univolt mark 5

[john hd]

hey gang,

got a univolt in the mail today for a buddys trailer. (thanks chas! )

here is a list of the components:

capacitors:

73 03 60hz
usa
72 f 6476
4 uf 660volt
e 2010-12

diodes:

M (motorola)
IN 3492 R
7321

transformer:

sand filled no markings

[john hd]

here they are

[john hd]

again for your viewing pleasure

[john hd]

and a view of the sand filled transformer that weighs almost as much as the anvil it is sitting on!

[Pick]

Hmmm. Interesting. Looks like it is nothing more than a simple 12 volt power supply, John. Does there seem to be a voltage regulator board in there anywhere? Any type of feedback circuitry to limit charging voltage? That looks just like mine. I hope that one is not setting on the anvil for........never mind.

The fact that it has those caps in there, means it should put out some clean DC, no?

[john hd]

pick

nope none of the above, just rock and stick technoligy.

the caps look just like the ones our old furnace used, pcb no doubt!

i think charging is limited by unplugging!

john

[Chas]

Yep,

That's my old P.O.S. buzzy Univolt, if you look closely you can see the bottom fuse holder which was cooked.

Looks like I'll be munching on cheese curds and washing them down with some Old Style beer here in Texas any day now!

Chas

[femuse]

John & Chas, you both confirmed 2 things about our old Univolt:

I think charging is limited by unplugging!

Now we know why it cooked our batteries. We thought it was bad. You mean, that the way it was supposed to "work" ?
That's why they made it so loud and put it at the head of the bed. So we remembered to unplug it at night.

the bottom fuse holder which was cooked.

we can send you a picture of ours to double check: YES, it's cooked, all right.

[john hd]

Originally posted by Chas
Yep,

That's my old P.O.S. buzzy Univolt, if you look closely you can see the bottom fuse holder which was cooked.

Looks like I'll be munching on cheese curds and washing them down with some Old Style beer here in Texas any day now!

Chas

yes you will!

john

[WayWard Wind]

Don't know much about the univolt thing, but being a blacksmith, what do you want $ for the anvil ?
Best,

[thenewkid64]

Looks like a Genuine "Rare" Acme brand anvil

No matter what the actual cost of the anvil, the freight is the killer!

[john hd]

Originally posted by A.E. Milliman
Don't know much about the univolt thing, but being a blacksmith, what do you want $ for the anvil ?
Best,

dunno,

they are kinda hard to come by.

you never know when you might need to take care of cartoon rabbits in the garden!

look here i was floored by the prices!

john

[WayWard Wind]

Now you have me worried, $, by that " kinda hard to come by " remark. I see you're in Wisconsin, so would the $ be less if I have to eat cheese? BTW I have several cousin's, a daughter & of course a son-in law, that reside in the Land of the Lost. Also that link you sent does not work. error page comes up that says " can not locate " usual from the Green & Gold. Just kidding.
Best,

[john hd]

A.E.,

i see you are in north central minn. is that near brainerd?

i've got some in laws up yer way. don't know why they strayed from the flock.

maybe we could work out a nice trade for a 150 pound jello mold!

just kidding!

are the vikings ever gonna make it to the super bowl?

john

[Pick]

Anvils are cheap, it's the darn shipping that gets you!!! Anvil $1700, shipping, $4000.

[thenewkid64]

Dropping it on your your enemy, pricelesss

[WayWard Wind]

yep ! Living in the land of milk & honey, frozen septic systems & water lines ( not ours happy to say ) & one fish. we are 25 miles North of Brainerd, in Breezy Point. You know the Viking would have won the Super Bowl against Kansas years ago, but several of the Vikes key players were suspended for taking an illegal substance. Seems the league inspectors were in the locker room before the game & smelled what they thought was an illegal product. Lutefish & ruggabagas--After the game they discovered that it was some dirty soxs & jock straps. Anyway we were robbed of glory! If you should ever come up this way stop by ---bring the anvil & stump & we can have a beer & discuss the situtation.
Best,

[john hd]

installed the unit today, replaced the rubber bushings that mounted the transformer. seemed to quiet it down some.

here it is in it's new home humming away. we pulled the oven to make it easy to get at.

john

[john hd]

here is the deceased unit, found no output from the transformer to the diodes. (no wonder it didn't make much noise! just a very low hum, quite un univolt like!)

if it is not rebuilt we will save it for a donor unit just incase frankenverter needs parts.

once again, THANX CHAS!!!!!

john

[trumpwer]

Now you guys got me nervous. The book says I can leave the trailer plugged into 120 volt, the univolt maintains battery, then fades off. Is that going to "cook my batterys"? If so, should I unhook the battery when I am hooked to 120 for a couple days?