This circuit was found in General Electric documentation from 1964. It makes use of a PUT, called the PNPN planar key at the time. The circuit has two supply voltages.
We describe a simple wiretapping system that does not require any connection to the line. To...
This filter with a Q factor of 50 was found in the Linear Applications Handbook by National...
A double relay reed is used to obtain the latched drive in this 1980 configuration. The circuit can...