Electronics

The simplest converter 12 V to 220 V

We supply power to the circuit. Through a normally closed contact, the current will flow through the coil winding and through the secondary winding of the transformer. The relay will break...

3 years ago

Test. How to check the battery? How to choose the best?

Which of them will show itself better during operation? Probably the one that costs more. And if we compare one price ...

3 years ago

Vintage appliances. What were they

Photo of old appliances from the beginning and middle of the 20th century.

3 years ago

Living and dead water Homemade device

Description of the home-made scheme of the device for the preparation of living and dead water. Photo and video.

3 years ago

How to find out the real capacity of the battery?

The capacity that battery manufacturers write is impressive: 6000mAh, 10000mAh, 20000mAh ... In fact, the real capacity of such batteries does not exceed 3500mAh. And this…

3 years ago

How to make a DVB-T2 digital antenna

To make an antenna for receiving digital T2 format, you can use the proposed scheme. Surely many readers have already made a similar design and ...

3 years ago

How to make a night vision device with your own hands

If you really need a night vision device, a simple modification is not necessary to spend a lot of money on a factory one. If you…

3 years ago

Test of circuit breakers with a current of 1.45 of the nominal. Who is better?

All of us, when buying any product, are interested in how real parameters correspond to the declared characteristics. This is especially important when we choose devices…

3 years ago

Energy saving device. Myth or reality?

To be honest, after such information processing, the hand reached for the phone to place an order. After all, the number of devices is limited! Suddenly I can’t!…

3 years ago

How to charge a battery without a charger. Two schemes.

If we take a light bulb with a power of 100 W and turn it on without a battery, we will record a current of 0.45A. In consecutive...

3 years ago

Heat-shrink tubing. Installation subtleties.

It would seem ... heat shrink tubing for insulating cable / wire connections is no longer something unusual. Someone who, but electricians ...

3 years ago

Car charger from a computer power supply

If you have an unused (but working) computer power supply, then you are almost the owner of a great charger for ...

3 years ago

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