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Ved
Tue Jun 03 2008, 11:27PM
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i need to trigger a triac using a output pin of the 89c52, but the current is too low to trigger the triac, can anyone suggest a circuit to boost the current?


vedvern
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Shailesh NAYAK
Wed Jun 04 2008, 05:03PM

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Hi,
If you use o/p as dimmer then better to go for Opto Triac. which can drive your main Triac.
Best Regards

Shailesh S. NAYAK
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Ved
Fri Jun 06 2008, 03:18PM
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the triac is used for power control of an immersion heater using different firing angles, im using an moc3041 to trigger the triac, it has an optoisolator but i still need to boost the current for the trigger
vedvern
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Ved
Fri Jun 06 2008, 03:19PM
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im attaching the datasheet if the moc as well...
moc3041-m.pdf
vedvern
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sashijoseph
Sat Jun 07 2008, 04:15AM

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Just use a general purpose npn for sinking....sth like this..



[ Edited Sat Jun 07 2008, 04:19AM ]
Let there be music........
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Ved
Wed Jun 25 2008, 04:17AM
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hey thanks man, it worked out just fine
vedvern
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8051 Microcontroller Projects 8051 AVR tutorials PIC microcontroller, 8051 assembly language programming electronics and communication ECE CSE pdf ebooks library BE final year project ideas Embedded systems