This 50 Hz rejector or notch filter was found in a 1975 documentation. Other frequencies can be obtained by changing components. The filter uses a Wien network and must use a symmetrical power supply.
The shunt type regulators are connected in parallel with the load, deflecting the current to...
Using the LM317 (or LM350), this circuit is based on precision regulatory components such as those...
This solar cell powered circuit generates a standard 100 kHz signal. The circuit is from a 1960...