We found this circuit in a 1987 documentation. It is a multi-tester with neon lamp and LEDs operating with both low continuous voltage and high alternating voltage.
Found in Maxim's documentation, this high frequency circuit uses period components. The graph...
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...
This 90s Motorola circuit from, has current limiting foldback. The power transistor is from the...