A unit has been designed to enable a pen recorder to record low frequency waveforms ranging from 20 Hz to 20 KHz, using the technique of Time Sampling. The whole unit has been built quite inexpensively and the components were readily available in the laboratory.
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References
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TrimbleC. R.Hewlett-Packard Journal (April 1968).
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HendeeC. F. and BrownW. B.Philips Tech. Rev., 19, No. 2.
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Sampling Oscilloscope for Statistically Varying Pulses, Rev. Sci. Instr., 28, p. 933 (1957).
