This simple 1-transistor audio preamplifier appeared in the June 1968 Radio Electronics magazine. The transistor is a general-purpose type of the time. The gain is 14 dB.
This DC-DC converter was found in old RCA documentation. The circuit operates at 15 kHz. The...
Found in a 1967 documentation, this infrared amplifier is intended for use in a Nipkow disc camera...
This circuit provides a 1 Hz signal given by the capacitor, which can be changed. The gate is TTL...