Suggested by a 1968 documentation, this circuit limits the current of a regulator and can be adapted to other currents. The transistors are from the era.
This symmetrical power source for currents up to 1 A was found in a 1986 documentation, serving...
The two previous circuits show the INA185 a current sensing amplifier in basic applications. This...
This circuit, which can also be used with flashing LEDs as long as they have in parallel a charge...