Here is the circuit..... What is the motor?

B

b_reagle

New Member

• Aug 11, 2008

• #1

I found this circuit and wanted to know what stepper motor I could use with it.. I do not know what motor(type) I am looking for. Thanks for any direction.

 

Attachments

• stepperckt.jpg

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M

mneary

New Member

• Aug 11, 2008

• #2

unipolar stepper
But you'll need drivers if the motor requires more than about 5 mA.

 

B

b_reagle

New Member

• Aug 11, 2008

• #3

As I am sure most would. Would NPN transistors suffice as drivers?
Thank you.

 

Last edited: Aug 11, 2008

B

b_reagle

New Member

• Aug 11, 2008

• #4

Wow. Kinda pricey... Any suggestions on whare to find a used(salvaged) one? Any key features?
Thanks again.

 

B

b_reagle

New Member

• Aug 11, 2008

• #5

Would this work??


**broken link removed**

 

Mikebits

Well-Known Member

• Aug 11, 2008

• #6

Although a unipolar requires a less complex circuit than a bipolar, it also is slower than its bipolar cousin, requires more windings of wire for same power as bipolar hence "Pricey"

Forget the simple circuit, look into some H-bridge driver chips and use a bipolar step motor.

 

B

b_reagle

New Member

• Aug 11, 2008

• #7

Speed is not real a issue is it. 1/2 turn in 1/2 sec.??

 

B

b_reagle

New Member

• Aug 11, 2008

• #8

When I very first started electronic's my instructor always said to use the K.I.S.S. rule.

 

Last edited: Aug 11, 2008

Mikebits

Well-Known Member

• Aug 11, 2008

• #9

b_reagle said:

Speed is not real a issue is it. 1/2 turn in 1/2 sec.??

Click to expand...

Not really, but I would think price is. Bipolars are much more common and can be had at much more moderate cost

 

B

b_reagle

New Member

• Aug 11, 2008

• #10

Mikebits said:

Bipolars are much more common and can be had at much more moderate cost

Click to expand...

But the circuitry is more $$?

 

Boncuk

New Member

• Aug 11, 2008

• #11

b_reagle said:

But the circuitry is more $$?

Click to expand...

Yes, of course. Yours will be more $$ when finished. That bit of circuit can not drive a stepper motor!

Use the outputs to control a stepper motor driver. There is no stepper motor which can be connected directly to the logic.

You can save $$ not connecting any motor to that circuit. The chips will fry right away.

Boncuk

 

B

b_reagle

New Member

• Aug 11, 2008

• #12

I would have used transistors for drivers, but I will have to do more research on the matter. Do you have any links that would be helpful?

 

Boncuk

New Member

• Aug 12, 2008

• #13

b_reagle said:

I would have used transistors for drivers, but I will have to do more research on the matter. Do you have any links that would be helpful?

Click to expand...

Google "full H-bridges"

Boncuk

 

B

b_reagle

New Member

• Aug 12, 2008

• #14

Is there no H-bridge driver chip that operates at 3vdc(min)?

 

B

b_reagle

New Member

• Aug 12, 2008

• #15

Would this circuit work with 3 vdc?

 

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• stepperckt2.jpg

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