This circuit was found in a 1977 timer cookbook. The circuit can generate signals with up to 99% active cycle. The FET can be BF245 or MPF102 and the basic frequency given by R1, R2 and C1.
This circuit was found in the Linear Technology Applications of 1997. The circuit uses common...
This circuit was obtained from a 1967 General Electric manual. The circuit makes use of absolutely...
With this circuit, power cables can be detected by simply approaching PP. PP is an antenna or...