Active with the output at the high level, this oscillator was found in November 1984 Radio Electronics magazine. The supply can be between 3 and 12 V and the output signal is rectangular.
In the figure we have the way to obtain an adjustable 1 to 10 mAconstant current source. The...
We found this circuit in an old General Electric documentation. In fact, PUTs are not common...
This alarm uses several sensors that directly trigger a sensitive relay. A larger relay can be...