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Today im pretty happy for my tgsl is now working but after i put shield to the coil i was been sad because i cannot reject the ferite anymor..i check the ground balanced pot but its ok..please somebody suggest me what to do?
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So very very annoying..... i removed the shielding of the coil believing it is the reasons but still the GB not working anymore
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It is either because of a change in resonant frequency of Rx coil, or because of increased coil loading. Did you change anything on detector's front end? The front end opamp may be connected in a few ways, and some of them (inverting amp) load the Rx coil more, and that results in more phase shift.Comment
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The only thing i change is the 2 100n resonant cap which in the board placement. I change it with the 15n cap which is in the schematic because i have almost no detection on that two parallel cap..Originally posted by Davor View PostComment
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So you did change front end conditions. I'm not sure what exactly you did.Comment
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