Convert NPN to PNP Signal - Simple Circuit Diagrams

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Hello All,

I have a sensor which outputs an NPN signal, however, the gauge it connects to only inputs PNP signals, how can i convert the NPN to PNP?

I have tried looking for circuit diagrams and simple converters but I have found nothing, all help appreciate.

Thanks
 
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Basically, the NPN sensor has three wires coming out of it and the gauge had an input of three wires, however, the gauge requires PNP not NPN, so i need to convet the NPN to output PNP