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The hysteresis thresholds for switching (specified as B OP and B RP) categorize digital Hall ICs as either unipolar switches, [9] omnipolar switches, [10] or bipolar switches, [11] which may sometimes be called latches. [12] Unipolar (e.g., A3144) [13] refers to having switching thresholds in only one polarity of the magnetic field. Omnipolar ...
A passive oscilloscope probe with a switch in the probe handle that selects 1× or 10× attenuation. To minimize loading, attenuator probes (e.g., 10× probes) are used. A typical probe uses a 9 megohm series resistor shunted by a low-value capacitor to make an RC compensated divider with the cable capacitance and scope input.
Four-point measurement of resistance between voltage sense connections 2 and 3. Current is supplied via force connections 1 and 4. In electrical engineering, four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements ...
(The units of R H are usually expressed as m 3 /C, or Ω·cm/G, or other variants.) As a result, the Hall effect is very useful as a means to measure either the carrier density or the magnetic field. As a result, the Hall effect is very useful as a means to measure either the carrier density or the magnetic field.
Principle of vibration point probe. These detect levels of very fine powders (bulk density: 0.02–0.2 g/cm 3), fine powders (bulk density: 0.2–0.5 g/cm 3), and granular solids (bulk density: 0.5 g/cm 3 or greater). With proper selection of vibration frequency and suitable sensitivity adjustments, they can also sense the level of highly ...
The basic concept of the third state, high impedance (Hi-Z), is to effectively remove the device's influence from the rest of the circuit. If more than one device is electrically connected to another device, putting an output into the Hi-Z state is often used to prevent short circuits, or one device driving high (logical 1) against another device driving low (logical 0).
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Warranty for these is 3Com Limited Lifetime (up to five years after product is discontinued) with Next Business Day Advanced Hardware Replacement. Covers unit, power supply and fan. 90-day phone support. Lifetime access to software updates. Switch 5500G - Gigabit. Stackable, 24 or 48 Gb ports including 4 Dual Personality Ports (2 × Gb or SFPs ...
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