Lol...cheap MOSFET?

[locke2121]

Everyone has seen those little Easter chickens that peep when you touch the two rivets on the bottom...has anyone ever torn one apart??

 

[Stosh]

Everyone has seen those little Easter chickens that peep when you touch the two rivets on the bottom...has anyone ever torn one apart??

they're too small to fit a battery into.....

 

[locke2121]

LOL!!! No, I mean is there a MOSFET that we can yank out and use? I doubt it..they don't use alot of power.

 

[Stosh]

I know...sorry...couldn't resist...

without a data sheet for the mosfet, only way to tell is to try one...

 

[locke2121]

Ah..wonder if I can pull it apart without the grandkid knowing lol?

 

[northhar]

You could just wait a bit, they usually tear them apart and you get to pick up the pieces. lol

I think they probaly work like those musical cards just a contact start and stop..

 

[classwife]

Title should read "CHEEP ..."

 

[bstedh]

Title should read "CHEEP ..."

CHEEP-CHEEP Mosfet. =]

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[bstedh]

Just go to the local computer shop and ask for a couple of dead mother boards and you will get several high quality mosfets for free. I have even fo7und a couple of the P channel ones on some. Also some various other usefull components if you can id3ntify them.

Also a good place to find 18650 batts from dead laptops. Life expectancy may vary greatly on these.

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[ScroungerLee]

I have stripped boards from a Roomba, computer PS, motherboards, old sound cards, video cards, broken TiVo, old monitors, treadmill feedback card (not the DC motor controller, that's a different project ), old printers and fax machines, and and and...

 

[Diagasa]

What is a mosfet?
Is it some thing that will result in /facepalm?

 

[Diagasa]

What is a mosfet?
Is it some thing that will result in /facepalm?

 

[bstedh]

You can think of it as a solid state relay. Control large current with a small current. Alows you to use low amperage switches in your mod. Or high speed switching for PWM.

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[slimest]

MOSFETs are cheap. For a few bucks you can buy them without struggling with boards.
irlml6402 | eBay

 

[locke2121]

Basically, it removes the need for a push-button switch. It uses the tiny amount of current that can travel across the tip of your fingers and fires off a PV.

 

[DaveP]

The reason for using a MOSFET, as bstedh and locke2121 said is to remove the current load from the momentary push button switch so that it doesn't fail early. A switch under high current load will arc a tiny bit each time it is pressed and released. Over time, the contacts get pitted and you get switch failure. So, they use a tiny push button switch that supplies a voltage to the gate contact on the MOSFET. The MOSFET then turns on the atomizer.

A MOSFET only takes a tiny current to energize and it can switch high current loads over and over without the issue of contact deterioration like the switch. So, your switch lasts much longer and the atomizer gets full voltage each time (no resistance loss) . Atomizers draw up to several amperes. The push button to switch that load would be bulky and costly.

 

[ScroungerLee]

Yes, MOSFETs and other components are cheap, I wasn't recommending stripping boards. But I am a Scrounger after all

 

[P1NkY]

I have stripped boards from a Roomba, computer PS, motherboards, old sound cards, video cards, broken TiVo, old monitors, treadmill feedback card (not the DC motor controller, that's a different project ), old printers and fax machines, and and and...

Yup. Sounds like my place, alright. Wait. How in the heck did you get inside my house?

 

[ScroungerLee]

Yup. Sounds like my place, alright. Wait. How in the heck did you get inside my house?

You took apart your alarm system for the sensors, remember?