if ur drving a 2400W with a 60W triac ur gne there itself..
what is the power rating of the triac?
alok


> -----Original Message-----
> From: Peter L. Peres [SMTP:plp@ACTCOM.CO.IL]
> Sent: Saturday, January 27, 2001 2:34 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      [PIC]: 2.5KW Load
>
> Your triac probably develops about 5V x 12A ~= 60W and should have an
> appropriate heatsink (large).
>
> No, you cannot make it run cooler otherwise. The only way to make such a
> thing run significantly cooler is to use something other than a triac for
> switching (like a bidirectional power MOSFET module). This will be more
> expensive than a triac. The minimum voltage drop across an open triac is
> 1.2Volts, but this is a theoretical value (if you drive the triac hard
> enough using dc the voltage could be 0.6V at least on one half period -
> but that does not count). Even so, the power dissipated would be ~15W.
>
> Peter
>
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