Overvoltage Indicator (CB22007E)

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

Divider by N with the 4017 (2) (CB12131E)
With this circuit it is possible to divide the frequency of a rectangular signal by values between 2...
Precision Hysteresis Alarm (CB26242E)
This circuit was obtained from the Encyclopedia of Electronic Circuits volume 5 of 1995. The...
High Voltage Regulator (CB19513E)
This circuit can supply output voltages from 50 to 250 V from an input voltage of 300 V. The...