View Single Post
Old 12-16-2019, 12:22 PM   #19
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 3,045
Default Re: Mallory Unilite Distributor HELP requested.

I ran one of thoose units in a racer in the past...and after changing more then a few...and talking to their tech people...i was told to put the resistor in the feed of the module to drop the voltage down to around 10v when running to keep from frying modules.
The module uses the breakerplate as heatsink...if there isnīt enough compound between the module and the breakerplate it dies fast.
And a steelplate isnīt a to good heatsink from start...
Any semiconductor on a heatsink donīt like it to be hotter then that you can put your hand on the heatsink...about 60celsius...at that temperature the junction inside the transistor is just below what it can take.
flatheadmurre is offline   Reply With Quote