This circuit from March 1984 Radio Electronics is intended to allow the use of an oscilloscope to measure capacitance. The circuit uses common integrated circuits.
This circuit converts BCD inputs to analog voltages. The operational amplifier must be powered...
This circuit is suitable for the calibration of old analog oscilloscopes. It was found in...
This is the circuit of a hearing aid amplifier manufactured by Sony in the 1960s. The circuit was...