This diagram from a 1967 documentation shows how to switch high voltage neon lamps with 5V TTL outputs. The circuit can be adapted to function as a shield.
This amplifier is specifically designed for portable radio and recorders with a 4 ohms load....
The Texas Instruments TLV743P integrated circuit consists of a low voltage drop (LDO) voltage...
This very complex circuit in terms of the number of transistors was found in Radio Electronics from March...