Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1986-04-04
1987-08-11
Wong, Peter S.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323366, 323907, 73204, 340606, G05F 146, G01F 168
Patent
active
046864504
ABSTRACT:
A fluid flow sensor especially adapted for use in solid state electronic system. The sensor employs a heated thermistor in a first sensing network with a temperature compensation means, the two being connected in common to a sensor point. A second network includes a threshold adjusting means and a diode power supply fluctation circuit connected to a threshold point. The two networks are connected in a bridge circuit across a power supply. The thermistor responds to temperature changes associated with air flow changes to produce a change in circuit condition at the sensor point relative to the threshold point. A utility circuit responds to these changes in circuit condition to provide a desired response. The compensation network includes a plurality of diodes arranged to approximate the response of the heated thermistor to changes in power supply voltage such that the voltage at the threshold point closely tracks the voltage at the sensor point in response to any such changes. This minimizes the utility circuit responding to the changes in bridge circuit conditions caused by power supply fluctuations rather than by changes in air flow velocity.
REFERENCES:
patent: 3233109 (1966-02-01), Byles et al.
patent: 3258760 (1966-06-01), Carlson et al.
patent: 3316902 (1967-05-01), Winchel et al.
patent: 3393328 (1968-07-01), Meadows et al.
patent: 3641819 (1972-02-01), Kendrick
patent: 3645133 (1972-02-01), Simeth et al.
patent: 3650151 (1972-03-01), Drexel
patent: 3781839 (1973-12-01), Bodge
patent: 3989486 (1976-11-01), Baysinger
patent: 3992940 (1976-11-01), Platzer, Jr.
patent: 4199981 (1980-04-01), Young
patent: 4255968 (1981-03-01), Harpster
patent: 4322970 (1982-04-01), Peter
patent: 4413514 (1983-11-01), Bowman
patent: 4480467 (1984-11-01), Harter et al.
patent: 4501144 (1985-02-01), Higashi et al.
General Signal Corporation
Hubbard Robert R.
Kleinman Milton E.
Wong Peter S.
LandOfFree
Fluid flow sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluid flow sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid flow sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-404757