Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input current or voltage to output frequency
Patent
1995-06-30
1996-12-17
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input current or voltage to output frequency
327 73, 327 78, 327561, 327513, H03C 306
Patent
active
055857485
ABSTRACT:
In a voltage-frequency converter having an integration circuit for integrating an input voltage signal in positive and negative directions, a first comparator is connected to switch integration direction of the integration circuit and a second comparator is connected to compare an integration output signal and a threshold signal. A delay circuit delays one of rising and falling edges of a second comparator output signal to be used as the threshold signal. The second comparator compares the delayed signal with a reference signal varying in accordance with a temperature and produces a second comparator output signal by which the integrating direction is switched. By the use of the delayed signal and the temperature dependent reference signal, a frequency change in the second comparator output signal caused by response time delays of the comparators is compensated for.
REFERENCES:
patent: 4197442 (1980-04-01), Carlsson et al.
patent: 4256983 (1981-03-01), Griffith et al.
patent: 4390799 (1983-06-01), Schmoock
patent: 4672236 (1987-06-01), Toda et al.
patent: 4720997 (1988-01-01), Doak et al.
patent: 4870262 (1989-09-01), Hasegawa
patent: 4924447 (1990-05-01), Fuji et al.
patent: 5166550 (1992-11-01), Matsubara et al.
patent: 5204631 (1993-04-01), Hobbs
patent: 5350950 (1994-09-01), Inaba et al.
patent: 5495193 (1996-02-01), Nukui
Ban Takao
Yamaguchi Hironao
Callahan Timothy P.
Nippondenso Co. Ltd.
Nu Ton My-Trang
LandOfFree
Voltage-frequency converter circuit with temperature compensatio 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-frequency converter circuit with temperature compensatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage-frequency converter circuit with temperature compensatio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1994242