I need to make a voltage level shifter. It needs to translate a TTL logic level into a 12 V logic level.
I have applied the 5 V at the base and 12 V Vcc and took the output from the collector (not using any emitter resistor). The output was good, but the current was 0 mA when Vcc was 12 V and the phase was shifted.
I've tried connecting the load at the emitter and the voltage was just 5 V or less.
How do I make such a voltage level translator?