Variable delay circuit

Details Variable delay circuit Variable delay circuit

1995-02-24

1996-02-27

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327261, H03H 1126

Patent

active

054951976

ABSTRACT:
First and second exclusive-OR gates (hereinafter referred to as EXOR gates) are provided, which are both connected at one input side to a delay input terminal. The other input side of the first EXOR gate is grounded and the other input side of the second EXOR gate is connected to a select signal input terminal. A capacitor is connected between the output side of the first EXOR gate and the output side of the second EXOR gate. The output side of the first EXOR gate is connected to a delay output terminal by way of a buffer which outputs logical levels. The buffer has a threshold value and outputs one or the other binary logical level depending on whether the input thereto is above or below a threshold value.

REFERENCES:
patent: 4694208 (1987-09-01), Szabo et al.
patent: 5185540 (1993-02-01), Boudry
patent: 5283631 (1994-02-01), Koerner et al.
patent: 5294848 (1994-03-01), Kannegundla
patent: 5352945 (1994-10-01), Casper et al.

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