This circuit can be adjusted between 0.2 and 2 V to trigger with chosen voltages comparing them with the input voltages. We found it in a 1967 documentation.
This low-current control circuit has a lamp as a load, but can have other types of devices, such...
The varactor or varicap diode tunes the signal for listening to SSB signals on a common receiver. The...
This power supply is not protected from shorts in the output. Output voltage is given by the...