Re: Convert ac to dc

jasen <jasen@xxxxxxxxxxx> wrote:

On 2007-04-13, Victor MacQuarrie <skeena@xxxxxxxxxxx> wrote:
wlb <nottelling@xxxxxxxxxxxx> wrote:

Hi again guys........ Thanks for the info on the transformer Ben . It
seems to work fine. Only problem is,..... I could only get a 3300uf 25
volt capacitor. The tech told me it should work, only problem now is I
have an output of 18.89 volts dc. which I think is probably not good
for the pump. Pump is designed to run from 12 v to 16 v dc.
Would a 4700uf 12v cap. solve the problem???

Was this measurement taken with the pump operating?
because if it wasn't it's not telling you anything useful.

If you want less voltage, using a smaller cap may do it.

A little, or even a large amount of, ripple is unlikely to damage a motor.
This sort of equipment is designed to withstand vibrations: a thyristor
speed control gives worse ripple than a full-wave rectifier.

Bye.
Jasen

I disconnected the cap. and took a reading with pump running,.
The output is 10.98 volts at 1.9 amps. The trans is rated for 3 amps
ac, and the pump rated for 2.5 amps dc. It all seems to be working so
far.
Thanks for all the input........Vic
.

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