Schematic diagram of an acoustic sensor (sound relay) on two microcircuits
Diagram of an acoustic sensor (sound relay) on CD4069, CD4020 microcircuits
This sensor can be used in an automatic lighting control system to turn on its signal.
Optical and photo sensors. Types and principles of operation
Name and terminology in relation to optical sensors As can be seen immediately from the name, in these
Circuit of a powerful RF self-oscillator based on a MOSFET transistor
Analog measuring devices
Preface A radio signal, once generated, is carried into the depths of the Universe at the speed of light... This phrase, read
How to branch an Internet cable?
Business ideas. Delivery and sales. Diseases. Cataclysms. Lending. Taxation
Preparation If you decide to hide the socket in the wall, then you need to install a socket box in it.
Refrigerator start relay: design and repair
Connection, repair and replacement of the start relay of Atlant refrigerators
The refrigerator is an example of a household appliance that no family can do without today. Like
Broken wire
How to repair a headphone plug yourself
Quite often, the wire leading to the plug on the headset breaks - according to experts,
Replacing fuses
How to make a fuse with your own hands?
Repairing a tubular fuse, selecting the wire diameter In modern electrical appliances, fuses are found everywhere, or if
Car battery charge indicator
12 volt battery charge control circuit
Today the article will be about the process of assembling a simple battery charge level indicator, but with more
The difference between a switching power supply and a transformer one
Operating principle of a UPS The main function of any power supply, including a switching power supply, is
How does a ph meter work?
pH meter device and principle of operation
On what principle does a ph meter work? Instruments for measuring the acidity/alkalinity of media - ph meters,
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