This is a traditional 741 configuration with gain close to 100. We found it in the December 1972 Radio Electronics magazine. The power source must be dual.
This circuit behaves like a capacitor whose value is C1 multiplied by the relationship between R1 and...
This circuit of an old 1968 magazine aims to synchronize a slide projector with a recording, but...
This switching power supply was found in an Electronic Design from the 90s. The components are...