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From: Bob Conrich (no email)
Date: Thu Aug 19 1999 - 12:07:37 EDT
Amesbury, Kurt wrote:
>
>
> If you want to regulate the voltage, you can pick up a 12-volt regulator
> (it's either a 7812 or a 7912 - one's positive, the other negative and I
> don't recall which is which) at any electronic parts store. Cost should be
> under $1. You'll need a couple of capacitors and resistors to complete the
> job. Potting the entire circuit in an old 35mm film canister provides
> corrosion protection.
>
> Hope this isn't stating the obvious!
----------------------------
For the electronically challlenged, such as myself, it's far from obvious,
but I'd like to learn more.
I see in an electronics catalog that the 812 is a positive regulator and
the 7912 is the negative one. However, they're only rated at one amp, so
I'm not sure this is the solution for a 25 watt, 12 volt halogen lamp.
Other regulators are listed which are adjustable from 1.2 to 37 volts.
That's an interesting option, perhaps for a 24 volt or other requirement.
But again, these are low-amperage devices.
I plan on having a large boat with quite a few halogen lamps and a very
large battery bank. What's the best way to have a large, regulated power
supply that will fulfill these various needs? Are such devices
commercially available? Is this what's called a DC-to-DC power supply?
Please use small words. :)
Bob
--------------------------------------------------------------------------
Bob Conrich
Box 666
Anguilla
British West Indies
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