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Forum Index : Electronics : Mosfet help needed

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lew247

Guru

Joined: 23/12/2015
Location: United Kingdom
Posts: 1702

Posted: 07:13am 16 Mar 2016

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I'll admit it's been many years since I got my electronic qualifications, mosfet's weren't around then and the tv's I repaired were b+w not colour.
I've also had brain surgery and my memory recall is pretty rubbish, I hate asking for help but I'm stuck with such a simple thing as this.

What I'm looking for is a simple circuit that will drive a 1A maximum load (thats being overgenerous it only needs maybe 200-300mA) off a 3.3V pic pin

I have 5V available on the board "if needed" but I'd rather keep everything at 3.3v if possible

It's to power a HC-12 433Mhz tx/rx module

Ideally a surface mount part.

Anyone able to help with a simple circuit and mosfet part number please?
Edited by lew247 2016-03-17

Pete Locke
Senior Member

Joined: 26/06/2013
Location: New Zealand
Posts: 182

Posted: 06:18pm 16 Mar 2016

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If you Google 'Using a FET as a switch' there are plenty of examples to choose from.
Cheers
Pete'.

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