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| A simple but fairly accurate test is to back feed them with a known rpm, measure the DC output from the two armature wires. Many older DC servo's, especially the larger sizes were limited to 2000~2500 rpm. So extrapolate the DC required for those rpm from the results of the test. Alternatively you could feed them with a couple of automotive batteries in series and measure the voltage and RPM and calculate the same way. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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