Subject	Yes, it is a PWM circuit.
Posted by	DVDBURN (MD) on May 15, 2014 at 7:11 PM
	This message has been viewed 339 times.
In Reply To	Re: Some more info on the FPC operation. posted by Dallas DamonZ on May 15, 2014 at 08:25 AM
Message	I cleared up the display a bit and my friend at work pointed out that I placed the markers in the wrong spot. Anytime you measure the voltage in a high current pulsed circuit you're going to see a slope in the trailing voltage drop due to capacitors and such. You're not going to see a sudden drop in voltage. Here is a PDF showing a PWM circuit that is very close to how the FPC is designed. The FPC uses two Mitsubishi 5223 comparators to create the PWM circuit. One as an oscillator and the other as the comparator/driver. The FPC is a pulse width modulated circuit although it's a bit crude. [ http://www.maximusdvd.com/mytwinturbo/tech/fpc/New-FPC/pwmhp75.pdf ] Here are pictures of the cleaned up drive signals "at" the motor. Low speed. Medium speed. www.mytwinturbo.com Nissan Data Voice - The first Nissan diagnostic software with a voice! Nissan Data Voice on YouTube Download my Nissan 300ZX Vin/Model Lookup.
Follow Ups	Some more info on the FPC operation. - DVDBURN (MD) 00:21:03 05/15/14 Cool. (n/m) - Boosted1 06:09:49 05/15/14 odd it's not constant period with just varying duty cycle - komplexZTT 07:49:18 05/15/14 Re: Some more info on the FPC operation. - Dallas DamonZ 08:25:48 05/15/14 You're correct - -Grimm- 09:53:32 05/15/14 Then perhaps there could be some validity to inrush current - maglito 15:59:08 05/15/14 what -- you don't drive the Z every day ??? Hi Mags .. (n/m) - The Devils Z 17:21:45 05/15/14 It always looks good on paper doesn't it :) (n/m) - DVDBURN (MD) 02:05:18 05/16/14 get my email? - genic 14:20:04 05/15/14 Yes, it is a PWM circuit. - DVDBURN (MD) 19:11:20 05/15/14 wanting v1.2 more an more.. - genic 01:32:15 05/16/14 OK so this confirms it's PWM. - DVDBURN (MD) 01:58:49 05/16/14 get my email? (n/m) - genic 14:17:32 05/15/14
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