Hi.
I built a power supply to be used with a HoppyCNCPro kit.
I started with a 25VAC x 2 at 3.2A toroidal transformer. Linked it up in Parallel and made sure its in phase.
Next I installed a bridge rectifier(35Amp max) and then a set of capacitors to smooth out the spikes.
I used the Gecko formulast to calculate the uF I needed.
14'630uF = (80'000 x 6.4A)/(25VACx1.4)
I used 4 x 4700uF capacitors in parallel ending up with a total of 18800uF.
(Also added a resister to de-charge the caps when you switch the PS off)
I know the capacitors are about 4200uF over the needed amount.(is that a problem?)
If I look at the DC output I get between 40v and 41.2v...
Why is this? (It should be 36V,right?)
Any advice would be appreciated.
Thanks.