Activation shield (CB6947E)

Found in an 80's Elektor, this circuit can control loads up to 750 mA with the BD139 and 100 mA with the used transistor.

Mouser First to Stock Analog Devices AD7177-2 32-bit ADC
May 6, 2015 - Mouser Electronics, Inc., the global authorized distributor with the newest...
One Digit Counting Module (CB785E)
This TTL module can be used in counter and many of them can be cascaded to counts up to 99, 999,...
Refrigerator Alar (CB1351E )
Placed inside the refrigerator, this circuit triggers an oscillator when the part is opened...