Are you using the exact opamp that is called for in the article that you linked to earlier?yes.....that correct...the sender is worked but no answer from the receiver
What procedure are you using to set the potentiometer?
hgmjr
Are you using the exact opamp that is called for in the article that you linked to earlier?yes.....that correct...the sender is worked but no answer from the receiver
yes i use the LM358 op-amp........Are you using the exact opamp that is called for in the article that you linked to earlier?
What procedure are you using to set the potentiometer?
hgmjr
That is correct.oh i understand.....i turn the potentiometer untill the LED in the output is deinergized...
This section in the article on the circuit tells you:ok i set the potentiometer...thats what you want??
hgmjrYou will have to adjust the variable resistor (POT.) R8 so the the voltage at the positive input of the Op-Amp (pin No. 5) would be somewhere near 1.6 Volt. if you understand the functioning of Op-Amps, you will notice that the output will go High when the volt at the cathode of D1 drops under 1.6. So the output will be High when IR light is detected, which is the purpose of the receiver.
by Duane Benson
by Aaron Carman
by Aaron Carman