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- Oct 10, 2002
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This is happening for two reasons. Minivan's rails are about 320V and the tubes are heating the heatsinks.
I'd like to recommend to all hybrid builders that, if you are going to use the 3x100V zener string in the PS then sub [Edit]KSC5027 for Q13/Q14 on the amp boards. They are higher wattage devices and will withstand the temperature better. I don't know for sure, but I don't think your SQ will be affected.
I'd like to recommend to all hybrid builders that, if you are going to use the 3x100V zener string in the PS then sub [Edit]KSC5027 for Q13/Q14 on the amp boards. They are higher wattage devices and will withstand the temperature better. I don't know for sure, but I don't think your SQ will be affected.