A simple NPN and PNP transistor inverter

471

08:35:01

In this circuit we can use a 2N3904 for the NPN circuit and we can Use 2N3906 for the PNP circuit
These circuits only uses 4 resistors 2 Transistor and a 230v to 12v center tapped transformer
The parts
2 - 1k resistors
2 - 500ohms resistors
2 - 2N3904 or 2N3906 transistor
1 - 230-12v step down transformer

Tips
For NPN inverter the positive terminal of the battery goes to the terminal of the CT Trans
and For the PNP Reversed

published 8 years ago

methamafoz

8 years ago

Nice design. I have a question. Why 1k and 500 ohm resistors are connected to the bases of the transistors.?

BillyT

8 years ago

@methamafoz, the base current of transistor should be limited to the collector current divided by the transistors gain.

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