I need help of this complete circuit.

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Hi,
Do you have all 7 opto detectors?, the circuit shows 3, but it requires 7.

Do the LED's 1 thru 7 indicate correctly?

Are the power supply voltages within the range specified?

As you havn't said how is 'dosn't work' its difficult to give a meaningful answer.

Eric
 
ya, i carefully checked the circuit. Instead of 3, i bought 7 of them

my term of doesnt work, is it that will guanrantee its working?
 
It should work as shown. Why you'd want to use this design is another question. For one thing it uses a 40 Watt light bulb. Talk about idle current! I would also think that the melody-buzzer would get annoying after a while.
can anyone tell me how to make the circuit work?
Click to expand...
What does it do right now?
 
xiaobai00 said:
is there possible to change from AC appliances to DC appliances?
Click to expand...

Makes no difference, the loads are switched be relays - just make sure your relays are suitably rated.

And I agree with everyone else, that's an absolutely horrible circuit!.
 
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