The output voltage is directly dependent on the input voltage.The output is not sinusoidal in nature hence can’t be used for sensitive loads.But it is not a reliable solution because of the following reasons The circuit made in this project is good for powering a light bulb small fan and some other insensitive devices. The above circuit involves high voltage, so precautions must be taken while testing and operation of the circuit. Meanwhile, transistor Q2 becomes active and draws current from the secondary coil of the transformer, due to this the next opposite half cycle is induced in the primary of the transformer.īy this push-pull arrangement, a low voltage at secondary coil induces a high voltage across the primary coil of the transformer. When the output of the 555 goes low to high the transistor Q1 becomes short-circuited and thus the transistor Q3 becomes inactive. This leads to flow of current from Q3 to the secondary coil of the transformer which creates a high voltage across the primary coil (nearly120V). When the output of 555 timer is low transistor Q3 becomes active due to the presence of a voltage at its gate. The output from 555 timer is fed to the gates of the MOSFETs. This circuit includes two MOSFETs IRF540N and one BC549 transistor and some resistors. By varying the 20k pot adjust the frequency of the output wave.
The output frequency depends on the capacitor C1, 20k potentiometer, and R1 resistor. The 555 timer IC generates a square wave of 50/60Hz frequency. Make Sure the battery ampere-hour should be enough to drive the 100watt load on the output.Īdjust VR 20k (pot.) to get 50 or 60Hz frequency. The transformer steps up the voltage to 240V. So, PWM of 50Hz or 60Hz is produced which drives the transistors to change the voltage w.r.t time because Transformers work on AC. Some resistors and capacitors are used to do this function. Working of 12v to 230v inverter circuit diagram using 555 IC:ĥ55 IC is a timer which is used to generate time delay with great accuracy.
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