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  #11  
Old 08-01-2015, 12:18 PM
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Duncan (or?), question.

Under what condition would a PWM unit operate at it's highest temperature, when the output is 100% (ie, functioning like straight through wiring) or when it's reduced to it's lowest design level?
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Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
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  #12  
Old 08-01-2015, 07:52 PM
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Typically when it is reduced.
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  #13  
Old 08-01-2015, 08:56 PM
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Originally Posted by DNFXDLI View Post
Typically when it is reduced.
To the maximum that the device will reduce it to? Midway? Me asks because, I have an idea how to test and determine operating temp, and to some extent, what the upper tend temp might be.
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-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
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  #14  
Old 08-01-2015, 09:43 PM
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Quote:
Originally Posted by CowboyBilly9Mile View Post
To the maximum that the device will reduce it to? Midway? Me asks because, I have an idea how to test and determine operating temp, and to some extent, what the upper tend temp might be.
Typically in general...how do you like that , lowest setting should produce the most heat...but it could vary depending on the particular design...sorry I'm not more help.
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  #15  
Old 09-07-2015, 12:40 PM
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Quote:
Originally Posted by CowboyBilly9Mile View Post
Duncan (or?), question.

Under what condition would a PWM unit operate at it's highest temperature, when the output is 100% (ie, functioning like straight through wiring) or when it's reduced to it's lowest design level?
Quote:
Originally Posted by DNFXDLI View Post
Typically when it is reduced.
Bench testing yesterday as proven this to be true.

------------------------------------------------------------------

Quote:
Originally Posted by CowboyBilly9Mile View Post
To the maximum that the device will reduce it to? Midway? Me asks because, I have an idea how to test and determine operating temp, and to some extent, what the upper tend temp might be.
Quote:
Originally Posted by DNFXDLI View Post
Typically in general...how do you like that , lowest setting should produce the most heat...but it could vary depending on the particular design........
Again, bench testing yesterday demonstrated that the lowest fan speed (and PWM output) and 2/3 of max fan speed (and PWM output, ie, fan ~ lo lo med low) have about the same effect on heat generated by the PWM unit which is the most heat. The temp increase is also somewhat rapid under these operating conditions.

---------------------------------

Quote:
Originally Posted by DNFXDLI View Post
...sorry I'm not more help.
I wouldn't be so sure of that bud.
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
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