I bought a RadioShack 12 V, 1.5A power supply today to replace the one that died yesterday. I had written down the voltage and current, but hadn’t bothered with the actual tip because I expected to just buy the cheapest power supply, cut and strip the wires and attach the tip from the original power supply.
I forgot that RadioShack has the “adaptaplug” power supplies, and that I’d get one tip for free. I just picked a tip from memory.
I picked right.