High Voltage Regulator Using Ic 723 Circuit Diagram. It can be used as both positive and negative voltage regulator. Unregulated dc supply voltage at the input between 9 5v 40v.
The load must be able to drain at least the supply current of the 723 circuit without exhibiting a voltage higher than the desired output voltage. Positive high voltage high current regulator. By giving 9v input power supply we will be able to adjust the regulated supply from 4v to 8v by using the potentiometer in the circuit.
The functional diagram of the voltage regulator is shown below.
It consists of a voltage reference source pin 6 an error amplifier with its inverting input on pin 4 and non inverting input on pin 5 a series pass transistor pins 10 and 11 and a current limiting transistor on pins 2 and 3. For inconsistent voltage regulation an lm317 ic voltage regulator is used which we have discussed in the previous article. A constant current source a zener diode and a reference amplifier producing a constant voltage of about 7 volts at vref end. Referring to the above block diagram of the internal circuitry of the ic 723 we can see that the device is internally configured with a highly stable reference voltage at 7 v created through advanced circuitry using op amp buffer amplifier and transistor current limiting stages.
