5874E)
This circuit uses an optocoupler to switch a load on the power grid. The circuit is from Electronics Now magazine, July 1995. The CA3059 is not common today.
This sensor circuit for currents of the order of nanoamperes was found in an American...
This circuit was obtained from a 1964 magazine and has some interesting features such as the input...
Suggested by a 90’s Radio Electronics, this circuit automatically activates the recording switch of an...