Voltage Regulator - HobbyTalk
 
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post #1 of 11 (permalink) Old 01-20-2011, 11:21 AM Thread Starter
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Voltage Regulator

Will a residential light dimmer switch work for a voltage regulator for the 22volt wall power units in 1/64 ?

Something tells me it ain't that simple............

Cliff
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post #2 of 11 (permalink) Old 01-20-2011, 11:30 AM
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I think I read somewhere on here a dimmer switch won't work. There is something though that will. From what I've read, a variable router speed control will work. This is a finished unit, ready to use. Plug your power pack into the control, and plug the control into the wall.
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post #3 of 11 (permalink) Old 01-20-2011, 12:04 PM
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Cliff - See if this thread from last March helps...

Light dimmer for variable voltage
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post #4 of 11 (permalink) Old 01-20-2011, 12:07 PM
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Nope tried it a long time ago. Not enough wattage draw from the power pack. They do make dimemrs for low voltage lighting rated at 300 watts but those are @ $35 so might not be affordable.
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post #5 of 11 (permalink) Old 01-20-2011, 09:13 PM
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I've been running wallwarts/battery chargers on cheap household dimmers for years,use them for all sorts of things,car break-ins/homemade dyno's etc.,never had any problems yet.
Wire them into a cheap extension cord and plug your wallwart into the cord.
They aren't what i'd call a good quality way of doing things,but it's cheap and works pretty well for what they are

Here's a pretty decent article on cleaning up a wallwarts output

http://www.dxing.info/equipment/wall_warts_bryant.dx

Last edited by Hornet; 01-20-2011 at 10:27 PM.
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post #6 of 11 (permalink) Old 01-20-2011, 10:48 PM Thread Starter
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Great replies racers, now I have some reference to what I'm trying to do, hopefully.

Again thanks,
Cliff
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post #7 of 11 (permalink) Old 01-20-2011, 11:38 PM
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Quote:
Originally Posted by Hornet View Post
I've been running wallwarts/battery chargers on cheap household dimmers for years,use them for all sorts of things,car break-ins/homemade dyno's etc.,never had any problems yet.
Wire them into a cheap extension cord and plug your wallwart into the cord.
They aren't what i'd call a good quality way of doing things,but it's cheap and works pretty well for what they are

Here's a pretty decent article on cleaning up a wallwarts output

http://www.dxing.info/equipment/wall_warts_bryant.dx

That's a great link. I made up a little variable supply using a wall-wart...probably 5 years ago. I chucked it a month or two ago cuz one of the legs on a cap came loose. Now I find myself lookin' for the stupid thing all the time

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post #8 of 11 (permalink) Old 01-21-2011, 12:54 AM
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I stand somewhat corrected!! I do remember that thread, it must have been one of those early morning reads for me. Sorry if I misinformed you!!
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post #9 of 11 (permalink) Old 01-21-2011, 01:45 AM
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Quote:
Originally Posted by Hornet View Post

Here's a pretty decent article on cleaning up a wallwarts output

http://www.dxing.info/equipment/wall_warts_bryant.dx

Great link, Hornet! Good wall wart info! Thanks for posting it.
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post #10 of 11 (permalink) Old 01-21-2011, 01:51 AM Thread Starter
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No apology needed, I'm happy for just your participation.

These forums are my only way to learn about my passion.

Cliff
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post #11 of 11 (permalink) Old 01-21-2011, 07:14 AM
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This guys resistor values are a little more realistic then other sites have them.
If you use the other voltage regulator diagram done by Dumas (Rich D) it won't work for HO,his resistor values are a bit out to lunch for HO,his resistor values might work okay on 1/32 but won't work on HO

If you throw a decent sized cap on the average wallwart it'll gain close to 5 volts or more on it's output,something like a 35volt 3300uf cap will really wake one up.
The cap will be marked with a stripe,or a negative sign (-) for the negative side of it,if the caps not marked usually the longer wire leg out of the cap is the positive

http://www.slotcarcorner.com/pages.php?pageid=38

Last edited by Hornet; 01-21-2011 at 11:41 AM.
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