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Old 17th Sep 2006, 5:48 pm   #12
jim_beacon
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Default Re: 807 power amp #1

Quote:
Originally Posted by ronbryan View Post
Jim

I make the reactance of a 0.47uF capacitor equal to 677 ohms at 500Hz. This is not really comparable with the phase splitter 1M2 inter-grid resistor, so phase shifts due to the CR network at this frequency are small (<<1 degree).

Even at 50Hz, its reactance is 6k7 ohms, which is several orders of magnitude smaller than 1M2 and the phase shift of the network is less than a degree.

Ron
Yes, but it is still there, and for the sake of a couple of components, it can be removed. As I said, with 0.47uF it works, but with a smalller capacitor, you could run into problems.

Having said that, with the music Adi plays, he may prefer to put in a smaller cap

Jim.
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