inverting pnp circuit

[batman]

can someone show me a schematic using a pnp transistor that inverts a logic signal? for example, high input = low output, and vice versa? thanks

 

[Nigel Goodwin]

can someone show me a schematic using a pnp transistor that inverts a logic signal? for example, high input = low output, and vice versa? thanks

Exactly the same as an NPN one, just flip the entire circuit upside down.

 

[batman]

you mean switch the positive an ground supplies, or just the transistor, or both?
is there a way to do it with an npn?

 

[ChrisP]

is there a way to do it with an npn?

Here's a simple NPN Inverter -- this should get you started...

**broken link removed**

 

[Nigel Goodwin]

you mean switch the positive an ground supplies, or just the transistor, or both?
is there a way to do it with an npn?

As you asked for PNP, I thought you knew about an NPN one!.

Here are simple examples of both, depending on the actual outputs feeding them you may need to add a resistor between the base and emitter of the transistors.

 

[batman]

thank you VERY much! exactly what i was needing.