Patent
Square wave to sine wave converter
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TLDR
In this paper, a square wave-to-sine wave converter with an automatic gain control circuit is presented. But the circuit is not suitable for the use of a SINR shaper.Abstract:
A square wave to sine wave converter of the type which utilizes an integrr, an amplifier and a sine wave shaper in the signal processing operation has an automatic gain control circuit which responds to signal variations both at the output of the integrator and the output of the amplifier to insure a constant amplitude triangular wave at the input of the sine wave shaper as the frequency of the square wave changes.read more
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References
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Patent
Square to sine converter
Harold D. Wiebe,Robert G Wise +1 more
TL;DR: In this paper, an apparatus for converting a square wave signal to a sine wave signal with a fixed predetermined phase relation to the square wave signals is described, where the sine waves are sampled as a function of the square waves and a feedback circuit is provided to produce a correction signal representing the phase relation there between.
Patent
Electronic signal multiplier
Frizzell J,Hulme J +1 more
TL;DR: In this article, a frequency multiplier for frequency variable electronic signals for use with a fluid flow measuring system was proposed, where the generally sinusoidal output signal from a flowmeter is converted to a square wave signal of the same frequency.
Patent
Computerized lighting system
TL;DR: In this paper, an apparatus for converting d.c. current to a cosine wave was described, where a wave shaper filter was used to shape the wave form into that of a sine wave.
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Stable amplitude sine wave generator
TL;DR: In this article, the amplitude correction signal is produced by integrating peaks of the sinusoidal output signal which exceed a reference voltage indicative of desired output signal amplitude, thus controlling the excitation level of the resonant circuit and the amplitude of the sineoidal signal generated thereby.