Flyback 12-0-12 Transformer. #experiment #electric #electronic #diyprojects #diy #diycrafts

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Basic OperationTransformer:

The 12-0-12 transformer steps up the voltage. When driven by an AC signal, the low-voltage side (12V) converts into a higher AC voltage on the 220V side.

2N3055 Transistor: This is a power NPN transistor used to switch the low-voltage DC power on and off at high speed. This switching action creates an alternating current (AC) in the primary winding of the transformer.Base Resistor: The 1kΩ, 1W resistor limits the base current to the transistor, ensuring it operates within safe limits.Basic Circuit Description

Power Supply: You provide a DC power supply to the center tap of the transformer (12-0-12 side).

Switching: The 2N3055 transistor is connected to one of the outer terminals of the 12V side of the transformer, with the emitter connected to ground.

Base Drive: The base of the 2N3055 is connected through the 1kΩ resistor to a control signal, typically from an oscillator circuit that alternately switches the transistor on and off.

Output: As the transistor switches on and off, it creates a pulsed signal that the transformer steps up to the higher voltage on the 220V side.
Important Considerations
Oscillator: To drive the 2N3055, you will need a square wave oscillator or similar circuit to generate the AC signal. Without this, the transistor will not switch properly, and the transformer will not output the high voltage.

Heat Dissipation: The 2N3055 transistor will generate heat, especially under load, so it will require a heat sink.
Safety: Working with high voltages can be dangerous. Ensure proper insulation and precautions to avoid electric shock.