Mar 22, 2014 #1 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 Hello sir I ve got a link again relating a potentiometer with touch sensing configuration , here s the link **broken link removed** with diagram please check it out , & too tell if this one is suitable for audio signals or we need to modify the given circuit ?????? please comment
Hello sir I ve got a link again relating a potentiometer with touch sensing configuration , here s the link **broken link removed** with diagram please check it out , & too tell if this one is suitable for audio signals or we need to modify the given circuit ?????? please comment
Mar 22, 2014 #2 kam1787 Advanced Member level 3 Joined Jul 5, 2010 Messages 926 Helped 167 Reputation 340 Reaction score 168 Trophy points 1,323 Location English Activity points 5,825 I believe it only gives a [linear] control signal. It, by itself, is not a potentiometer.
Mar 22, 2014 #3 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 kam1787 said: I believe it only gives a [linear] control signal. It, by itself, is not a potentiometer. Click to expand... ya i think same about it , so how to get a proper one in place of above ?
kam1787 said: I believe it only gives a [linear] control signal. It, by itself, is not a potentiometer. Click to expand... ya i think same about it , so how to get a proper one in place of above ?
Mar 23, 2014 #4 kam1787 Advanced Member level 3 Joined Jul 5, 2010 Messages 926 Helped 167 Reputation 340 Reaction score 168 Trophy points 1,323 Location English Activity points 5,825 you could use the output to drive a LED which is directed onto a LDR which forms part of a voltage divider
you could use the output to drive a LED which is directed onto a LDR which forms part of a voltage divider
Mar 23, 2014 #5 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 ya ok & what about that voltage divider ? i am unable to get it for audio signals
Mar 23, 2014 #6 kam1787 Advanced Member level 3 Joined Jul 5, 2010 Messages 926 Helped 167 Reputation 340 Reaction score 168 Trophy points 1,323 Location English Activity points 5,825 its just a resistor voltage divider but with one resistor replaced with the LDR input audio signal >--------------resistor---------------tap------------------LDR-------------ground. tap point is where you get the variable audio output
its just a resistor voltage divider but with one resistor replaced with the LDR input audio signal >--------------resistor---------------tap------------------LDR-------------ground. tap point is where you get the variable audio output
Mar 23, 2014 #7 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 kam1787 said: its just a resistor voltage divider but with one resistor replaced with the LDR input audio signal >--------------resistor---------------tap------------------LDR-------------ground. tap point is where you get the variable audio output Click to expand... ya sure got the point , so which resistor value should i choose at audio in ?
kam1787 said: its just a resistor voltage divider but with one resistor replaced with the LDR input audio signal >--------------resistor---------------tap------------------LDR-------------ground. tap point is where you get the variable audio output Click to expand... ya sure got the point , so which resistor value should i choose at audio in ?
Mar 23, 2014 #8 kam1787 Advanced Member level 3 Joined Jul 5, 2010 Messages 926 Helped 167 Reputation 340 Reaction score 168 Trophy points 1,323 Location English Activity points 5,825 first choose the LDR, as they have different ranges and different max/min values probably a LDR in the lower to middle max/min values would be better
first choose the LDR, as they have different ranges and different max/min values probably a LDR in the lower to middle max/min values would be better