Search: Posts Made By: jjw
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02-06-2010, 02:14 AM
Replies: 48
Views: 56,596
Posted By jjw

Hi... For the purposes of estimating DC motor...

Hi... For the purposes of estimating DC motor performance, Rm (or terminal resistance) is the motor coil DC resistance... I typically measure this using a constant current source and feeding this...
02-05-2010, 02:22 PM
Replies: 48
Views: 56,596
Posted By jjw

Did anyone think it would have been made in the...

Did anyone think it would have been made in the good old USA?... not likely. Virtually all consumer class electronic manufacturing (and even most "professional" level) has gone offshore. Its a simple...
02-04-2010, 05:32 PM
Replies: 48
Views: 56,596
Posted By jjw

Well, my guess is your numbers are correct......

Well, my guess is your numbers are correct... Looks like you're going to have to measure all your own constants for the HobbyCity motors...

Lack of reliable motor constant data (from the...
02-04-2010, 12:37 AM
Replies: 48
Views: 56,596
Posted By jjw

When I measure my own motor constants, it is...

When I measure my own motor constants, it is usual for me to see numbers slightly different from those that are published... however, the difference you saw in resistance is quite large...

What...
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