where can I find a connection diagram for this device to get polarity correct.
1450771
There is a (+) /(-) scribed in the plastic housing. Double check continuity with corrospding tabs.
1450772
Polarity is embossed on the ceramic substrate with traditional symbols of positive and negative. If you can't locate, use s multi meter as it is a diode and only passes current from negative to positive
1450773
LEDs can handle being connected in reverse polarity, they just won't light up. Connect it one way, if it doesn't light up, reverse it and mark it with a sharpie.
1450774
It's printed on the chip. You solder your wires to the tabs in between the white molded insulation. Not the outside tabs sticking out. Sort of long oval cut outs in the white printed board on top and bottom. Mine works great. Stupid bright
1333753
It uses deans connectors which determine the polarity. Search images of deans connectors.
1550328
No, no polarity detector. You have to change the connection to measure charge or discharge currents.
685904
I just used a 12v adapter I had lying around. I cut the end off and used a multimeter to make sure the polarity was correct and hooked it to the board. Please, do be careful about the where you put the positive and negative. I remember reading on the net that this device won't protect itself from reverse polarity on the dc voltage. Meaning, the circuit board will be ruined.
2022679
You have to then connect a jumper wire from the positive and negative 'round buttons' at the top to the rails on the grid you want to be negative and positive, usually the red and blue rails. Lemmie know if you still have trouble I'll upload a pic
1695626
I assume one of the prongs is a bit larger (more square)? That is the modern polarity plug and sometimes they will not fit into old outlets. A couple-dollar adapter bought at any hardware store will cure your problem (take fixture with you so hardware store people know what you are talking about) or, you can update the outlet in your home that you want to use, with a new design outlet (not easy for untrained person to do and could be dangerous to try by yourself).
1720917
The two large terminals on the sides are the contactor contacts. The two smaller terminals on the top are the coil. Either can be connected in either polarity.
676291
You have to look near socket on device, or on original AC Adapter. On the Velleman PS, it's clear how to connect adapters for center positive, etc.
1333755
the wire with the dean connector that is included is color coded red/black for the polarity. output is the load dean socket. source is the input dean socket. it's clearly labeled in the watt meter case where you plug in the dean connector.
568227
Red to +12V Black to ground Yellow to low side (-) of load Load (+)connect to +12V
1063935
Make sure the contacts line up. It could be a polarity problem. They only work with the power going in one direction so the lines would have to be reversed.
785401
I would just go get a "universal" power. Usually under $10. All it needs to do is match the polarity and size of the plug-in as well as the voltage. Universal should do it. NOW, if that works, tell me how you get it to work.
1356539
I would make sure the receptacle is working right and is wired and polarity is correct. Dennis
2105208
Yes, but be sure you have it wired with the correct polarity- see Joe K.'s response.
345635
Do you mean that the connectors for (+) and (-) terminals of 9V battery have collapsed? Try using a long-nose piler to gently bend the connector back into shape. If that doesn't work, go to Radio Shack and get a replacement connector and solder it to the charger. Just make sure you get the polarity correct.
1137149
Check the polarization of the wires. There are only 2 wires but they must be in the correct polarization
365121
As shown in the photo, the yellow dial on the Left is the polarity selector. You can select which polarity you want.