ECC Forum

I found an image of someone's elses power supply showing the pin as positive. I'll go with that, fingers crossed.

I've purchased the above dc setup down transformer. I need to confirm whether the pin on the bcs unit is positive or negative when I wire it up. Annoyingly my wall wort has a removable tip which I discovered which can be reattached 2 ways possibly reversing the poles. I don't trust that I've put it ...