Frequency dividing circuit of variable frequency dividing ratio

Details Frequency dividing circuit of variable frequency dividing ratio Frequency dividing circuit of variable frequency dividing ratio

1978-03-28

1980-09-16

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 51, 328152, 307224R, 368201, H03K 2136, H03K 2106

Patent

active

042232686

ABSTRACT:
A frequency dividing circuit for dividing an input signal provided from a signal source at a selected dividing ratio includes first and second cascade-connected frequency dividers with signal controlling gates connected between the signal source and the first frequency divider, between the first and second frequency dividers, and between the signal source and the gates connected between the first and second frequency dividers. The signal controlling gates may be selectively controlled by a control switch to define a first signal path that includes both the first and second frequency dividers to effectively divide the input signal by both frequency dividers or a second signal path that includes only the second frequency divider to effectively divide the input signal by the second frequency divider only. The circuit includes input amplifiers which may be connected to various signal sources including signal sources that employ crystal oscillators, RC oscillators, and other types of oscillating circuits.

REFERENCES:
patent: 3202837 (1965-08-01), Baracket
patent: 3263174 (1966-07-01), Bjorkman et al.
patent: 3456200 (1969-07-01), Bos
patent: 4068462 (1978-01-01), Duff et al.
patent: 4084082 (1978-04-01), Alfke

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