P
[email protected]
- Jan 1, 1970
- 0
Can anyone please point me to a web page that has the
schematic of a speed control circuit with these features ?
1. It should be analog, not microprocessor-based. No
tachometer.
2. The motor will be a mains-operated brushed DC type of
1 or 2 hp, with a separate field winding. The load will be
fairly constant, but speed should not be greatly affected
by mains voltage fluctuations.
3. It doesn't have to be super-precise, but should be
somewhat more sophisticated and precise than a typical
drill speed control with an SCR plus four or five passive
components.
4. It should have a good starting torque as the load will
be permanently coupled.
5. Speed control range should be roughly from one-third to
two-thirds of the full rated speed.
6. If possible, I'd like to avoid dedicated speed control
ICs even if they're analog.
I'll probably be able to adapt a good general design to my
particular requirements. I'm not entirely clueless about
the theory, but rather long out of touch with practical
designing. I have searched with Google, but the two dozen
or so results I checked did not have what I need. Thanks
in advance for any help.
schematic of a speed control circuit with these features ?
1. It should be analog, not microprocessor-based. No
tachometer.
2. The motor will be a mains-operated brushed DC type of
1 or 2 hp, with a separate field winding. The load will be
fairly constant, but speed should not be greatly affected
by mains voltage fluctuations.
3. It doesn't have to be super-precise, but should be
somewhat more sophisticated and precise than a typical
drill speed control with an SCR plus four or five passive
components.
4. It should have a good starting torque as the load will
be permanently coupled.
5. Speed control range should be roughly from one-third to
two-thirds of the full rated speed.
6. If possible, I'd like to avoid dedicated speed control
ICs even if they're analog.
I'll probably be able to adapt a good general design to my
particular requirements. I'm not entirely clueless about
the theory, but rather long out of touch with practical
designing. I have searched with Google, but the two dozen
or so results I checked did not have what I need. Thanks
in advance for any help.