12v DC to 240v DC Voltage Inverter

The basic difference between last post of 12v DC to 240v AC and this circuit is that there is a Bridger Rectifier added at the o/p of the transformer. And there are some p-n diodes added so that the reverse current is not allowed and the circuit is safe from accidental reverse currents.

Components needed:
You can easily figure out the components which are needed for this circuit from the diagram.

Working:
This circuit contains the  555 as an astable multivibrator. Diode D1 is added to ensure the 50% duty cycle of the multivibrator. For half of the time Q1 is OFF which is driven by direct voltage coming from the multivibrator. To be specific Q1 will be OFF for the time when o/p of multivibrator is low. Now, Q2 is connected to the collector of Q1. So, Q2 will be ON for the period when o/p multivibrator is low and Q1 is OFF. For next period Q1 will be ON and Q2 will be OFF. So this design ensures constant voltage supply for Transistor.
Rest of the work is given to Transformer. It lifts up Voltage to the voltage level needed.


Note:
The capacitors used in the should be Tantalum capacitors because Ceramic or Electrolyte will tend to blast at these type of power operations.

Hope you will find it interesting and helping....

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