This circuit was originally suggested by General Electric in 1966 documentation to power decorative high voltage neon lamps. The transformer is 7,500 V for a current of 4 mA.
This preamplifier for magnetic cartridges was found in the February 1990 issue of Radio...
This circuit is from an 80's documentation, applying to ordinary comparators. The source does not...
When the AC Power line fails, the transistors in this circuit are biased to conduce the current to...