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How to make a voltage level shifter?

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Lord Loh.

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Voltage velel Shifter.

How can I make a voltage level shifter? using a transisitor?

I need to translate a TTL logic level into a 12v logic level.

I tried (swCAD simulation) to apply the 5v at the base and 12v Vcc and tried to take the output from the collector. With no emitter resistor. The output was perfect except that the current was 0mA when the Vc was 12v.(The phase was shifted)

Then I tried to connect the load at the Emitter and the voltage was just 5V or less (Base voltage).(In Phase)

How Can I make this voltage level translator ?

Thanks in advance.
 

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