With this circuit it is possible to obtain a higher voltage from a zener diode. The circuit is from a 1970’s EEE. The device used as a constant current source is uncommon today.
We found this circuit in an old American publication. It can be mounted with TIC106 type SCRs and...
If the transistor is PNP, keep a good NPN in place. If it is NPN, keep a good one in the...
This small source is suitable for low consumption equipment that uses batteries. The circuit is...