This circuit was found in a 1967 EEE. The transistors are from the time and can be tested equivalent.
Found in an Electronics Now from the 1980s, this circuit isolates a car's accessories from the...
Based on an integrated LM3914 Bargraph circuit. this design causes voltage variations between 0...
This circuit generates pulses to trigger power controls with SCRs and Triacs. We found it in a...