Author Topic: Val, What does it do?  (Read 5571 times)

Offline Art K

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Re: Val, What does it do?
« Reply #15 on: August 18, 2017, 02:59:53 AM »
Brendon,
I must admit that I used to pull my coffee out of the freezer and grind it but since then apparently I've gotten lazy and grind it at the store. I did see a video of someone running a ice cream churn with a hit & miss. I think when I find the second of the two electric motors from the dead printer I will power the one and see if the other will run. And check the voltage at a known rpm like someone suggested.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Ian S C

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Re: Val, What does it do?
« Reply #16 on: August 18, 2017, 05:15:46 AM »
one year I was taking Dyna to a show, and to give it something to doI made a winch for it, we hooked the line onto a full twenty litre water container and dragged it10 meters across our display site at the show, then set up some shearlegs, and lifted it 3 meters.  The motor will do a lot if the gearing is low enough.
Some have used them to turn a spit on the barba que.
Ian S C

Offline Art K

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Re: Val, What does it do?
« Reply #17 on: February 20, 2018, 02:43:45 AM »
Hi everyone,
I am going to resurrect this topic despite the fact that it has been more than 120 days. I have worked on the brown stuff (walnut), as well as having a friends son who works at a wood working shop. So this has gotten me motivated to move forward with this.

The electric motor I have salvaged out of a scrap printer. I checked the speed with my SW hand tachometer at 1700'ish RPM was 39-41 volts. That's to much for a computer fan 5 or 12 volts. Would appropriate pulleys reduce the voltage or do I need something else. Like a voltage regulator and if so how do I make that, or can I buy something that would do the job? Any suggestions?
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Ian S C

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Re: Val, What does it do?
« Reply #18 on: February 20, 2018, 10:35:42 AM »
Art K, is that 39/41 volt AC or DC?  What ever, I think the best thing is to make up a voltage regulator, use a LM 315K in a TO-3 case, with this you can adjust the voltage, if you input is AC you will need to rectify it.
Ian S C

Offline Admiral_dk

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Re: Val, What does it do?
« Reply #19 on: February 20, 2018, 11:25:30 AM »
The alternators on all my four stroke motorcycles are about 90Vac no load for a 12Vdc system ...!!!!

Offline Art K

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Re: Val, What does it do?
« Reply #20 on: February 20, 2018, 11:59:57 AM »
Ian,
I assumed it was dc, the reasoning was that the ac motor wouldn't put out voltage. I will see if the voltmeter reads ac or dc. To be honest I had the vom clips on the motor, and was holding both the driving & driven using an O-ring as a belt. I did notice it was reading - so swapped the clips around to get +. Is the lm317 the same, when I googled lm315 It came up with the 317?
Dave,
It was an HP printer and yes there were # on it I will check after I get home from work.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Mosey

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Re: Val, What does it do?
« Reply #21 on: February 20, 2018, 02:11:17 PM »
Didn't there used to be a lot of guys building beer can crushers? Then the problem would be where are going to get enough empty beer cans? Or, is that not a problem?
Mosey  :old:

Offline Admiral_dk

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Re: Val, What does it do?
« Reply #22 on: February 20, 2018, 09:31:30 PM »
No the LM317 isn't the same but a very good one too - but beware - not one of those can handle more than some 36Vdc  :zap:

Best wishes

Per

Offline Art K

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Re: Val, What does it do?
« Reply #23 on: February 21, 2018, 02:40:39 AM »
Per,
Thanks I actually discovered I was using Duck duck Go and when I changed to Google came up with a totally different search. I cant even find the same stuff I was looking at before work this morning. The printer motor I have is "HP Mabuchi C9000‑60005 RD530329Printer DC Stepper Motor" All I could find online was replacement motors on ebay and couldn't find any specs for it at all.
Ian,
Quote
I think the best thing is to make up a voltage regulator, use a LM 315K in a TO-3 case, with this you can adjust the voltage, if you input is AC you will need to rectify it.
The LM315 I found was a 3 pin chip. In found a description of the TO-3 on Wikipedia.
But being electronically deficient what do I do with them? The LM 315 acts as a voltage regulator what does the TO-3 do? or is the TO-3 just a case to mount the LM315 chip. Do you have some sort of wiring diagram of what I would need to run say a large computer fan "as a cooling fan"and maybe a few lights maybe LED's. I did figure from what I did find online that it is a dc stepper motor couldn't find the voltage though.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Bluechip

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Re: Val, What does it do?
« Reply #24 on: February 21, 2018, 07:15:24 AM »
Hi Art

 IIRC  T.O. stands for 'Transistor Outline' which, as you have found, is the mechanical package for the device. TO-3 is just one of them.

Umpty zillion of variations   :thinking:

Fill your boots ....

www.bing.com/images/search?q=Transistor+Package+Types&FORM=IDMHDL

D.

« Last Edit: February 21, 2018, 07:22:05 AM by Bluechip »

Offline Bluechip

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Re: Val, What does it do?
« Reply #25 on: February 21, 2018, 08:01:36 AM »
Does it look anything like this?

www.ebay.com/itm/222454346155?item=222454346155&rmvSB=true

ie.  Just 2 wires poking out?

If so it's just a permanent magnet DC motor. Not a Stepper Motor at all ...  :headscratch:

There will be a DC output. The voltage will be more or less proportional to RPM.  If you whizz it round the other way the polarity will reverse.

I assume you just have the meter across the output?  The voltage will drop somewhat if you put a load on it.

Got a 12V 21W car lamp / bulb ?   Try that. Wind the revs up slowly and measure the volts. If it doesn't do much, the lamp only glows a bit reddish etc. then try it with a 12V festoon lamp instead, the ones often fitted to inside lights in a car, contacts at each end.

There are a lot of that generic sort of motor kicking about, what you get out of them as a generator is a lottery, but you'll get something ... might not be all that useful though ..  :D

What do you intend to run on it anyway?

Dave


« Last Edit: February 21, 2018, 08:17:12 AM by Bluechip »

Offline Ian S C

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Re: Val, What does it do?
« Reply #26 on: February 21, 2018, 09:35:23 AM »
I use a number of motors as generators and alternators, a good one is a small 12V DC motor with fairly low speed(probably around 5000rpm), as found in the likes of printers, VHS recorders.
Ian S C

Offline Art K

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Re: Val, What does it do?
« Reply #27 on: February 21, 2018, 11:46:35 AM »
Dave,
Yes it looks like that, two wires and the white pulley. I'll try a light of some sort. I was driving it with an electric motor so the rpm was probably around 1700 rpm. To cold outside to run it on Val quite yet.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Art K

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Re: Val, What does it do?
« Reply #28 on: February 22, 2018, 04:25:35 PM »
There is a remarkable lack of information on the internet about this electric motor. Mabuchi HP C9000-60005 It does appear to be a 12-18v motor but that is all I can find, no rpm, amps etc. If I was reading 38v does that mean the rpm was to high and it needs to spin slower?
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Bluechip

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Re: Val, What does it do?
« Reply #29 on: February 22, 2018, 04:48:28 PM »
There is a remarkable lack of information on the internet about this electric motor. Mabuchi HP C9000-60005 It does appear to be a 12-18v motor but that is all I can find, no rpm, amps etc. If I was reading 38v does that mean the rpm was to high and it needs to spin slower?
Art

In a word, yes.

As Admiral_DK says an unloaded and uncontrolled generator will output roughly proportional to the rpm.

I have had in excess of 70V DC from a Miller 6V dynamo. This was with 6V connected to the field winding. It will just keep going up as the revs. rise.

Yours is a permanent magnet motor. It will do the same.  It's what they do ...

Did you try loading it? What happened to the output volts?

Dave