Constant current source (CB20484E)

This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The transistor admits equivalent.

Multiple Bench Power Supply (CB17989E)
This power supply, found in 2002 documentation, uses fixed 1 A regulators for the power output. The...
Infrared Transmitter (CB20337E)
This infrared emitter (pulsating) can be used with several other alarm and remote-control circuits on...
1 MHz Oscillator (CB13960E)
The circuit output shown is compatible with CMOS technology. The transistor is 2N2222 and the...