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
WHEN WE RAN OUT OF SHAMPOO
You have repeatedly placed the tips where can I find the use of plastic containers of shampoo. I don't throw it away. Those that phobophile diameter, use as holders for rolls of paper,...
ALMOST BABBIT
There is an element of design, which can be found probably in any moving models. It is the bearing. Often a pair of "shaft — hole" presented in the form of passing through the wall of...
