Abstract
1. Total noise in general consists of two components: low frequency thermal noise between nodes 0 and 2 (the first term in Eq. (1)) and tube noise at frequencyωc (third and fourth terms in Eq. (2)). All remaining noise components are small enough to be neglected. 2. Capacitance C9 has considerable effect on the signal/noise ratio. To raise the signal/noise ratio, C9 must be decreased, C8 must be chosen equal to C9, g235 must be reduced, andωc must be raised. The condition C8=C9 is quite different from the recommendation current in the literature that C8=C5. 3. The relative advantage in the signal/noise ratio obtained by increasingωc increases with an expansion of the system pass band.
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