Need to I.D. Mystery DC Motor
Greetings,
I found a cheap brushed DC·mystery motor a few weeks ago at a local·surplus store.· I·can't find a datasheet for it.· I was hoping someone could point me to specs on this motor or at least hazard a guess as to what voltage it was designed to run at.· Some particulars:
Torque Systems Incorporated
An EG&G Rotron Co.
Waltham, MA USA
Model No. MT-2015-017U4G10
Dual motor shafts, 1/4" dia.
Motor diameter: 2.02"
Motor case length: 5 3/4"
The motor is·labeled "PM Field DC Servo Motor" and has one of those ancient DC generators as a speed output (pretty much a 2nd brushed motor going along for the ride).· I ran·the motor·at various voltages, measured the rpm with an external tachometer, and·measured the·voltage from the·generator.··I've never played with one of these before, and·I was·(literally) shocked at the results.··At 45.8 VDC to the motor (the highest the DC power supply I'm using·can go), the motor·hit 7414 rpm, and the output of the DC generator was 102 Volts!· Yowza!· (Here I was expecting something like 5-12V.)
Anyone familiar with this era of technology have an idea of what this motor is supposed to be running at?· At no load I measure the following:
3773 rpm @ 24.0 V, ~0.28 A, Vgenerator = 52.5 V
5767 rpm @ 36.0 V, ~0.30 A, Vgenerator = 79.4 V
7414 rpm @ 45.8V, ~0.30 A, Vgenerator = 102.4 V
At stall, it pulls about 3.5 A @ 24 V.· (I wimped out on higher voltages.)
It's not clear to me what voltage this motor was designed for.· If anyone can point me to specs on it, I'd greatly appreciate it.· I haven't had any luck searching the web.· EG&G evidently has a long, convoluted history,·and I haven't been able to get anything out of their current parent company, URS.·
Thanks,
Ross Hironaka
I found a cheap brushed DC·mystery motor a few weeks ago at a local·surplus store.· I·can't find a datasheet for it.· I was hoping someone could point me to specs on this motor or at least hazard a guess as to what voltage it was designed to run at.· Some particulars:
Torque Systems Incorporated
An EG&G Rotron Co.
Waltham, MA USA
Model No. MT-2015-017U4G10
Dual motor shafts, 1/4" dia.
Motor diameter: 2.02"
Motor case length: 5 3/4"
The motor is·labeled "PM Field DC Servo Motor" and has one of those ancient DC generators as a speed output (pretty much a 2nd brushed motor going along for the ride).· I ran·the motor·at various voltages, measured the rpm with an external tachometer, and·measured the·voltage from the·generator.··I've never played with one of these before, and·I was·(literally) shocked at the results.··At 45.8 VDC to the motor (the highest the DC power supply I'm using·can go), the motor·hit 7414 rpm, and the output of the DC generator was 102 Volts!· Yowza!· (Here I was expecting something like 5-12V.)
Anyone familiar with this era of technology have an idea of what this motor is supposed to be running at?· At no load I measure the following:
3773 rpm @ 24.0 V, ~0.28 A, Vgenerator = 52.5 V
5767 rpm @ 36.0 V, ~0.30 A, Vgenerator = 79.4 V
7414 rpm @ 45.8V, ~0.30 A, Vgenerator = 102.4 V
At stall, it pulls about 3.5 A @ 24 V.· (I wimped out on higher voltages.)
It's not clear to me what voltage this motor was designed for.· If anyone can point me to specs on it, I'd greatly appreciate it.· I haven't had any luck searching the web.· EG&G evidently has a long, convoluted history,·and I haven't been able to get anything out of their current parent company, URS.·
Thanks,
Ross Hironaka
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I would love to change the world, but they won't give me the source code
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I spent a minute looking at my own code by accident. I was thinking "What the heck is this guy doing?"