Abstract
The transient response of a direct current amplifier to a step function input current, is compared with its response to a spurious charge suddenly induced on the capacitance across the grid of the first valve. The behaviour of circuits consisting of simple RC networks is considered first, and this is then compared with the behaviour of a system containing an amplifier with feedback. It is shown that the problem of improving the signal-to-noise ratio for this case is one of filtering, and can be considered independently of any characteristics introduced into the system by feedback.
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