This few kilovolt gas laser power supply was found in the June 1986 issue of Radio Electronics magazine. No transformer data was provided.
The original document is from Philiups, but now available from NXP (www.nxp.com), which is the...
If the battery is good, the LED flashes. This simple tester uses an LM3909 integrated circuit. We found...
This negative voltage source was found in a Popular Electronics from the 90's. The transformer has 120V...