On off switch using mosfet?

[Paul Barber]

Hello everyone

I am working on producing a prototype for a new product and I am struggling just wondered if anyone can shed some light on something for me.

I am trying to switch on and off a simple device by using the charge point. I have been advised I can use a standard 3 pole female jack and a mosfet. Where can I get a 3 pole jack like the one in the picture?

Many thanks all

 

[ag273n]

Where can I get a 3 pole jack

there's so many DC jacks available out there - in different shapes and sizes, if you need to plug it to a specific size, you'll need to match it, otherwise if you have freedom to choose on the male and female DC jack sizes, then you can pick any, it'll only need a positive and a negative for it to work.
http://www.ebay.com/sch/i.html?_fro...0.TRC0.H0.XDC+jack.TRS0&_nkw=DC+jack&_sacat=0

on mosfets, you need to choose one that can handle enough current that your motor will draw.. a common one is the IRLZ44N.
http://www.irf.com/product-info/datasheets/data/irlz44n.pdf

 

[AnalogKid]

The jack as described in your schematic is so common it is hard to find one *without* the disconnect switch. If you search for DC power jacks on distributor websites, you will find some with other switch arrangements, including fully isolated switch sections for other uses.

ak

 

[Paul Barber]

Thanks guys, I will look again for the connector I have been looking and ideally wanted a prewired cable on the connector. With regards the mosfet the motor is 80ma so will the IRLZ44N do the job.

Thanks again

 

[AnalogKid]

Yes. Way overkill, but if that's what you have, no problem.

ak