LED strip: DC, 4W
Mosfet: IRF740 (datasheet)
To Do: Use wall socket (AC) to run DC led strip and also turn it on/off with MOSFET and arduino.
AC to DC is done with rectifier and transformer. So this part is excluded from the diagram.
When I send a LOW signal to Gate, the led strip is still faintly on. I have read about why does this happen(stackexchange link)
What I was wondering is how can I stop this? Will a diode help? Is a MOSFET driver what it needs? Or should I increase the load (a pretty bad hack)?
I know the mosfet in use is not a TTL but the mosfet does turn on at low gate voltages (1.5~2V). I am able to fade the led strip but could not get it to completely turn off using the MOSFET.
Also, not sure if this is a concern or not, but the supply voltage (24v) decreases to 18v when the MOSFET is turned 'off'.
Any help is appreciated. Thank you.