I picked up a dog collar at a yard sale that didn't come with a charger. Looks to use a 3pin charge port which takes 12v. Don't really want to buy a special charger for just 12v so was wondering how to determine what the pinout might be to make one for myself. I would just open the unit to look at the board, but don't want to break the waterproof seal for the device unless necessary. Thanks!
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\$\begingroup\$ why would a dog collar require a charger? \$\endgroup\$– jsotolaCommented Feb 2 at 19:05
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1\$\begingroup\$ Determining pinout is one thing. Determining if the charger is really a charger or just a power supply is another thing, which likely can't be determined without opening the device. \$\endgroup\$– JustmeCommented Feb 2 at 19:06
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\$\begingroup\$ @jsotola: it's for a shock collar, illegal in Europe and some other jurisdictions because using one is considered to be animal cruelty there. \$\endgroup\$– ocrduCommented Feb 2 at 19:22
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\$\begingroup\$ If it's an ultrasonic collar for insect/parasite infections, it'll work just as well whether it's charged or not. \$\endgroup\$– Cristobol PolychronopolisCommented Feb 2 at 20:37
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Ended up opening it. Counting pins up from middle to outside (1,2,3):
1 = G 2 = +12v 3 = NC
Works just fine with straight 12v. Nothing fancy.