Constant current source (CB20484E)

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

600mA DC-DC Converter (CB1243E)
The circuit shown in the figure is suggested by Intersil (www.intersil.com) and makes use of the...
12 V x 3.5 A Power Supply (CB1215E)
The diagram of this source appeared in a 1982 American publication, drawing attention to its...
75 V with 10 mA Voltage Regulator (CB820E)
This high-voltage regulator uses only two components. The resistor is a wound wire type with 1 W...