This filter, with a cut-off frequency of approximately 1 kHz, has a high Q and employs two operational ones. The power supply must be symmetrical.
This 90's Electronic Design circuit converts the period of a signal into a frequency. The...
This circuit consists of an improved version of the CIR5892, using two transistors and adjusting the...
The figure shows how to vary the output voltage of a 7812 regulator between 12 V and 2 V less than...