JFET/MOSFET and IR LED control

Thread Starter

leonhart88

Joined Feb 23, 2007
118
OK well I realized I should have read the MOSFET data sheet in more detail. I couldn't find any drivers @ 3V that would turn on fast enough, they all have delays which would take too long for the short pulses I am using.

I took a look at my MOSFET datasheet (FDN357N), and at 3V the resistance is around 0.2 ohms. That's still pretty low and I think it should be OK. So what I plan to do is just use a CMOS inverter (not gate), and put that signal straight into the FET gate.

Hopefully will work. Thanks again for the help and I will report back if it's working (or not working).
 
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