The inverting signals from the oscillator are amplified by the Power MOSFETS T1 and T4. The formula for the frequency of square wave generated by the astable multivibrator is The values of R1, R2 and C1 (R4, R3 and C2 are identical) will decide the frequency. In the circuit, R1, R2, R3, R4, C1, C2, T2 and T3 form the oscillator.Įach transistor produces inverting square waves. This can be achieved by constructing an Astable multivibrator which produces a square wave at 50Hz. A 50Hz oscillator is required as the frequency of AC supply is 50Hz.
The circuit can be divided into three parts: oscillator, amplifier and transformer. 12v-220v center tapped step up transformer.The inverter implemented in this circuit is a square wave inverter and works with devices that do not require pure sine wave AC. It can be used to power lamps up to 35W but can be made to drive more powerful loads by adding more MOSFETS. This primary voltage is then stepped up to a higher voltage depending upon the number of turns in primary and secondary coils.Īlso get an idea about 12V to 24V DC Converter Circuit Inverter circuit Using TransistorsĪ 12V DC to 220 V AC converter can also be designed using simple transistors. The basic idea behind every inverter circuit is to produce oscillations using the given DC and apply these oscillations across the primary of the transformer by amplifying the current. Applications of 12v DC to 220v AC Converter Circuit.12v DC to 220v AC Converter Circuit Operation.12v DC to 220v AC Converter Circuit Using Astable Multivibrator.