# i want to activate a dc motor via a specific frequency can you help me?

D

#### David

Jan 1, 1970
0
Hi, i want to activate a dc motor via a specific frequency between
50Hz an 1kHz.When we got this specific frequency, i want the motor run
the time this frequency is there.

Do you have any idea how i can make this kind of circuit or any web
site that can help me please?

David

S

#### Seth Koster

Jan 1, 1970
0
Hi, i want to activate a dc motor via a specific frequency between
50Hz an 1kHz.When we got this specific frequency, i want the motor run
the time this frequency is there.

Does it need to be exactly a certain frequency or any frequency in
a range, and if in a range what range would that be? Does it need to
cut off at a high resolution, or can you tolerate the circuit cutting
off the motor at 'about' frequency X (within how many Hz?)?
Depending on your needs, a bandpass filter driving some sort of motor
switch (what kind depends on your output) might do it. More specific
resolution required of the circuit would help.

J

#### JeffM

Jan 1, 1970
0
_______
.-------. .-------. / \
| | | OPTO | | |
---| LM567 |---| TRIAC |---| MOTOR |
| | | | | |
-------' -------' \_______/

J

#### JeffM

Jan 1, 1970
0
Lets try that again.
.. _______
.. .-------. .-------. / \
.. | | | OPTO | | |
..---| LM567 |---|COUPLER|---| MOTOR |
.. | | | | | |
.. -------' -------' \_______/

D

#### David

Jan 1, 1970
0
Thanks for response. the range of frequency i would like to use his
between 50 to 500 hz. the voltage range is the same as audio output on
a computer audio card between 0v to 5v I think.

thanks for the schema but the lm567 is a discontinued part. maybe
they're an alternative to this ic? or a filter can do the same? I want
to adjust between the range of 50hz to 500hz.

thanks for the help

D
Replies
0
Views
929
David
D
Replies
6
Views
713
Replies
3
Views
2K
Replies
7
Views
2K
Replies
14
Views
2K