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
IN FLIGHT — “MAPLE-7”
Simple radio-controlled model aircraft. Do note that this article is designed for those who prefer to build RC models are not alone, and together with two or three associates. For such a...
EXAM FOR HOME
On their land the owner had built a two-storey box "canadian" house on the tape base. Area, nearby, has long been on sale. Finally she got the owner who invited the surveyor to the...
