AMPLITUDE ANALYZER WITH LOGARITHMIC CONVERSION
ABS>An amplitude analyzer is described which is designated to work with a proportional counter in a magnetic spectrometer for cosmic particles. Due to logarithmic con version of the pulse amplitude into time duration, measured by counting the number of cycles of a pulsemodulated generator, the relative error of measurement of the signal value is constant over the whole range of the measured impulses and the absolute accuracy of small signals is higher than for an analyzer having linear conversion. A circuit of the equipment is given together with theoreticai waveforms. The input signal is gated and a capacitor is charged up to the amplitude of the pulse. After the gate, the capacitor discharges on a fixed time constant. The discharge is used to form a rectangular pulse, the duration of which is proportional to the logarithm of the input signal amplitude. This rectanngular pulse modulates a 20 kc/s oscillator and the oscillations occurring during the duration of the rectangular pulse are squared and counted. (TCO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-12-010843
- OSTI ID:
- 4842656
- Journal Information:
- Pribory i Tekh. Ekspt., Journal Name: Pribory i Tekh. Ekspt. Vol. Vol: No. 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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