500 kHz XTAL Oscillator 7400 (CB22425E)

The frequency of this clock oscillator is given by the crystal. The trimmer sets the ideal starting point for oscillations.

Low Voltage Indicator (CB14979E)
In this circuit the LED lights up when the voltage drops below the value set in the trimpot. The...
4 to 20 mA interface (CB21054E)
This circuit was obtained from a Linear Technology manual from the 90's. The integrated circuits are...
MOSFET power stage (CB22366E)
Found in a 1995 documentation, this circuit is an alternative output to the previous circuits. The MOSFETs...