This is the typical audio amplifier for a 1967 television. We found it in a magazine from the time. Note the use of the output transformer and the high supply voltage. The circuit is an RCA CTC21.
This power supply can supply symmetrical voltages of 5, 6, 9 and 12 V according to the xx of the...
We found this circuit with SCRs and unijunction in a Radio Electronics magazine from June 1969. The...
This timer triggers high-powered loads powered by the power grid. Times are given by C1 and the...