End Cut

How can I tell which wires on my 12V DC adapter are positive and negative if I've cut off the plug end?

I have a 12V DC adapter, and I needed to use it in an electronics project. I cut the round plug end off of it so I could use a breadboard for my project before I go and get a PCB fabricated. How can I determine which wire is positive and which is negative. I don't wanna blow up any Capacitors!

Got a meter?
Test lamp and rectifier?

RESIDENT EVIL - VOICE ACTING HORROR - 10 MINUTE CUT




Sahara 02500 Wadi Melene L3 Meteorite 267g Amazing End Cut
Sahara 02500 Wadi Melene L3 Meteorite 267g Amazing End Cut

$79.99
28d 3h 1m remaining

Sericho Pallasite Meteorite from Kenya Africa Habaswein 462 gram end cut
Sericho Pallasite Meteorite from Kenya Africa Habaswein 462 gram end cut

$76.00 (24 Bids)
2d 15h 56m remaining

Sericho pallasite meteorite 305 gram polished end cut
Sericho pallasite meteorite 305 gram polished end cut

$2.04 (4 Bids)
1d 8h 58m remaining

NWA 7122 L4 Chondrite Meteorite 409 gram end cut with a great composition
NWA 7122 L4 Chondrite Meteorite 409 gram end cut with a great composition

$7.50 (9 Bids)
2d 15h 12m remaining

NWA 7650 L6 Chondrite Meteorite 804 gram end cut with metal
NWA 7650 L6 Chondrite Meteorite 804 gram end cut with metal

$15.50 (8 Bids)
2d 15h 34m remaining

NWA 6216 very rare CR2 carbonaceous meteorite 36 gram end cut
NWA 6216 very rare CR2 carbonaceous meteorite 36 gram end cut

$0.99 (1 Bid)
5d 8h 49m remaining

Bondoc Meteorite etched end cut 146 grams
Bondoc Meteorite etched end cut 146 grams

$80.00
25d 7h 1m remaining

NWA 869 meteorite 85 gram polished end cut
NWA 869 meteorite 85 gram polished end cut

$0.99 (1 Bid)
5d 8h 47m remaining

NWA 869 688 gram Double polished End Cut
NWA 869 688 gram Double polished End Cut

$60.00
7d 21h 50m remaining

Gebel Kamil 26 gram end cut
Gebel Kamil 26 gram end cut

$55.00
19d 23h 47m remaining

NWA 869 meteorite 67 gram polished end cut
NWA 869 meteorite 67 gram polished end cut

$0.99 (1 Bid)
1d 9h 14m remaining

Camel Donga Meteorite end cut 2 grams
Camel Donga Meteorite end cut 2 grams

$47.00
2d 12h 18m remaining



« Previous12345...89


Tagged with:

Filed under: Meteorites & Tektites