Device for measuring the internal resistance of a linear...

Details Device for measuring the internal resistance of a linear... Device for measuring the internal resistance of a linear...

2005-03-01

2005-03-01

Le, N. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S693000, C324S713000

Reexamination Certificate

active

06861850

ABSTRACT:
A device for measuring the internal resistance (Ris) of a linear lambda probe (S) of an internal combustion engine is disclosed. The device comprises a voltage amplifier (V6) for amplifying an alternating voltage (VOSZ), which declines to the internal resistance (Ris) and which is induced by an alternating current applied to the first probe terminal Vs+. The inventive device also comprises a synchronous demodulator (V7) for rectifying the amplified alternating voltage (VEIN) and a successive filtering whose amplification factor can be switched over with the frequency of the alternating voltage (VOSZ).

REFERENCES:
patent: 4419190 (1983-12-01), Dietz et al.
patent: 4505783 (1985-03-01), Mase et al.
patent: 5091698 (1992-02-01), Grabs
patent: 5106481 (1992-04-01), Rankin et al.
patent: 6073083 (2000-06-01), Schnaibel et al.
patent: 6259259 (2001-07-01), Raffalt et al.
patent: 6763697 (2004-07-01), Bolz
patent: 3117790 (1982-11-01), None
patent: 3835852 (1990-04-01), None
patent: 3836045 (1990-04-01), None
patent: 3903314 (1990-08-01), None
patent: 19636226 (1998-03-01), None
Microelectronics Second Edition, Jakob Millman P.H.D., Arvin Grabel, S.C.D., 1987; PP. 698-702.

Affiliated with

Also associated with

Rating

Device for measuring the internal resistance of a linear... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for measuring the internal resistance of a linear..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for measuring the internal resistance of a linear... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3367511