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Subject: Re: Mosfets and rectifiers
Date: Tue, 10 Sep 2002 20:14:51 +0200
NNTP-Posting-Date: Tue, 10 Sep 2002 18:08:55 +0000 (UTC)
X-Mailer: Mozilla 4.78 [en] (Win98; U)
Yes .. you can simply use a 1M resistor.
> Here is a schematic of the basic circuit. The PWM signal is out of a PIC
> processor. U1 is a 7407. The Bridge rectifier power supply only supplies the
> power to the motors thru the mosfets. There are two identical circuits to this
> to control two seperate motors.
> As you will see what I cam up with is very simple. Going to a driver like the
> ICL7667 sounds like a good way to go.
> This is the datasheet for the mosfet
> Another question, the motor driver and PS are seperated from the digital
> control. I have a DB25 connecting the output of 7407 w/pull up resistor to the
> mosfet. If one were to power up the motor driver with no input to mosfet by
> disconnecting cable is that going to be a big problem? If I switch to a MOSFET
> driver then I will use a pull down resistor on the gate of MOSFET. Am I
> thinking correct on this?
> Thanks for all your input already.
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