IMPROVEMENTS IN OR RELATING TO VIRTUAL-EARTH AMPLIFIERS
Patent
·
OSTI ID:4783893
A d-c amplifier is designed for use as a differentiating amplifier in reactor period meters. The amplifier includes a feedback resistor connected between input and output for virtual-earth input conditions and is provided with a smoothing circuit comprising a first capacitor connected in series with a second resistor across the feedback resistor. A pair of oppositely poled diodes is connected in parallel between the first capacitor-second resistor junction and the virtualearth potential, so that the first capacitor acts in parallel with the feedback resistor to give a long time constant for smoothing input noise and is connected to the virtual-earth point during input changes to reduce the time constant. Thus, the overshoot of the reactor period indication is reduced. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-030638
- OSTI ID:
- 4783893
- Report Number(s):
- GB 906068
- Country of Publication:
- United Kingdom
- Language:
- English
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