Introduction
This circuit is used to constant the current.In this circuit aressistance is used to control the voltage and the zener diode is used to remains contant the amount of current.the voltmeter is used to show the readings of voltage.
Explanation
In this circuit a zener diode is used to constant the amount of current.This circuit shows that the current remains the constant .The resistance R1 is used to reduce the amount of voltage and the provide the low voltage to the emmiter of the transistor.The diode is connected to the collector of the transistor which sense the difference in voltage and the voltmeter shows the difference of voltage on screen.
Circuit Diagram
Uses
This circuit is used in different measurement instruments and also in motor controllers and inverters.
