Found in an Electronic Design from the 90's, this circuit measures the equivalent resistance in series of a resistor. The circuit operates at 50 kHz producing a rectangular signal.
This circuit uses a large surface diode to detect radiation (alpha and beta particles, in addition to...
This preamplifier for the phonographic capsule was obtained in an Argentine publication from 1973....
This circuit is from a 1993 publication and can be implemented with any optical isolator that has...