Voltage variable delay circuit

Details Voltage variable delay circuit Voltage variable delay circuit

1991-08-22

1993-07-27

Sikes, William L.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307265, 307601, 307602, 307605, H03K 513, H03K 3017

Patent

active

052313190

ABSTRACT:
A voltage variable delay circuit that provides a relatively constant delay independent of operating voltages, temperatures or processing variations is disclosed. The circuit is particularly suited for delay line or oscillator applications. The relatively constant delay is accomplished by accurately controlling the switching speed of each of the complementary series arranged inverter elements used for the delay line or oscillator. The accurate control is provided by first and second high impedance inverters connected to the gate electrode of series arranged inverters. In the delay line application, two similarly fabricated series arranged inverter elements are placed in parallel. One of the series arranged inverters is used as an operating circuit and the other is used as a reference circuit. A clock signal is used to synchronize the reference circuit with a timing network, and a comparator is used to measure the time difference between the reference circuit and the timing network. The output of the comparator is integrated and used to produce an analog-type control voltage which varies the time delay of both the operating and reference circuits until the reference circuit time delay is equal to that determined by the timing network. Conforming the reference circuit also conforms the operating circuit thereto. In the oscillator application, a synchronizing circuit is also used to produce a variable control voltage that adjusts the oscillator frequency until it is equal to an external measuring synchronizing time base.

REFERENCES:
patent: 4496861 (1985-01-01), Bazes
patent: 4645958 (1987-02-01), Suzuki et al.
patent: 4652778 (1987-03-01), Hosoya et al.
patent: 4700089 (1987-10-01), Fujii et al.
patent: 4710654 (1987-12-01), Saitoh et al.
patent: 4806804 (1989-02-01), O'Leary
patent: 4812687 (1989-03-01), Larson et al.
patent: 4818901 (1989-04-01), Young et al.
patent: 4820943 (1989-04-01), Makino et al.
patent: 4843265 (1989-06-01), Jiang
patent: 4894791 (1990-01-01), Jiang et al.
patent: 4899071 (1990-02-01), Morales
patent: 4922141 (1990-05-01), Lofgren et al.
patent: 5012142 (1991-04-01), Sonntag
patent: 5051630 (1991-09-01), Kogan et al.
patent: 5063311 (1991-11-01), Swapp
patent: 5075570 (1991-12-01), Shewchuck et al.
patent: 5081380 (1992-01-01), Chen
patent: 5118975 (1992-06-01), Hillis et al.
patent: 5192886 (1993-03-01), Wetlaufer

Affiliated with

Also associated with

Rating

Voltage variable delay circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage variable delay circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage variable delay circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2344223