It might be a good idea to put color codes like on a resistor on the connector plug. You know, green for 5 gold for + center pin and silver for - center pin.
No gold or silver band would be AC. Brown Red Gold would be 12VDC + on center pin. Dwight ________________________________ From: cctalk <[email protected]> on behalf of Chuck Guzis via cctalk <[email protected]> Sent: Tuesday, February 6, 2018 7:28:38 AM To: Tor Arntsen via cctalk Subject: Re: [RESOLVED] Re: EPROM baking On 02/06/2018 12:05 AM, Tor Arntsen via cctalk wrote: > .. which led me to accidentally power a USB hub with 12V instead of > 5V - the power supplies looked the same, had the same plug, and I > couldn't read the tiny writing on the warts. That blew the nicest > notebook PC I've ever found - I bought it in Japan at a special > price, the normal price is out of my league. I've done worse--used an AC-supply wall wart on a piece of equipment. Poor thing didn't stand a chance. You'd have thought that after all these years, some sort of keying system would have been developed, but I guess not. --Chuck
