We found this circuit in an old American publication from the 1980s. Transistors can be general-purpose types like the BC548, and the tuning frequency is given by the L and C components.
Found in a 90's EDN this circuit can be used as a shield. The transistor is a general-purpose type and the...
July 2017 - The new Texas Instruments ISO772x digital isolators with a speed of up to 100 Mbps and a...
This high voltage source circuit was found in an old American publication. It uses a voltage...