| ??? 03/07/06 05:17 Modified: 03/07/06 05:20 Read: times |
#111471 - What micro do you use. Responding to: ???'s previous message |
It seems your micro remains in reset state &/or waiting for ISP state for that initial 0.5s period. In this state all port pins are high and software hasnt yet taken control. This time depends on micro and supervisor. My supervisor assert a reset of 100ms keeping micros in reset state for 100ms & my P89V51RD2 after getting reset waits for ISP command on UART for another 400ms after reset. This can cause that 0.5s turn on.
From the symptoms it appear that your hardware is such that port pin high turns your triac on causing that initial 0.5s turn on period. Usually I use logic low turn on so that such situations can be avoided. In this way. Micro port pin ---> BC327 [ PnP ] ---> MOC3041/21 ---> Triac Regards, Prahlad Purohit |
