This circuit was found in Motorola's Linear Interface ICs of 1993. The integrated circuit used is not common and the load current depends on the Triac.
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. We can...
This very common high resistance input voltmeter configuration was obtained in a 1993...
Found in American documentation from the 90s, this circuit can be applied to other operational ones. We...