Title: 2x Universal K12 Air Conditioner Remote IR Receiver For Daikin Haier Gree Midea

In many cases, there are many types of infrared receivers worn by maintenance personnel, and it is not clear how the three pins are defined, which pin is GND, which is power +5v and which is signal pin.

Nekatere sprejemne plošče imajo nejasen natis.

V takih primerih lahko začetnikom pokažemo praktičen trik.
Najprej: večina sprejemnih plošč ima majhne elektrolitske kondenzatorje, npr. 16V 47µF.
Ti so polarizirani.
Pozitivni pol je povezan na +5V sprejemne glave, negativni pol na nožico GND.

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