This simple source with zener regulation is ideal for experimental projects with operational amplifiers. Other voltages can be obtained by changing the zeners and the transformer.
We found this circuit in an American documentation from the 90's. The circuit can be assembled with a...
This circuit generates a 5.3 kHz linear ramp with the indicated components. The 7555 is the CMOS...
This circuit is from the Motorola Linear Databook of 1990. The protection components are...