http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008-12-02T00:44:31-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 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? http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 Shailesh NAYAK Hi, If you use o/p as dimmer then better to go for Opto Triac. which can drive your main Triac. http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 Ved im attaching the datasheet if the moc as well... moc3041-m.pdf http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 Ved 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 http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 sashijoseph Just use a general purpose npn for sinking....sth like this.. http://www.8051projects.net/forum-t9885.html 2008-12-02T00:44:31-08:00 Ved hey thanks man, it worked out just fine