Suggested by Mullard in an old documentation, this circuit is based on a common phototransistor and on transistors that may be the modern BC548.
This circuit makes use of an unusual component which is a large surface diode that can be used to...
This circuit for voltages up to about 20 V was found in a 90s Popular Electronics. The LED can be...
This circuit is both simulation of the operation of a diode bridge and a test circuit for this...