With this circuit found in an American documentation from 1969 it is possible to vary the selectivity (Q factor) of a tuned circuit. The operational is from that time.
The selected circuit was found in the Texas Instruments optoelectronics manual. RC and C1...
The operating range of this circuit ranges from 0.5 to 2 MHz and its gain is 11dB. Transistors can be of...
This digital buffer was found in the November 1993 issue of Electronics Now. The power supply...