Electronics. Page 19

A small electric stove, powered by diesel glow plugs, will help quickly heat water in nature during a camping trip or fishing. Using this device you can fry eggs or cook a small portion of soup.

An ordinary car generator can be converted into a BLDC motor with sufficient power to propel an electric scooter. A pair of 12V car batteries is used as a power source for such a drive. So the cost

This circuit is characterized by a clear switching threshold when the set voltage level is reached. This indicator is universal, has a potentiometer for setting a given value and can work with any battery in the range of 3-16 V.

You can make a flashing light with the effect of “Running Lights” very simply without transistors, microcircuits and a board in a couple of tens of minutes. A very simple and uncomplicated scheme.Does not require configuration and works immediately after switching on. Alternatively, you can use

Away from cities where the power supply is unstable or non-existent, a small power generator is often needed. We'll tell you how to assemble it yourself. Such a device, of course, will be inferior to generators in all respects,

Making a powerful, blinding LED lamp for large and medium-sized living spaces with your own hands is very simple. All this became possible thanks to the appearance on the radio electronics market of powerful LED matrices with drivers built into them. Such a matrix

When buying this or that electronic device, we often opt for devices with a built-in rechargeable battery. Such a product has more advantages than the same one, but running on disposable batteries. Firstly, it is convenient -

It is inconvenient to heat small outbuildings: it makes no sense to install a full-scale system, and installing a standard heating device is ineffective. But you can make a very simple design with your own hands, with high efficiency.

An instant heating soldering iron is suitable for working with small parts and alloys. When using this device, time and energy costs for soldering are saved.The soldering iron is ready for use immediately after switching on. The flexible tip can be bent as much as possible

If you suddenly need a loud siren for your homemade alarm system, then it can be very easily made from any available dynamic head. You don’t need any circuits or transistors, just the speaker itself, a pair of wires,

Using this instruction, you can change the output voltage of almost any switching power supply, not just the one from a laptop. They all almost work on the same principle and the scheme is not very different. For example, if you have

Lithium-ion batteries with a voltage of 3.7 V are not used anywhere now. Do-it-yourselfers especially often use them wherever possible. Such batteries are good for everyone, but have a number of disadvantages, one of which is that if

To convert a bicycle into an electric bicycle, special kits with a motor-wheel are sold. This is a decent budget solution, but it does not allow you to achieve normal movement speed. The wheel motor on a flat road allows you to accelerate to a maximum of

LEDs blinking in time with the turn signals, arranged in the shape of an arrow in the rear view mirror of a car or motorcycle, look very impressive. It’s not difficult to make such repeaters for yourself.

You probably have an old stereo or other equipment lying around in your closet that contains a step-down transformer. From it you can very simply and easily assemble a soldering iron with instant heating. The convenience of this soldering iron is that

Many people enjoy fishing and boat trips on the water. The hobby for this active outdoor recreation is popular, especially if you have at least a small plastic boat with 1-2 seats. Budget versions of such boats are produced without a motor, so

This is a very simple level indicator that is incredibly easy to make and does not contain transistors or microcircuits. It was assembled in 10 minutes using hinged mounting and works great. The device connects directly to the speaker and displays the sound level.

An induction heater is a device that works using the magnetic properties of metals. Making it yourself is very simple. The device will be useful not only for studying the basics of electrical engineering, but also for practical purposes, for example,

Many people probably have unwanted and used watches with a quartz movement powered by a AA battery lying around at home. We propose to assemble from them a useful homemade lighting effects that will resemble a police strobe light.

The motor wheel and other parts from an old hoverboard will be the optimal basis for making a wind generator. Plywood is used as the tail, and the blades are cut from PVC pipe. Such a windmill is capable of generating power up to 150 W at

If you have a broken car radio, don't rush to throw it away. In skillful hands, it can find a new life and serve for a long time. Using the example of a faulty old “Pioneer 1091” type, we will tell you how to “pump” it.

Sometimes, to convert energy from alternative sources, a homemade generator with certain parameters is required. It would seem almost impossible to do it yourself, but if you really look at things, then there is nothing particularly difficult here. Now

Agree, there are times when you need to use a soldering iron, but you don’t have one at hand. It doesn’t matter for what: for desoldering radio components or wires, the need can be anything. To get out of this situation, you can make a soldering iron

Sometimes electrical or radio installation requires a perfectly straight piece of copper wire. To make coils, connectors, shunts or other elements from it. There are no problems with thin-section wire, but how to straighten wire 1-4 mm thick?