Quote:

In fact the amperage IS a problem. I fried a boss superchorus pedal by using a higher amperage power adapter



There must have been some other parameter other than the Amperage that caused that problem. Most likely canditate is that the POLARITY of the supply was reversed from what your superchorus pedal required.

However, there is indeed a caveat concerning using a power supply that can deliver much more amperage than the device in question needs to operate properly and that is the case where there already is a FAULT CONDITION in the device itself. If there was something shorted in that device, some component or other, and the supply was capable of delivering, as in the case of the 2A supply powering the 0.2A device, well, there would be an additional 1.8A of Current available to cause all sorts of problems in the device, most of which would be summed up as HEAT, likely leading to more compononent damage and releasing all the magio SMOKE out of the already broken down device. WHEN USING A SUPPLY THAT CAN DELIVER THAT MUCH MORE AMPERAGE TO YOUR DEVICE, YOU SHOULD KNOW ENOUGH TO BE ABLE TO INSTALL A PROPERLY SIZED FUSE IN THE DC LINE THAT WILL BLOW AND LIMIT THE AVAILABLE CURRENT IN CASE OF A FAULT.

Quite a lot of electronic equipment passes over my testbench for repair after attempts to use it with the wrong kind of power supply. I'd say a good 75 - 80% of it is repairable, but sometimes the cost of repair, what with the cost of replacement parts and technician time/labor, often exceeds the amount of money to purchase a new device.


--Mac


--Mac

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