In 1892, Nikola Tesla managed to obtain a patent for an invention where the transmission of energy was by a single wire.The whole point is that two wires are usually…
With the help of this simple USB tester, we will be able to check the usb socket of the computer for operability. This is necessary after repairing the socket, especially…
Transistor 2sc3198,the inscription C3198 on the case.This is a silicon npn transistor manufactured using epitaxial-planar technology, a fairly popular foreign transistor. …
Somewhere in the early 60s, one device was patented in the USA, which is a radio transmitter that does not require the usual power source.And it feeds on the energy…
Using this simple and simple device called a magnetostrictive emitter, you can conduct various experiments with ultrasound: make a low-power ultrasonic engraver, spray water, etc. You can learn these experiments…
A rather unusual detector radio can be assembled on a 6x2p radio tube.With this radio receiver, it is possible to receive signals from radio stations with amplitude modulation on long,…
With this simple radio microphone, you can transmit sound from the microphone to a distance of 100-150 meters and receive a signal to a radio receiver with an FM band.This…
With this simple amplitude modulated transmitter for long waves, you can broadcast your transmissions over a short distance.The hurdy-gurdy operates at a frequency of approximately 160-180 kHz, which falls into…
During the Second World War, soldiers in Europe used the so-called "trench radio".The radio received this name because of its simplicity of manufacture and soldiers were forbidden to use radios…
This type of lamps is one of the most expensive, but also more durable and safe (it should be, but like others fail), these are 220 Volt LED lamps with…
What was the very first homemade radio receiver that an amateur radio operator had a few decades ago? That's right-detector.There is no simpler radio receiver than this, just one diode,…
The SL6310 chip is a powerful operational amplifier on which a low-frequency amplifier with an output power of 500 mW can be assembled.A microchip is made in a surface-mounted housing…
The 6zh1p radio tube is a high-frequency pentode and such a tube was used earlier in televisions and radios. In amateur radio circuits, it was used as a master oscillator…
Silicon, high-voltage, mesa-planar powerful transistor kt838 npn structures were used mainly for horizontal scanning of TVs and also in switching power supplies. and released. Let's look at the main characteristics…
In one of my articles(https://electronics83.com/index.php/how-to-make-a-magnetostrictive-emitter-and-conduct-experiments-with-ultrasound/) , I told you how to make an ultrasonic magnetostrictive emitter myself and conducted several experiments with it. Based on this emitter, you can assemble…
The SAA4849ps chip is a video processor.It was used in old televisions on a kinescope. This is the chip on the TV board.Quartz resonator at 48 MHz,memory chip 24c08w6. The…
You can see the light paper or el-panel (electroluminescent panel) in electronic devices such as old mobile phones, car radios, watches and other equipment, where it serves as a backlight…
High-voltage, low-frequency n-p-n transistor 3dd5023 with a resistor between the base-emitter resistance of 50 ohms and a damping diode between the collector and the emitter.Such a transistor can be found…
TV processor TDA11106H1.Such a chip is used in televisions on an Elenberg 2109 type kinescopeHere is a diagram of a TV with this processor.The quartz resonator in the TV was…
The most popular Soviet low-power silicon n-p-n transistor, which is probably known to every amateur radio operator and which can be found in most old consumer electronics, is the KT315…