This PLL with operational amplifiers was found in 1969 documentation. The configuration can be adapted to use modern components. The circuit has a gain of 15 V / V and can operate with 10 kHz signals.
This simple PWM control was found in American documentation. We can use any power transistor...
The sophisticated white noise generator we present uses four 741 operational amplifiers. The...
The sampling and retention circuits are used in analog to digital converters and in some other...