Found in a 1990s Motorola documentation, this high voltage circuit uses a PUT that is not a common component today. The maximum power is 50 W.
This circuit of a 1978 American publication monitors a telephone line by triggering a relay. The...
This interesting FET-tester circuit was obtained from an old American documentation. The bipolar...
This old VHF TV booster that also serves FM was found in Radio Electronics magazine from April...