This countdown electromagnetic ring launcher was found in an Electronic Hobbyst Handbook from 1993. The components can be difficult to obtain. Details of the launch coil were not given.
This circuit is from the Philips integrated circuits manual of 1990. It is intended for magnetic...
The circuit shown in the figure presents a 18 dB attenuation for frequencies below the cut. The...
This sensitive circuit was found in a Texas Instruments optoelectronics manual. The transistors can be...