Hello,
I would really appreciate any help on this circuit that I've tried to design (I've attached a copy).
I have biased the +ve input to half the rail voltage, and the output and consequently the -ve input are both also biased to half the rail voltage.
I was hoping the the Xtal would cause voltage fluctuations at the -ve input around half the rail voltage, which would then cause the output to fluctuate either side of half the rail voltage. (I hope that made sense).
However....my circuit doesn't do this. Instead, the two inputs and the output all remain constant at half the rail voltage.
Would anyone be able to point out any glaring (/stupid) mistakes that I've made? Or whether the circuit is just not possible?
Thanks a lot in advance for any help you could give!
I would really appreciate any help on this circuit that I've tried to design (I've attached a copy).
I have biased the +ve input to half the rail voltage, and the output and consequently the -ve input are both also biased to half the rail voltage.
I was hoping the the Xtal would cause voltage fluctuations at the -ve input around half the rail voltage, which would then cause the output to fluctuate either side of half the rail voltage. (I hope that made sense).
However....my circuit doesn't do this. Instead, the two inputs and the output all remain constant at half the rail voltage.
Would anyone be able to point out any glaring (/stupid) mistakes that I've made? Or whether the circuit is just not possible?
Thanks a lot in advance for any help you could give!