Explanation of the joule thief circuit to double the voltage

Explanation of the joule thief circuit to double the voltage

Explanation of the joule thief circuit to double the voltage

Joule Thief is a simple circuit that can multiply the voltage of the power supply, for example, it can be input to it 1.5 v and output to you 3V by converting the constant voltage signal into a series of fast pulses by means of the transistor compound This circuit is used in many lighting projects, etc.

How does the joule thief circle work

 When the circuit is turned on, a current is applied to the base with a voltage of approximately 0.7v, and this is due to the passage of an electric current through the coil, and this leads to the generation of a magnetic field, which causes an increase in the current strength, and this increase in the current leads to the transistor reaching the stage of saturation . 

I advise you to watch this article about the transistor to understand it more from here .

After saturation of the transistor, the current in the secondary coil reaches its maximum value, which causes the magnetic field to decay This is due to the absence of a change in the intensity of the current.

This will cause the current in the primary coil to decrease, which means the current applied to the base of the transistor will decrease. 

When the current passing through the secondary coil decreases, a reverse electromotive force is generated on it in order to resist the passing current, which leads to induction of the primary coil in the opposite direction, and this is what generates a negative voltage that leads to stopping the transistor. 

When the transistor is closed, the primary coil current becomes zero, until the transistor is opened again, so the process is repeated again. 

With this, we come to the conclusion of this article, through which we learned about how Goal Thief works. For more information, please visit the official page of the site so that there is better communication.