This sensitive two-transistor circuit was found in the June 1965 Radio Electronics magazine. The circuit has low drift and uses an analog instrument. The input resistance is high.
In reality, it is an audio oscillator that is triggered by a structure that forms a bell-shaped sensor....
The maximum current of this Motorola LDO is 1 A. The formula next to the diagram makes it possible to...
This circuit uses components that are no longer easily found. The circuit is from a 1988...