Found in Radio Electronics magazine, May 1987. It triggers a xenon lamp from an inductive sensor. The circuit requires 200 to 400 V DC to operate.
This filter was obtained from a Linear Technology manual from the 1990s. The power supply must be...
Found in a 90s Popular Electronics, this circuit is intended for amplifying analog video signals....
Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then...