Stereo FM Transmitter (CB8459E)

This circuit was found in a 90s Radio Electronics. The FM encoder or multiplexer is an uncommon component today.

RGB to NTSC Converter (CB26154E)
This circuit was found in the 1991 Electronics Experimenters handbook. It can be used to display RGB...
ADS127L01 Delta Sigma ADC Broadband (COM056E)
August 2016 - It can be obtained from Mouser Electronics thenew broadband ADCs ADS127L01 from...
Germanium Transistors Astable (CB14769E)
This circuit is from Mullard's transistor reference manual from 1960. The circuit will also work...