hacked a cable

Denis needed a custom cable for his astro equipment. Asked me to make it for him. Gave me long 60" cable with male RCA plug as well as one of those little universal power plugs.

I'm trying to put a USB hub on my imaging rig and I would like to run it off my Kendrick controller's 12V DC output (similar to what you did with the Telrad this past summer).

Misplaced the original note so I had to spend some time snooping. I knew I had put it in my Psion... but it wasn't showing up on various keyword searches. It wasn't until I considered that it could be the archived that I was able to confirm the required configuration. It needed to be 20" long and tip negative.

That made we wonder where negative was on a Kendrick controller... I powered up my old trusty Type IV and checked the polarity. Centre pin was positive! As I suspected.

I noted the layout of the RCA cable: central white wire was the pin; with the bare wire the shell.

The last piece to the puzzle... the plug configuration. The centre hole was the far pin; the outer shell was the "near" pin.

So, that means the bare wire goes to the far pin.

Fabricated a strain-relief, bowed the cord, and glued the strain-relief to the plug.

Done.