Found in a 1964 Electronic Design, this circuit generates 1 A pulses with durations from 100 us to 10 ms. The circuit makes use of transistors of the time.
This basic op amp filter configuration was found in July 1975 Radio Electronics magazine. The...
This circuit is from an Italian magazine Radio Elettronica of January 1977. The circuit shows how...
This power source was found in a 1968 Electronics World. The transistors are from that time. The...