Indicated for powering circuits with operational amplifiers, this source was found in Popular Electronics. The output voltage depends on the transformer used, as well as the current.
Found in English documentation, this circuit uses a thermistor as a sensor. The trigger point is...
The circuit is from the 1990 Motorola Linear Databook. Equivalent operations can be used and what...
We find this circuit in an old documentation, but it can be made using modern transistors. The circuit...