Circuit arrangement for the digitalization of an angle or rotati

Details Circuit arrangement for the digitalization of an angle or rotati Circuit arrangement for the digitalization of an angle or rotati

1975-02-10

1977-03-29

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, 318661, H03K 1302

Patent

active

040152510

ABSTRACT:
A circuit arrangement for the digitalization of the angle of rotation .phi. of a rotatable device which is operated at fa rotations per second, employing auxiliary voltages modulated with sin .phi. and cos .phi. of a fundamental frequency fo, which with the aid of further circuit elements are converted into a counter pulse train which indicates the angle of rotation, in which n pulses correspond to the angle of rotation of 360.degree.; wherein from two auxiliary voltages is formed a third auxiliary voltage which contains only one of the frequencies (fo+fa) or (fo-fa), which third auxiliary voltage and a comparison voltage of the frequency n.sup.. fo are conducted to a comparator circuit, comprising a D-flip-flop, with the comparison voltage being present at the D-input (preparation input) and the third auxiliary voltage being present at the clock-input, whereby the desired counter pulse train with n.sup.. fa is obtained at the output of the D-flip-flop.

REFERENCES:
patent: 2894256 (1959-07-01), Kronacher
patent: 2933722 (1960-04-01), Steinman
patent: 3377589 (1968-04-01), Materer et al.
patent: 3609569 (1971-09-01), Todd
patent: 3612977 (1971-10-01), Perrett
patent: 3636554 (1972-01-01), Farneth
patent: 3851330 (1974-11-01), Huber
patent: 3914760 (1975-10-01), Logue

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