Dusty Chalk Posted March 30, 2018 Report Share Posted March 30, 2018 I misplaced my charger, and I don't remember what I can change and what I can't. The DAC/Amp says 12V DC and shows the polarity. That means 12V, right? I can't use a 15V charger on it? I can use higher amperage, but the voltage has to be correct, right? 'cause the charger I thought I had for it says 15V, but the connector is correct and the polarity is correct. But it could well be for something else, like an external hard drive. Quote Link to comment Share on other sites More sharing options...
spritzer Posted March 30, 2018 Report Share Posted March 30, 2018 Normally you can't go higher in voltage but extra current does no harm with a regulated power supply. Quote Link to comment Share on other sites More sharing options...
Torpedo Posted March 30, 2018 Report Share Posted March 30, 2018 The charger is 12V and 1A output. I'm not sure if the output polarity is + in the center ring and - the shield, it's not displayed in the description, but I can check if you need it. I purchased one of these units in Amazon that have variable output voltage, up to 1.5A and allow for reversing polarity, so it works with a guitar pedal that has 9V and the polarity is inverted with the - in the center ring. The ones I've checked at Amazon US wouldn't allow reversing polarity. Quote Link to comment Share on other sites More sharing options...
penmarker Posted March 30, 2018 Report Share Posted March 30, 2018 Is it this model? If so the center conductor is + and outer conductor is -. You can see the polarity diagram under the label "12V DC ADAPTER". Quote Link to comment Share on other sites More sharing options...
justin Posted March 30, 2018 Report Share Posted March 30, 2018 (edited) 6 hours ago, Dusty Chalk said: I misplaced my charger, and I don't remember what I can change and what I can't. The DAC/Amp says 12V DC and shows the polarity. That means 12V, right? I can't use a 15V charger on it? I can use higher amperage, but the voltage has to be correct, right? 'cause the charger I thought I had for it says 15V, but the connector is correct and the polarity is correct. But it could well be for something else, like an external hard drive. the Pico charging PCB actually has a LM2937-10 regulator at the input, regulating down to 10VDC. it has a max input of 26V. Not that i would recommend this as it would get pretty hot 15v is probably fine as long as the polarity is correct which it most likely is Do not try this off of head-case Edited March 30, 2018 by justin 1 Quote Link to comment Share on other sites More sharing options...
Dusty Chalk Posted March 30, 2018 Author Report Share Posted March 30, 2018 Thanks, all. Understanding helps me remember, so I appreciate all the explanations. Quote Link to comment Share on other sites More sharing options...
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