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A circuit that forces I C1 and I C2 to have a fixed N:1 ratio, [2] gives the relationship: = An electronic circuit, such as the Brokaw bandgap reference, that measures ΔV BE can therefore be used to calculate the temperature of the diode. The result remains valid up to about 200 °C to 250 °C, when leakage currents become large enough to ...
The integrated circuit sensor may come in a variety of interfaces — analogue or digital; for digital, these could be Serial Peripheral Interface, SMBus/I 2 C or 1-Wire.. In OpenBSD, many of the I 2 C temperature sensors from the below list have been supported and are accessible through the generalised hardware sensors framework [3] since OpenBSD 3.9 (2006), [4] [5]: §6.1 which has also ...
An NTC is commonly used as a temperature sensor, or in series with a circuit as an inrush current limiter. With PTC thermistors, resistance increases as temperature rises; usually because of increased thermal lattice agitations, particularly those of impurities and imperfections. PTC thermistors are commonly installed in series with a circuit ...
The Design of Band-Gap Reference Circuits: Trials and Tribulations — Robert Pease, National Semiconductor (In "The Best of Bob Pease", page 286, shows Brokaw cell in Figure 3) ECE 327: LM317 Bandgap Voltage Reference Example — Brief explanation of the temperature-independent bandgap reference circuit within the LM317. The circuit is nearly ...
Although silicon's (Si) band gap at 0 K is technically 1.165 eV, the circuit essentially linearly extrapolates the bandgap–temperature curve [7] to determine a slightly higher but precise reference around 1.2–1.3 V (the specific value depends on the particular technology and circuit design); the remaining voltage change over the operating ...
Distributed temperature sensing systems (DTS) are optoelectronic devices which measure temperatures by means of optical fibres functioning as linear sensors. Temperatures are recorded along the optical sensor cable, thus not at points, but as a continuous profile. A high accuracy of temperature determination is achieved over great distances.
A thermocouple, also known as a "thermoelectrical thermometer", is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction.A thermocouple produces a temperature-dependent voltage as a result of the Seebeck effect, and this voltage can be interpreted to measure temperature.
The following is a list of LM-series integrated circuits. ... Temperature sensor, 2.5 °C accuracy [85] ... Historical Design Books.
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