Eletric DC Motor, or low voltage AC Help

[~MetalDigger~]

Yes I have this little motor that I took off a Bushnell Reflector telescope, that I traded to a friend. This little motor has four wires, Orange, Brown, on top, bottom two wires are Yellow, Black. I took a battery holder that holds 4 AA's, and I touched the wires but no joy. Could this be AC, or am I not supplying enough DC volts, it would only make a spark, when touching somewirs to the battery pack.

I was planning on useing this to build a small rock tumbler, it supports a nice set of brass gears, and is gear pretty slow.

 

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[seas1to2]

you could look up the scope an see what it says... here 1 I found, not sure what model you have....76mm aperture reflector optical tube with 1.25" rack-and-pinion focuser; single-arm fork mount with electric slow-motion controls; dual-axis motor drive system with sidereal-rate tracking; RVO (Real Voice Output) computer hand control; internal battery compartment accepting one (user-supplied) 9-volt battery; 4mm (175X) and 25mm (35X) 1.25” eyepieces (105x and 525x with supplied 3x Barlow lens); red dot non-magnifying finder; operating instructions; adjustable height field tripod...(. this 1 say a 9volt battery ) ALSO forgot to add these motor are very slow turning, normial speed is the same as a clock, they are set to turn the scope at the same speed to keep am object in focus so it would make a comple turn in 24 hours, the extra wires would go to a push button to speed the scope up to move to a new spot

 

[xdanthemanx]

two of those wires i'm sure go to a magnetic brake inside the motor or a digital counter
if thats the case youl need to power bothe sets of wires, now the question is whick ones
im sure its a dc motor as the scope originally operated on beatteries correct? it would make no sense to convert dc to ac for the use of a motor from batteries it would also kill battery life almost instantly to do so, get a voltmeter, put in continuity mode and find out which wires show a ground the solor coding would suggest ac with the yellow wire but beeing that it was probaby an imported assembly they are prone to use whatever wire they have the cheapest reguardless of cost, how many batteries originally went into the device it came out of? that should tell you what voltage it was designed to run on, guessing from the size i would say 6volts and it looks like a mag motor.
dan

 

[~MetalDigger~]

Thanks for your help, I have tried everything I know, and all I can get it to do, is jump, I've tried 8AA in a battery holder, and that want turn it, it must need the trash can,

 

[EasyMoney]

It looks like it's a 2-phase 110 motor to me, but probably a rare 110 volt one that used a reduction transformer to it.. My guess is the latter. The input could be 24v, 22v, 6v, or just about anything. Ohm's Law would be useless here without knowing more than just the resistance factor.

Get an ohmeter and see if there is any real high resistance in each wire (including infinity) when two wires are connected to two separate leads. If there is, then it is shorted inside the enclosure, OR the wire has been heated to the point of deterioration. In either case it's a piece of junk now. If the resistance is between 0 and 5 ohms it's probably a low-voltage (under 24v) device. If it's rather high in all tests it's probably 110 AC.

To test it for DC, get a 9v, try that between two wires at a time, there will be 12 possible combinations, not just two. If that doesn't work you have the option to try hooking it to 110 AC directly, and in the same manor as the above. Don't try this though if you are near soil, metal, anything wet, any minerals, any other electrical equipment, or have your skin touching the wires or any of the metal housing, etc on it. If you do, you could be having your heart being used as a science project somewhere in the world by a bunch of would-be budding young physicians with awe in their eyes, thinking; "since he got here the way he did, he must have had less than a room temperature IQ anyway".

If you don't feel confident testing with 110 AC (60 cycles) then throw the thing in the trash before you kill yourself. 60 cycles matches your heartbeat enough to interrupt your heart rythm, hence easily causing death or your eyeballs being blown clear out of their sockets. On the other hand, you could be used as a human Christmas tree too and save the family $25.

Alright, I'm just kidding a little on that one..

EasyMoney

 

[warsawdaddy]

Call Bushnell and ask to talk to a tech rep.

 

[~MetalDigger~]

I'm thinking it's Easymoney said it's a 2 phase, or sumthing like what he said. I was hopeing it would be DC, but if it had I could have made it run, since I'm about a expert with DC Brushed, and Brushless Motors, I have loads of experince with RC Cars Trucks And RC Lipo, and Nitro Helicopters.

But I have lost intrest in this more, because it's a pain

Thanks for the help guys.