Stereo FM Transmitter (CB8459E)

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

Flashlight Remote Control (CB17362E)
With a light pulse on the Q1 sensor the circuit turns on and locks. To switch off, a light pulse...
B L072Z LRWAN1 LoRaWAN ™ Discovery Board
March 2017 - STMicrocoelectronics' new LoRaWan B-L072Z-LRWAN1 STM32 development board can now be...
AD Converter Comparator (CB20160E)
This circuit is from the manual of the components used, from the 80s. The circuit is valid for...