Discussion in "Project Addition or Changes" started by    Arpit    Nov 15, 2006.
Wed Nov 15 2006, 09:56 pm
Please check the circuit for CONTROLLING A 100W HEATER using AT89C51.
its a 100 watt heater i want to controll using pwm of AT89C51 (pins T0, T1).
the SCRs used are 2P4M.
check out it and reply please.

the circuits are attached.

 tienduhieu like this.
Tags controlling heater with 8051heat control with 8051100W heater with 8051
Thu Nov 16 2006, 04:37 pm
do u want just the switching or something else too?
 tienduhieu like this.
Thu Nov 16 2006, 04:42 pm
i wanna have just switching on & off the heater using these thyristors.

 tienduhieu like this.
Thu Nov 16 2006, 04:59 pm
u can do that with a relay will be easy.. i think...
connect the heater plug to the relay. and switch using controller. that easier i think.
 tienduhieu like this.
Wed Jun 20 2007, 07:17 pm
yes this can be done by using a single relay only ..no need to use SCR
 tienduhieu like this.
Wed Jun 20 2007, 11:00 pm
well.. i got a better idea.. you need not to switch on/off the SCR, better is.. simply control the gate voltage and the o/p voltage automatically gets controlled. and for this purpose use an optocoupler to connect the SCR. this is the easiest way..
 tienduhieu like this.

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