Momentary Circuits

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stf5060

New Member

• Oct 17, 2011

• #21

Well 47 and 20,000 Kohms is just to get 1 second. I just think 20k kohm would be hard to find because it is so big
And if I need ~10 seconds for one of the others the resistor will have to be huge

 

K

KMoffett

Well-Known Member

• Oct 17, 2011

• #22

Were did "20,000K" come from? Should be 20KΩ or 20,000Ω But 22K is a more common value.

Ken

 

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stf5060

New Member

• Oct 17, 2011

• #23

ah never mind, I was misreading the calculator. I thought it was saying that it was giving values in k ohms. But that sounds good, I am going to order tonight and get started. Thank you so much for all your help!

 

S

stf5060

New Member

• Oct 18, 2011

• #24

I'm having a little trouble finding the IRF150, is this the correct part? https://www.newark.com/jsp/search/productdetail.jsp?SKU=77C5971&CMP=AFC-GB100000001

 

K

KMoffett

Well-Known Member

• Oct 18, 2011

• #25

That was probably overkill. This will work for the solenoids:https://www.radioshack.com/product/index.jsp?productId=2062618

I can't find how much current your motor draws.

Ken

 

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stf5060

New Member

• Oct 18, 2011

• #26

The power supply for the motor is 12 V 100mA

 

K

KMoffett

Well-Known Member

• Oct 18, 2011

• #27

Then the MOSFET from Radio Shack will work.

Ken

 

S

stf5060

New Member

• Oct 18, 2011

• #28

Great, one last question, would a NE555 work with the same set up? Or should I just get some LMC555's?

 

K

KMoffett

Well-Known Member

• Oct 18, 2011

• #29

It should.

Ken