This circuit was found in Radio Electronics from the 90s. It converts capacitance into frequency in order to obtain a proportional voltage that can be measured in a common multimeter.
This circuit provides a linear attenuation of a signal up to 100 dB. The circuit operates with...
This high impedance circuit for low voltage sensors was found in a 1980s documentation. The JFETs...
We found this circuit in a 1989 publication. Its purpose is to produce noise in the VHF or UHF...