Re: Mosfet Circuit check?
snafflekid said:
Is Q2 gate drive maximum 12V? That is how you are setting it. R4 will adjust the maximum gate drive voltage
Thank you for the response, I guess the gate voltage at 12 will be all right. Below a report on the progress and the problems:
Hi,
So far on a proto board it's more or less...!
1-The voltage from the Arduino is about 5V but as soon as the Opto is plugged into the circuit, it drops to about 1.5v! Why?
2- However, the Opto is still working fine since on the other side of it utilizing a 12v for now, it shows about 12 with Opto inactive and when the Opto kicks in it drops to 12(source) - (1.5 from Arduino with Opto active) = 10.5!!! Why is the Arduino voltage being deducted from the 12v source?
3- The Mosfet is also functionin but sending just 1V to the solenoids!!!???
What am I doing wrong?
Each solenoid after Muliplexing will get to be on for just a couple of seconds every 15 minutes or so, but like every couple of seconds, a solenoid will get activated.
thanks
p.s.
the led doesn't function or maybe at .8v it just not showing? The solenoid does function with .8v but with no strength obviously.
p.s.s.
I am using a 10k and a 5k in series for the R4, that is not the problem or is it?