112Views6Replies

Author Options:

Voltage regulation Answered

I have a solar charge controller (Velleman SOL4UCN2) that outputs 12v, 6v and 3v. But I need 9v and I'm not sure how to get that.

Discussions

0
None
pless84

10 years ago

Yes it's simultaneous outputs, so I gues the 7809 is the way to go. Thanks for the help :)

0
None
Sandisk1duo

10 years ago

So basically build this then tune it to put out 9v (use a miltimeter

0
None
NachoMahma

10 years ago

Use the 12V and 3V outputs (3V will be the negative) - that will give you 9V. May cause a problem if the negative side of your load is grounded.

0
None
guyfrom7upNachoMahma

Reply 10 years ago

that's what I was thinking, but I thought it only gave out 1 output at a time

0
None
NachoMahmaguyfrom7up

Reply 10 years ago

. He used "and," not "or," so I'm assuming they are simultaneous. If you're right, then the 7809 (or similar) would probably be the way to go.

0
None
guyfrom7up

10 years ago

how efficient does it have to be? You can just use a 7809 with the 12 volt output