This question starts out really basic, but then there is a twist. I've been working up a zener diode setup to step down 12v to 9v from my converted PC benchtop power supply to a Sony Radio. Sounds simple enough, while I couldn't find a DC plug that fits this Sony at any local store I decided to cut the lead off the current DC power supply. After cutting the lead I hooked up my voltmeter to the Sony radio power supply, to my surprise it was putting out 13.68v, I realize there would be some voltage drop under load, but the radio it's paired with states 9v input (900mAh rating on PS).
With this being said, I would now like to skip the diodes and just run my benchtop power supply directly to the radio. My PS puts out 12.39v w/o any load, does anyone think this will be an issue for this radio?
I am still really surprised the Sony PS put out so much voltage when it's only rated 9v 900mAh.
With this being said, I would now like to skip the diodes and just run my benchtop power supply directly to the radio. My PS puts out 12.39v w/o any load, does anyone think this will be an issue for this radio?
I am still really surprised the Sony PS put out so much voltage when it's only rated 9v 900mAh.