This circuit was found in documentation from the 90s. The operational amplifier admits an equivalent. The circuit has frequency ranges up to 5kHz determined by R1.
This circuit was found in a 1968s European documentation. It is a current regulator using...
We found this circuit in the 2005 Linear Technology component manual. The circuit can be used as a...
Placed in the vicinity of a telegraphic transmitter (CW), this circuit produces an audible signal on...