This circuit, which presents a certain danger and should be used with caution, was found in the Electronics Experimenter Handbook magazine.
This configuration using the four transconductance operational amplifiers of an LM3900 was found...
This circuit was obtained in a 1979 publication, but it can be assembled with the BD135 instead of the...
We found this circuit for immobilizing a car's ignition system in the December 1976 Radio...