Overvoltage Indicator (CB22007E)

Using a CA3130 operational amplifier, this circuit drives an LED when the voltage exceeds the value set in VR1.

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...