Frequency multiplying circuit for an optical encoder

Details Frequency multiplying circuit for an optical encoder Frequency multiplying circuit for an optical encoder

1980-10-30

1982-11-16

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307271, H03B 1900

Patent

active

043596886

ABSTRACT:
A frequency multiplying circuit for producing double frequency sine and cosine output signals sin 2x and cos 2x from sine and cosine input signals sin x and cos x, comprising two multiplier circuits, each having an output e.sub.0 and four inputs a.sub.1, a.sub.2, b.sub.1 and b.sub.2 and being adapted to perform multiplication in accordance with the following relation:

REFERENCES:
patent: 4052626 (1977-10-01), Tuma et al.

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