Found in a 1966 publication, this circuit is a simple version of a field strength meter. The diode is a general-purpose germanium type.
This circuit beeps when the sensor is triggered by the opening of the freezer door or other...
The circuit shown in the figure has an output voltage rise time of 0.22 ms and an input time...
This circuit was found in the power semiconductor manual of the 1980s ON Semiconductor. The...