Semiconductor diode temperature sensing device

Details Semiconductor diode temperature sensing device Semiconductor diode temperature sensing device

1975-10-28

1976-12-07

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92ST, 235 92R, 73362SC, G06M 308, G01K 700

Patent

active

039964515

ABSTRACT:
A temperature sensing device is disclosed in which the temperature sensing element is a semiconductor diode. The reference supply current for the diode is derived from an offset voltage regulator in such a way that power source fluctuations appear as common mode inputs to an operational amplifier. The operational amplifier controls a voltage controlled oscillator. The output pulses of the oscillator are counted over periodic time intervals of predetermined length to produce periodic counts which correlate to temperature. The device is designed in the preferred embodiment for use on commercial alternating current power lines where the length of timing for temperature sensing, the interval between readings and switching between multiple sensors is controlled by the power line frequency.

REFERENCES:
patent: 2828468 (1958-03-01), Ball et al.
patent: 3426183 (1969-02-01), Walsh
patent: 3724534 (1973-04-01), Weatherston
patent: 3872728 (1975-03-01), Joyce et al.

Affiliated with

Also associated with

Rating

Semiconductor diode temperature sensing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor diode temperature sensing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor diode temperature sensing device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-380995