This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit uses components from the era and no information about the transformer is given.
The gain of this circuit is given by the value of R1 that depends on the current in the...
This hydromassage circuit was found in a 1967 General Electric publication. The SCR is according to the...
Published in 1988 in Hands-On Electronics, this circuit converts the 12 V of a battery into 120 V...