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very low brightness (ICE Tube)
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Re: very low brightness (ICE Tube)

by adafruit_support_bill on Wed May 07, 2014 2:35 pm

Q3 is a ZVP3306 - https://www.adafruit.com/partfinder/transistors#mosfet

A couple of our more advanced Ice-Tube hacker/customers have been experimenting with some other options for Q3. Some of these appear quite promising, if you want to try. https://forums.adafruit.com/viewtopic.php?f=41&t=51283

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Re: very low brightness (ICE Tube)

by Russell 27 on Wed May 07, 2014 4:25 pm

PNP MODIFICATION.PNG
PNP MODIFICATION.PNG (290.61 KiB) Viewed 349 times


If you have a PNP laying around you might want to try this, in lieu of or waiting on a different Field effect. I had good result with this. I recommend you look at a BS250 or ZVP2110A as an alternative.
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Re: very low brightness (ICE Tube)

by adafruit_support_bill on Wed May 07, 2014 4:49 pm

Thanks Russell27. I was hoping you or Jarchie would chime in :)

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Please be positive and constructive with your questions and comments.