In today’s electronic equipment is widely used touch control. Option sensor available for beginners repetition hams, offers Czech magazine “Amaterske Radio”. If you touch the plate, induced in the human body room electrical AC voltage increases two-stage ULF transistors V1, V2, and then straightens diode VЗ. Direct voltage of about 4 V, which appears at the sensor output, is the command signal.
The device used any low-power silicon transistors, for example, КТ342, KT315 with any alphabetic index. Diode any silicon (Д220, Д219). Capacitor — KBG-And or BMT. Touch plate — cut foil fiberglass with a size of 20X20 mm.
Recommend to read
CUT THE TILE
When carrying out cladding work, tiles is often a need to cut from it a narrow strip. To do this, of course, can and glass cutter, but it is difficult, and there is no guarantee that the...
SOFT SHEATH
To protect the cutting edges of tools from accidental damage during storage and transportation will help simple cozies. They can produce in just a few seconds. Take a cut from leather,...
