This circuit is from a 1965 General Electric manual. It uses components from the time that admit equivalents. The SCR can be the TIC106 and the LDR of any type.
Found in a RCA publication from the 1970s, this circuit is intended for the production of pulse...
In this circuit, the LED Will blink in a presence of na áudio signal in the input. Gain is...
This oscillator version is from an RCA documentation from the 1970s. Transistors support modern...