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1Steveo said:I cannot figure what I need to change to get the Optotriac to turn on.
This circuit should detect a Rapid change in light! I can use a pic micro's interrupt and it see the change, But it will not trigger the opto.
Any Ideas?
Steve
1Steveo said:I shorted out R6 still the same. With the opto removed the pic set to rising edge trigger, the opamp will trigger the micro. But it will not drive the OptoTriac are give a change on the interrupt pin with the opto installed.
1Steveo said:He is stating the the circuit is base around the photodiode D1, which is operated in "Photovoltaic mode"
steve
audioguru said:Look at figure 10 in the datasheet for the opamp. It can give only about 2mA (this is typical, it could be less) into the opto with a 3V supply. Even the expensive, rare and sensitive opto needs much more.
A poor choice of an opamp or a supply voltage.