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In Reply to: An interconnect story posted by Bold Eagle on April 30, 2007 at 19:18:57:
The only explanation I can think of involves the extremely high gain of modern opamps(or differential discrete gain stages) that are likely used in the NAD to buffer the inputs. If the interconnect impedance somehow interacts with the gain controlling feedback impedance of the input stage(parasitic resonances etc.) you might see effects like yours. I remember designing a push/pull on/off VFET driver circuit once without understanding the concept of Miller effect that "amplifies" input capacitance. In my design the effect didn't let one VFET turn off before the other turned on creating a momentary direct short between B+ and ground everytime the state changed. Needless to say that was not a good thing.:)
Gary
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Follow Ups
- Random guess - GRH 05:18:33 05/01/07 (9)
- Re: Random guess - Bold Eagle 05:56:45 05/01/07 (8)
- Re: Random guess - Bold Eagle 18:32:03 05/01/07 (7)
- I think your “analog circuit wizard†is on the right track - steal2B 10:37:04 05/03/07 (0)
- Your experience is similar to mine - E-Stat 08:28:39 05/02/07 (0)
- Re: Random guess - GRH 06:09:33 05/02/07 (4)
- Re: Random guess - Bold Eagle 11:07:55 05/02/07 (3)
- Re: Random guess - Crazy Dave 11:49:33 05/02/07 (2)
- Re: Random guess - Bold Eagle 11:54:08 05/02/07 (1)
- Re: Random guess - Crazy Dave 08:09:18 05/03/07 (0)
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