas or electric saw. Because of the finished fixture

  • Possibility of autonomous work.
  • Highest power.
  • Operating price.

For an angle grinder, you need to reduce the risk of disc breakage. For these purposes, the saw is equipped with a special protective cover. It is also worth lowering the number of revolutions using the speed reducer.

angle grinder from a drill

For such a transformation, the following tools will come in handy at home:

While starting the transformation, you need to make sure that the drill itself will not be useful in the work soon. And then it’s enough to follow the step-by-step annotation:

  • Select attachment for
  • Take a small diameter steel rod and grind off one of its edges. This action is necessary for the best fit specifically into the nozzle. Also, for the best grip, you should slightly grind off the places that will come into contact with the petals of the cartridge and the rod itself.
  • Fix all parts.

A quick and simple method of creating an angle grinder

There is also a second, more difficult method to achieve the desired result.

  • The chuck is removed from the drill. For an angle grinder, it is not needed, therefore there is an option to clean it, lubricate it and place it in storage.
  • Choose an attachment for the upcoming instrument. It is better that it was a part of strong steel, a lightweight version will be inappropriate here.
  • Rod selection. It needs such a length that its part protrudes outside the drill by 1.8-1.9 cm. Then one of its ends should be grinded off with a rasp, so that and therefore a bar comes out, completely coinciding with the nest in the nozzle itself. Before the joint, it is worth smearing its ends with machine oil for the best passage.
  • The installation of the ball bearing is carried out to the place for the output. A bar will be threaded through it with the upcoming fixation at the base. If such a step is not necessary, the bar is fixed in its own place.

do it yourself 12 volt angle grinder

How to make an angle grinder powered by a 12 Volt battery from scrap materials.

angle grinder 12 volt do it yourself

How to make a mini angle grinder with your own hands. It happens that in the garage you need to cut or grind something for the car, but there is no “angle grinder” at hand. For such cases, I built a “grinder” from various rubbish, working from 12 volts (from the cigarette lighter). It is also applicable in an apartment if there is a 12-volt power supply unit. At home I use a power supply from an old computer.

Of course, it was possible to assemble the drill, but among my “garbage” there was no special cartridge, but I found this:

DIY 12 volt battery grinder

Let’s start a Bulgarian now, and sell not an ordinary one, but on a battery. The thing is necessary and exciting. Video to view.

Observing the annotations, the angle grinder comes out in 1-2 hours

You can make an angle grinder using this method within a few hours and still get the right tool.

2 volt angle grinder

If you set a goal to use an electronic instrument with a client, you need to recycle its 12 Volt power to 220. So, there is an option to power it from a car, where a constant current with a voltage of 12 Volts flows, by installing a special invector.

The process of connecting an angle grinder to a 12 Volt battery

Low-power invectors should be connected to the cigarette lighter, there are no special requirements. The only aspects are:

  • Use at temperature criteria from 15 to 50 0 С and average humidity.
  • Do not allow devices to operate in direct sunlight.
  • Do not use space under the seats for storage, as the invector will heat up during operation. To cool it down, you need an unobstructed passage of air.

A more powerful invector is recommended to be connected to the battery terminals. With all this, it is forbidden to turn on the ignition or the engine if the invector is installed to a non-removable battery.

Make an angle grinder, of course, from various tools that everyone has nearby. Thanks to the instruction, the work is done by hand in just a couple of hours.

12 volt angle grinder

If you set a goal to use an electronic instrument with a client, you need to recycle its 12 Volt power to 220. Thus, there is an option to power it from a car where a constant current with a voltage of 12 Volts flows, by installing a special invector.

The process of connecting an angle grinder to a 12 Volt battery

Low-power invectors should be connected to the cigarette lighter, there are no special requirements. The only aspects are:

  • Use at temperature criteria from 15 to 50 0 С and average humidity.
  • Do not allow devices to operate in direct sunlight.
  • Do not use space under the seats for storage, as the invector will heat up during operation. To cool it down, you need an unobstructed passage of air.
READ  How to cut an oxygen cylinder angle grinder

A more powerful invector is recommended to be connected to the battery terminals. With all this, it is forbidden to turn on the ignition or the engine if the invector is installed to a non-removable battery.

Make an angle grinder, of course, from various tools that everyone has nearby. Thanks to the instruction, the work is done by hand in just a couple of hours.

DIY 12 Volt Angle Grinder

do-it-yourself angle grinder from a drill and a chainsaw

Quite often in everyday life it is necessary to repurpose working tools. This also applies to the situation when you need to use an angle grinder, but this is not available. Help to be. gasoline. as it is also called an electric saw, what is the duration of the project, what tools are available.

A common and efficient method to get an angle grinder from an electric saw

A homemade 12 volt angle grinder, powered by any portable sufficiently powerful battery, will help here.

To make a tool, take a motor from a tire inflation compressor. Let’s remove the gearbox. Next, we will make an adapter. We use the old case of the angle grinder.

Install the button. Connect the wires to the motor. It remains to finally collect. When assembling, we use clamps. We fasten with standard screws in the front.

For aesthetics, you can use heat shrink. We will cut a corner to demonstrate the capabilities of a homemade 12 V cutter. We use a car battery. We start cutting. Attention! In the video, the master violates safety rules, does not use protective equipment. It is not only inconvenient to work with one hand, but also extremely dangerous.!

Keep the wire as short as possible. Ideally no more than 1.5 meters. The cross section is at least 4 square millimeters. Then you can use a small 12 volt battery. We know that cable losses are very large at DC. It is important that you can do work within arm’s length.

Homemade angle grinder powered by 12 volt battery

The angle grinder is a modern tool used by almost all iron craftsmen. It is used to cut material, sharpen tools, grind parts. But there are situations when there is no 220 V network or it is located far away and there is not enough cable to connect.

A homemade angle grinder powered by 12V will help out, which can be connected to a small battery or to the car’s mains. The advantages of such a tool are quiet operation, which allows you to use it without fear of problems with neighbors.

How to make 12V Cordless Angle Grinder. Easy

The homemade product is driven by an electric motor 775, operating from 12 24 V. It has a cooling fan, the armature is located on the bearings. All this makes the motor a long-liver even with active use.

In addition to the electric motor, prepare: an adapter for an angle grinder; the connector through which the power supply is connected; paint; switch; wires; self-tapping screws; cogs. The body is made of various PVC-parts used for the installation of water supply, sewerage, and electrical networks. From tools they use a hacksaw for metal, glue, a drill, a caliper, a drill, a marker.

For the body (handle), PVC parts are harvested: a piece of pipe; 90 ° connecting corner; adapter for a smaller diameter. The adapter is glued to the corner, then a piece of pipe is glued to its free end. Get a nifty handle.

A protective shield is made, which will protect the worker from sparks, disc fragments. An 11 cm diameter PVC plug is used. In its center, a hole is drilled with a diameter equal to the size of the part protruding from the engine housing (next to the shaft outputs). On the sides of it, two more holes are arranged for fastening screws. Through the latter, the engine is attached to the shield.

Using an angle grinder, cut off a segment (approximately 3.5 cm high) of the protective cover, forming a working area for the disc. In this case, the mounting holes should be parallel to the cut and remain on the part.

Cut off a piece of PVC pipe. Glue it to the outside of the protective cover so that the cut does not interfere with the installation of the motor. In the craft, it will be inside this segment, which, in addition, ensures the connection of the knot with the free end of the corner in the handle.

At the free end of the corner of the handle, closer to the bend, arrange a series of holes in a circle, which will provide heat removal from the running engine. To it, closer to the edge, an additional short handle is vertically glued from a piece of pipe of a smaller diameter.

The surfaces of all plastic parts of the handle, protective shield are painted with spray paint. The color is chosen from those that you like.

The motor is secured with screws from the rear of the protective cover. Insert the latter into the free end of the corner on the handle. connect the parts with screws (better, it allows you to further disassemble the tool), gluing.

The end of the handle is closed with a plug in which the switch is placed, the power connector. Suitable holes are pre-arranged for these parts; installing the connector on the glue. Before installing the plugs, solder the wires from the engine to the connector.

The motor shaft is equipped with an adapter, fixing it with a hex head screw. Fix the disk and try to work.

angle grinder from chainsaw and electric saw

The more common method to make an angle grinder at home is to convert it from a gas or electric saw. Because of the finished fixture

  • Possibility of autonomous work.
  • Highest power.
  • Operating price.

How to make a Mini Cordless Angle Grinder ~ Easy DIY

For an angle grinder, you need to reduce the risk of disc breakage. For these purposes, the saw is equipped with a special protective cover. It is also worth lowering the number of revolutions using the speed reducer.

do it yourself 12 volt angle grinder

How to make an angle grinder powered by a 12 Volt battery from scrap materials.

How to assemble a 12 volt angle grinder

It happens that there is no 220 volt outlet at hand.

Rewinding the stator (angle grinder) of the angle grinder, on the knee. Motor rewinding

I took the time to revive the angle grinder that was given to me for spare parts. At the same time I decided to show

angle grinder from a drill

For such a transformation, the following tools will come in handy at home:

While starting the transformation, you need to make sure that the drill itself will not come in handy in the coming days. In the last article, I told you how to connect and start a 380 volt motor in a 220 volt single-phase electrical network. And later it’s enough to follow the step-by-step annotation:

  • Choose an attachment for your future angle grinder.
  • Take a rod made of steel with a small diameter, do not grind off one of its edges. This action is necessary for the best fit specifically into the nozzle. Also, for the best coupling, you should slightly grind off the places that will come into contact with the petals of the cartridge not of the rod itself.
  • Fix all parts.
  • Frisky is not the usual method of creating an angle grinder
  • There is not a second, more difficult method to achieve the desired result.
  • The chuck is removed from the drill. For an angle grinder, it is not necessary, because there is an option to clean it, lubricate it, do not put it in storage.
  • Choose an attachment for the upcoming tool. It is better that it was a part of strong steel, a lightweight version will be inappropriate here.
  • Rod selection. It needs such a length that its part protrudes outside the drill by 1.8-1.9 cm. Then one of its ends should be grinded off with a rasp, so that in the process a bar comes out, which completely coincides with the nest in the nozzle itself. Before the joint, it is worth smearing its ends with machine oil for the best passage.
  • The installation of the ball bearing is carried out to the area for output. A bar will be threaded through it with the upcoming fixation at the base. If such a step is not necessary, the bar is fixed in its own place.

12 volt angle grinder

  • For the ability to use an electronic instrument at the client, you need to recycle its 12 Volt power to 220.
  • You will learn how to correctly connect 220 volt single-phase electric motors using the example of motors from a washing machine.

Thus, it is natural to power it from a car in which a constant current with a voltage of 12 Volts flows, by installing a special invector.

The process of connecting an angle grinder to a 12 Volt battery

Low-power invectors should be connected to the cigarette lighter, there are no special requirements. The only aspects are:

  • Use at temperature criteria from 15 to 50 0 С not average humidity.
  • Do not allow devices to operate in direct sunlight.
  • Do not use space under the seats for storage, as the invector will heat up during operation. To cool it down, you need an unobstructed passage of air.
READ  How to Chamfer a Pipe Angle Grinder

A more powerful invector is recommended to be connected to the battery terminals. With all this, it is prohibited to turn on the ignition or the engine if the invector produced is made to a non-removable battery.

Make an angle grinder naturally from different tools that everyone has nearby. Thanks to the instruction, the work is done by hand in just 2-3 hours.

Making a mini angle grinder

The most important part is to put the bearing on a slightly processed (using a drill and a file) support from the mat. computer board and press in the cable.

We disassemble the crocodile clip and use a homemade clamp to attach the bearing to it. We fix a piece of cable from the speedometer with plastic clamps.

The electric motor itself, together with the relay, is placed in a can of sealant cut to size (we fill the voids with pieces of rubber). Additionally, we fix it with a bolt that abuts against the motor housing from turning.

The cutting disc is also homemade. We make a protective plastic cover for it.

The electrical circuit is simple: when you press the mini-button, the relay turns on, which in turn closes the power contacts and supplies voltage to the electric motor.

After assembly, we get a new design with an unusual arrangement of the motor. When working, we hold the tool in the same way as a regular “angle grinder“, only now it has become more mobile.

The second option. Self-assembly (2 videos)

If the task is to make a miniature tool with your own hands, then you must initially select an electric drive. As an electric drive, a motor from various devices is suitable. a printer, an old cassette tape recorder or from an ordinary children’s electrified toy.

Depending on the power of the electric motor, you can build a mini angle grinder in two directions. The first direction is the use of a mains power supply. For example, from an old mobile phone. The second direction provides for a completely autonomous model from a motor, which will be powered by batteries or accumulators.

The difference between the two is in the design of the case. In the first case, space is required only for the electric motor, and in the second it will be necessary to install the battery compartment.

It is very convenient to use a piece of PVC pipe for the body. If its diameter is slightly larger than the diameter of the electric motor, then electrical tape can be wound around the motor. You can fix the engine with a glue gun.

As plugs, you can use plugs that are put on PVC pipes during transportation and storage. In the front plug it is necessary to make a hole for the motor shaft, and in the rear plug for the power cable. The power connector and the switch must be fixed to the case.

The ideal option would be to be able to attach a collet to the shaft. This will allow the use of standard burs, drills and custom mini mills and discs. If you cannot install the collet clamp, then you can connect the shaft and the cutting tool using a double contact from the electrical block.

In a similar way, you can make a case for a mini angle grinder with autonomous power supply. Only after installing the engine in it, it is necessary to install the battery pack. The battery wires will be connected via a switch mounted on the case.

In both cases, on mini grinders, you can use both a home-made tool and a standard industrial one. drills and drills.

do-it-yourself 12v angle grinder

An angle grinder in the hands of a master can work wonders. It is used to cut material, sharpen tools, grind parts. But there are situations when there is no 220 V network or it is located far away and there is not enough cable to connect.

A homemade angle grinder powered by 12V will help out, which can be connected to a small battery or to the car’s mains. The advantages of such a tool are quiet operation, which allows you to use it without fear of problems with neighbors.

The home-made drive is a 775 electric motor operating from 12 24 V. It has a cooling fan, the armature is located on the bearings. All this makes the motor a long-liver even with active use.

In addition to the electric motor, prepare: an adapter for an angle grinder; the connector through which the power supply is connected; paint; switch; wires; self-tapping screws; cogs. The body is made of various PVC-parts used for the installation of water supply, sewerage, and electrical networks. From tools they use a hacksaw for metal, glue, a drill, a caliper, a drill, a marker.

For the body (handle), PVC parts are harvested: a piece of pipe; 90 ° connecting corner; adapter for a smaller diameter. The adapter is glued to the corner, then a piece of pipe is glued to its free end. Get a nifty handle.

A protective shield is made, which will protect the worker from sparks, disc fragments. An 11 cm diameter PVC plug is used. In its center, a hole is drilled with a diameter equal to the size of the part protruding from the engine housing (next to the shaft outputs). On the sides of it, two more holes are arranged for fastening screws. Through the latter, the engine is attached to the shield.

Using an angle grinder, cut off a segment (approximately 3.5 cm high) of the protective cover, forming a working area for the disc. In this case, the mounting holes should be parallel to the cut and remain on the part.

Cut off a piece of PVC pipe. Glue it to the outside of the protective cover so that the cut does not interfere with the installation of the motor. In the craft, it will be inside this segment, which, in addition, ensures the connection of the knot with the free end of the corner in the handle.

At the free end of the corner of the handle, closer to the bend, arrange a series of holes in a circle, which will provide heat removal from the running engine. To it, closer to the edge, an additional short handle is vertically glued from a piece of pipe of a smaller diameter.

The surfaces of all plastic parts of the handle, protective shield are painted with spray paint. The color is chosen from those that you like.

The motor is secured with screws from the rear of the protective cover. Insert the latter into the free end of the corner on the handle. connect the parts with screws (better, it allows you to further disassemble the tool), gluing.

The end of the handle is closed with a plug in which the switch is placed, the power connector. Suitable holes are pre-arranged for these parts; installing the connector on the glue. Before installing the plugs, solder the wires from the engine to the connector.

The motor shaft is equipped with an adapter, fixing it with a hex head screw. Fix the disk and try to work.

How to make a mini angle grinder yourself

The need for a miniature tool exists where a person is engaged in the manufacture of souvenirs, models of ships and aircraft, small technical units and parts.

Miniaturization proceeds in two ways. The first option provides for the manufacture of only miniature tools. discs, cutters, etc. The second option provides precisely for the manufacture of grinding tools based on miniature electric motors.

First Option. Using a Drill

The first option has a simpler solution. Let’s say you need to make a miniature grinding wheel that will be installed in a drill or electric screwdriver. For this we can take a broken disk.

On it, using a caliper, draw a circle of the required size. Then, along the drawn circle, we cut out the future miniature disk. In its center we drill a hole into which we insert a bolt with a diameter of 6 mm.

Put on a washer from below and tighten with a nut.

The bolt will be the axis of rotation of the disc. We insert it into the chuck of a drill or electric screwdriver and clamp it. Such a tool can be used to cut materials in hard-to-reach places or small in size. Finished parts can be sanded.

It is not difficult to make a miniature milling cutter for cutting small parts from plastic or wood. To do this, we take an ordinary tin cork from a glass bottle. In the center of it we make a hole for installing the axis. The axis can be the same bolt with a diameter of 6 mm. We align the edges of the cork and cut out the cloves. It is desirable to make minimal markup.

Such a cutter, loaded into a drill or electric screwdriver, is able to easily cut small wooden strips, for example, for modeling. Plastics also lend themselves to this simple tool.

READ  Adjustable Speed ​​Angle Grinder 230 mm

How to convert a 12V angle grinder

If your angle grinder of low power is out of order, then taking this opportunity, it can be converted to a constant supply voltage of 12 V. In some moments it will be an indispensable assistant for you, in the sense that it will work anywhere from a rechargeable battery.

For alteration, you will need a 775 series motor (on Aliexpress. http://ali.pub/3xhgtm). Electric motors of this series are high-speed and very powerful. They operate on direct current, at a voltage of 12, 24 or 36 V, depending on the version.

Converting an angle grinder from 220 V to 12 V

We open the housing of the angle grinder by unscrewing the screws securing the gearbox.

We take out the stator from the case, it is no longer needed.

It will not be superfluous to disassemble the gearbox and lubricate it with new grease.

Then we close it back. Next, we saw off the rotor shaft from the gearbox with a hacksaw for metal.

The impeller that was used for forced cooling of the motor can be removed with nippers

We fix the gearbox and drill the shaft in the center with a drill with a diameter slightly larger than the shaft of the new electric motor.

Now we drill a hole on the side and cut the thread for the screw.

Insert the motor shaft and fix the screws.

We wrap the engine with electrical tape increasing its diameter under the body inside.

We insert into the body tightly. After removing all the brushes from the old motor.

Assembling the tool in reverse order.

Trying to saw off something with a cutting disc.

Of course, the power has slightly changed for the worse, but it is still quite possible to work.

Lubricate the gearbox

Unscrew the screws securing the gearbox cover.

We fill the gearbox housing with a special grease for high-speed gears.

Put the cover back in place and screw it on.

Dismantling the old engine

We unscrew the four screws holding the gearbox to the body of the angle grinder.

We remove the gearbox together with the rotor of the burned out engine.

We unscrew the screws securing the stator of the electric motor.

We take out the stator of the old electric motor, making room for a new one.

Materials for work

To make a 12 volt angle grinder, you will need:

  • an old angle grinder of low power with a burned-out engine;
  • high-speed powerful 12-volt DC motor;
  • screwdrivers, pliers;
  • high speed gear lubricant;
  • saw for metal;
  • vice;
  • electric drill;
  • soldering iron;
  • sword.

Do-it-yourself rework of a 12 volt angle grinder? | Step-by-step instruction

Burned out engine of your favorite small angle grinder? Do not rush to throw it away. Indeed, replacing it with a 12 V DC motor, you will not only bring the tool back to life, but also get a unique opportunity to use it outside the home by connecting it to the car battery.

We attach a new motor to the gearbox

We clamp the rotor of the burned out electric motor in a vice and with a hacksaw for metal we saw off the gearbox from it.

Remove the engine cooling impeller.

How To Make Cordless Angle Grinder with DC 775 Motor

In the center of the shaft coming out of the gearbox, we drill a hole where the shaft of the new electric motor will subsequently be inserted.

Drill a hole in the side of the same shaft, into which the clamping screw will be inserted.

We put the gearbox on the shaft of the new electric motor.

Answers:

Option 1. The resistance of a 10 kOhm resistor is a standard for installing a regulator, the wires in the circuit are connected according to the principle: 1 and 2 for power, 3 and 4 for the load. the current will be distributed correctly over the required poles, the radiator must be installed. to protect against overheating, transistor used by KT 815. this is always suitable. In this case, the constructed circuit will work, the regulator will start working.

Option 2. The resistance of 500 kOhm is too high, the smoothness of sound in operation will be disturbed, or it may not work at all, terminals 1 and 3 are load, 2 and 4 are power supply, a radiator is needed. in the circuit where the minus was, there will be a plus, the transistor is any. indeed, you can use anything. The regulator will not work due to the fact that the circuit is assembled, it will be wrong.

Option 3. Resistance 10kOhm, wires. 1 and 2 for the load, 3 and 4 for power supply, the resistor has a resistance of 2kOhm, transistor KT 815. The device will not be able to work, as it will overheat without a radiator.

Top 5 transistors

Different types of transistors are used for different purposes, and there is a need to choose it.

  • KT 315. Supports NPN structure. Released in 1967 but still in use today. Works in dynamic mode and in key mode. Ideal for low power appliances. suitable for radio components.
  • 2N3055. Best suited for sound mechanisms, amplifiers. Works in dynamic mode. Quietly used for a 12 volt regulator. Conveniently attaches to the radiator. Works at frequencies up to 3 MHz. Although the transistor can only withstand up to 7 amps, it pulls powerful loads.
  • KP501. The manufacturer expected it to be used in telephones, communication mechanisms and radio electronics. Through it, the devices are controlled at minimal cost. Converts signal levels.
  • Irf3205. Suitable for cars, boosts high frequency inverters. Supports a significant level of current.
  • KT 815. Bipolar. Has an NPN structure. Works with low frequency amplifiers. Consists of a plastic body. Suitable for impulse devices. It is often used in generator circuits. The transistor was made a long time ago, it works to this day. There is even a chance that he is in an ordinary house where old appliances are located, you just need to disassemble them and see if there is.

important terms.

Voltage regulator. a device that allows the output to adjust the voltage to the device for which it is needed.

Scheme for the regulator. a drawing depicting the connection of parts of the device into one whole.

Automotive generator. a device that uses a stabilizer that converts crankshaft energy into electrical energy.

Using 2 transistors. How to assemble a current stabilizer.

A 1k resistor is equal to a current regulator for a 10 ohm load. The main condition was that the supply voltage was stabilized. The current depends on the voltage according to Ohm’s law. The load resistance is much less than the current resistance of the limiting resistor.

Variable resistor PPB-3V. 47 Ohm. Consumption. 53 milliamperes.

Transistor kt 815, installed on the radiator, the base current of this transistor is set by a resistor of 4 and 7 kOhm.

How to connect 5 parts of a 12 volt regulator.

This is a 10kΩ variable resistor. Changes the strength of the current or voltages in the electrical circuit, increases the resistance. It is he who regulates the voltage.

Radiator. Needed in order to cool devices in case of overheating.

1 kΩ resistor Reduces the load from the main resistor.

Transistor. The device increases the force of vibrations. In the regulator, it is needed to obtain high-frequency electrical vibrations.

2 wiring. Necessary for electric current to flow through them.

We take a transistor and a resistor. Both have 3 branches.

Two operations are carried out:

  • The left end of the transistor (we do it with the aluminum part down) is connected to the end, which is in the middle of the resistor.
  • And we connect the branch of the middle of the transistor with the right one at the resistor. They need to be soldered to each other.

The first wire must be soldered with what happened in 2 operations.

The second one needs to be soldered to the remaining end of the transistor.

We fasten the connected mechanism to the radiator.

Solder the 1kOhm resistor to the extreme legs of the variable resistor and transistor.

Dinistor and 4 types of conductivity.

This device is called a trigger diode. Low power. There are no electrodes in his insides.

The dynistor opens when the voltage rises. The rate of voltage rise is determined by the capacitor and resistors. All adjustments are made through it. Operates on direct and alternating current. You don’t have to buy it, it is in energy-saving lamps and is easy to get from there.

It is not often used in circuits, but in order not to spend money on diodes, a dinistor is used.

It contains 4 types: P N P N. This is the electrical conductivity itself. An electron-hole transition is formed between 2 adjacent regions. In the dinistre there are 3 such transitions.

We connect the capacitor. It starts charging with 1 resistor, the voltage is almost equal to that in the network. When the voltage in the capacitor reaches the level of the dinistor, it will turn on. The device starts to work. Do not forget about the radiator, otherwise everything will overheat.