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Voltage Booster Circuit Description

Transistors:
NPN Transistor: BC547
PNP Transistor: BC557

Ferrite Core:
Type: 35-0-35 turns
Wire: 28-gauge enamel copper wire

Resistors:
Two 1kΩ resistors (R1 and R2)
R1 connects the collector of BC547 to the base of BC557
R2 connects the collector of BC557 to the base of BC547

Operation:
The circuit uses a push-pull configuration to boost the input voltage.
The BC547 NPN transistor and BC557 PNP transistor work together to oscillate the circuit.
The ferrite core with 35-0-35 turns of 28-gauge enamel copper wire serves as the transformer.
The 1kΩ resistors (R1 and R2) provide feedback and stabilization to the circuit.

Note:

This circuit is a type of joule thief or voltage booster circuit, which can boost the input voltage to a higher level.
The output voltage will depend on the input voltage, number of turns, and other factors.
Proper safety precautions should be taken when working with high-voltage circuits.