Stereo FM Transmitter (CB8459E)

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

Simple Stethoscope (CB18347E)
This stethoscope or amplifier for hearing aid using a crystal headset and microphone was found in a...
ERB RD RE Series and RG Microcomputer Fuses
March 2017 - The new ERB-RD, ERB-RE and ERB-RG fuses from Panasonic's Micro Chip Fuses can now be...
Temperature to Pulse Width Converter (CB1487E)
This circuit was obtained in a 1977 technical documentation. The sensor is a thermistor from 10k...