Hi are there any other techniques a
Hi are there any other techniques a
(OP)
Hi are there any other techniques apart from gears to slow down the rpm of a dc motor> this is to drive a small , low weight shutter . Many thanks in advance .
Tony
Sunclipa
Tony
Sunclipa
RE: Hi are there any other techniques a
TTFN (ta ta for now)
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RE: Hi are there any other techniques a
such as:
https://www.groschopp.com/whitepaper/how-to-use-vf...
in bigger applications, this is fairly common. i have a small milling machine that controls the spindle speed with a VFD controller
RE: Hi are there any other techniques a
DC motors achieve their constant torque range by varying the applied voltage (constant ratio between volt and rpm). Stationary field magnetic strength (i.e., field current) remains constant throughout. For the constant power range, the applied voltage is fixed (at the rated condition) and the field strength is reduced by lowering the field current.
AC motors work similarly. For constant torque, they generally vary the applied line voltage with frequency (a constant ratio). For variable torque, they hold the applied voltage constant and weaken the magnetic strength of the "field".
So
- DC motor. Reduce speed, maintain torque. = > Lower the voltage (linearly).
- AC motor. Reduce speed, maintain torque. = > Lower the voltage AND the frequency (linearly).
Converting energy to motion for more than half a century
RE: Hi are there any other techniques a
ps i labelled myself mechanical because there was no optical engineering option.
thanks again
Sunclipa
RE: Hi are there any other techniques a
Converting energy to motion for more than half a century