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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: time constants posted by Lew on March 20, 2015 at 07:09:04:
The time constant rule of thumb applies to interstage coupling when those stages are contained within an overall feedback loop. The basic idea behind this is to stagger the RC time constants (or, effectively the Fc) of cascaded gain stages to avoid stacking of phase shift at or near one frequency. IMO, the power supply is not directly involved in this although a high impedance supply may incite the ringing of an inherently unstable design due to susceptibility to outside variation at low frequencies.
I'll look for a schmatic I can edit into here where the components of interest can be highlighted for clarity.
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Follow Ups
- RE: time constants - Steve O 10:47:19 03/20/15 (3)
- RE: time constants - Lew 11:10:21 03/20/15 (2)
- RE: time constants - Steve O 20:04:48 03/20/15 (1)
- RE: time constants - Lew 22:02:54 03/20/15 (0)
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