Schmitt Trigger 7400 (CB22419E)

This low hysteresis circuit was obtained from old documentation. The circuit must be powered by a voltage of 5 V.

AC and DC High Current Meter (CB4463E)
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
Power grid powered metronome (CB7289E)
This circuit from an old documentation includes the power supply for the 117 V power grid. It can be...
MOSFET 10-minute timer (CB20364E)
Although MOSFETs of the type indicated are not very easy to obtain, one can have the circuit as a...