Hello ,
i m trying to make a circuit that basicly generates a square wave and this wave should pass through LED- AİR- FOTODİODE and we have to see that signal from out of the circuit. but i have some questions . if you could help me , i d be very thankful. i attach the circuit . i m using multisim 10.1 .
1- my objective to make this circuit is i want to transmit a any signal with using led and fotodiode. i mean there ll be a short air space between them and led flashes off and fotodiode recieves it and transmit at the other side of the circuit. is it possible ? ( no optocoupler ) i have to do it for real )
2- as you can see in my circuit , lm555 generetas a square wave ( the wave above) . but the problem is i can t correct the voltage level of the signal . i mean i can calibrate frecuency but i can not play with the voltage level except Vpp . but i m not interested in changing Vpp . i want to put it between -5v and 5 volt. how can i do that ?
3- and secondly, the below signal, it s way down from the original signal that enters the opamp. how can i make it rise to the orignal or any level signal that i want ?
these are the questions that i cant find answers. thanks.
i m trying to make a circuit that basicly generates a square wave and this wave should pass through LED- AİR- FOTODİODE and we have to see that signal from out of the circuit. but i have some questions . if you could help me , i d be very thankful. i attach the circuit . i m using multisim 10.1 .
1- my objective to make this circuit is i want to transmit a any signal with using led and fotodiode. i mean there ll be a short air space between them and led flashes off and fotodiode recieves it and transmit at the other side of the circuit. is it possible ? ( no optocoupler ) i have to do it for real )
2- as you can see in my circuit , lm555 generetas a square wave ( the wave above) . but the problem is i can t correct the voltage level of the signal . i mean i can calibrate frecuency but i can not play with the voltage level except Vpp . but i m not interested in changing Vpp . i want to put it between -5v and 5 volt. how can i do that ?
3- and secondly, the below signal, it s way down from the original signal that enters the opamp. how can i make it rise to the orignal or any level signal that i want ?
these are the questions that i cant find answers. thanks.
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