Meanwell SE-200-15
For those who don't know, this is a regulated DC power supply up to 15V. Got one, to charge my car battery "properly" :)... All is good, adjusts volts all the way to 15. One question: Is there an...
Forum Discussion
Regarding the original question (bigger knob)...
On my recently acquired MegaWatt 400, I didn't feel like pulling the whole thing apart to replace the pot. So I just paralleled the new 10 turn with the original and set the original to as low (resistance) as it would go (Highest voltage). To do this I just soldered zip wire to the exposed legs of the pot on top of the board, and ran it to the new pot, stuck to the top of the PS with mounting tape.
On these supplies, lower resistance corresponds to higher voltage - noted by Landyacht & confirmed on mine. Parallelling the pots allowed me to shift the resistance down just a smidge, since the original pot had a range of ~1-980 ohm or so. Now I have <1 to ?something just under 980?. The voltage available was ~9.5 -15.5V, now it's about 10-15.8 . Numbers are approximate, I did this a month or so ago.
On my recently acquired MegaWatt 400, I didn't feel like pulling the whole thing apart to replace the pot. So I just paralleled the new 10 turn with the original and set the original to as low (resistance) as it would go (Highest voltage). To do this I just soldered zip wire to the exposed legs of the pot on top of the board, and ran it to the new pot, stuck to the top of the PS with mounting tape.
On these supplies, lower resistance corresponds to higher voltage - noted by Landyacht & confirmed on mine. Parallelling the pots allowed me to shift the resistance down just a smidge, since the original pot had a range of ~1-980 ohm or so. Now I have <1 to ?something just under 980?. The voltage available was ~9.5 -15.5V, now it's about 10-15.8 . Numbers are approximate, I did this a month or so ago.
