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So this voltage regulator came from a variable resistor for my 06 Infinity QX56 AC blower motor. I have already replaced the unit with a new one but figured I would try to fix this and have a spare. Well the voltage regulater cracked in half and is somewhat unidentifiable to me.

The only info I can provide about its output is that it should be able to provide a 0 - 5 volt.

cracked voltage regulator

Any help in figuring this out is most appreciated.

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  • \$\begingroup\$ I assume you can't make out the part number on it? \$\endgroup\$
    – Hearth
    Commented May 1, 2017 at 23:44
  • \$\begingroup\$ @Felthry exactly i can see a 55-08 \$\endgroup\$
    – user144078
    Commented May 1, 2017 at 23:45
  • \$\begingroup\$ Are there any recognisable logos visible? \$\endgroup\$
    – Hearth
    Commented May 1, 2017 at 23:48
  • \$\begingroup\$ Even better, can you open up the new one and see what part is in that spot? \$\endgroup\$
    – Hearth
    Commented May 1, 2017 at 23:48
  • \$\begingroup\$ @Felthry no just the beginning of a ph it looks like \$\endgroup\$
    – user144078
    Commented May 1, 2017 at 23:49

1 Answer 1

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Why do you think it's a voltage regulator? Could it be one of these...

mosfet

with a data sheet here. Says its for automotive environments. Would this make any sense?

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  • \$\begingroup\$ Actually i thought maybe a mosfet or possibly something else but in my mind the best thing was the voltage regulator. I think this may be it i will read specs now thank you for this \$\endgroup\$
    – user144078
    Commented May 2, 2017 at 1:16
  • \$\begingroup\$ It may be the pass element of a larger regulator circuit though. \$\endgroup\$
    – Ignacio Vazquez-Abrams
    Commented May 2, 2017 at 1:34
  • \$\begingroup\$ Not only does the part name match perfectly, and the manufacturer's logo, but that seems to be a bead on the gate as well, again suggesting MOSFET not regulator. \$\endgroup\$
    – user133493
    Commented May 2, 2017 at 1:37
  • \$\begingroup\$ I actually just ordered the mosfet from amazon. I will try it then supply a low input voltage to i get an ouput and see what I get. Ill let you know if i fry the circuit or not but I think this is right. Or ill just check the new one before actually putting it in \$\endgroup\$
    – user144078
    Commented May 2, 2017 at 1:55
  • \$\begingroup\$ Keep forgetting to update this. Yes this was the mosfet. I replaced it and now have a spare variable resistor for my truck. Thank you very much \$\endgroup\$
    – user144078
    Commented May 17, 2017 at 5:39

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