LM3900 Rectangular Oscillator (CB25179E)

This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1 and can be changed.

Non-inverting amplifier (CB9018E)
Found in documentation from the 70s, this circuit uses an operational one from that time. It goes for...
IR Remote Control Transmitter (CB25784E)
This old 4-channel circuit was found in the December 1994 Electronics Now magazine. The circuit uses...
Transformerless Sensitive Phase Detector (CB8496E)
Found in a 1969 documentation, this circuit for the 20 MHz band does not use a transformer. The circuit is...