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.
In the figure we have a way of using a solar cell as a source for circuits with tunnel diodes. The solar...
This equalizer was found in the May 1978 issue of Radio Electronics magazine. The component values...
This circuit for high-impedance magnetic headphones was suggested as an experimental amplifier for hearing...