This circuit provides voltages and a 1 kHz signal for measurement bridges. The circuit is from Electronics Now magazine, September 1995.
This simple circuit was found in Popular Electronics. It can be built with any JFET. Galvanometers from...
This instrument was obtained in a documentation for radio amateurs of 1976. The circuit measures...
In the fist circuit the alarm triggers on when any sensor is CUT. In the second circuit the alarm...