This circuit was suggested by Signetics in documentation from the 90s. The circuit uses components from that time, serving as a reference.
This circuit was found in a 1977 Radio Handbook. The ports used are CMOS like 4001 and the...
With this circuit it is possible to excite direct current relays from an alternating signal,...
We found this circuit in documentation from the 1950s. The circuit basically applies to germanium...