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Design and evaluation of a low thermal electromotive
Design and evaluation of a low thermal electromotive

... Type B standard uncertainties attributed to leakage currents flowing to ground have been reduced in many of the resistance measurement systems at NIST by the use of guard networks.2 Without also guarding the switching of resistors, leakage errors can degrade the accuracy of resistance measurements, ...
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... ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions sho ...
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... Integrated 2:4 TTL Decoder ...
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... Physical Inductor  Inductors are Typically Fabricated by Winding Around a Magnetic (e.g., Iron) Core a LOW Resistance Wire • Applying to the Terminals a TIME VARYING Current Results in a “Back EMF” voltage at the connection terminals ...
Power Module Reliability - Mitsubishi Electric Corporation
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... technology. Typically, for equipment that demands high reliability, a semiconductor device failure rate of 10 to 100 FIT (1 FIT = 1×109/hour)is required. In order to realize that level of reliability, naturally the reliability of the semiconductor must be improved. It is very important to consider t ...
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... During the start-up sequence, when pin MODE is switched from standby to mute, the conditions at the output terminals of the power stage are checked. In the event of a short-circuit at one of the output terminals to VDD or VSS the start-up procedure is interrupted and the system waits for open-circui ...
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... completeness thereof are not guaranteed. In accordance with Crouse-Hinds “Terms and Conditions of Sale,” and since conditions of use are outside our control, the purchaser should determine the suitability of the product for his intended use and assumes all risk and liability whatsoever in connection ...
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... Note that the three capacitors, C1, C2 and C3, must be ‘RF’ types with low loss dielectrics at the frequencies being used. Examples of capacitors with suitable dielectrics include silver mica, polystyrene and ceramic NP0. The inductor, L1, must also be chosen for low RF losses (i.e. high ‘Q’). At th ...
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... What is a 2nd order circuit? A second-order circuit is characterized by a secondorder differential equation. It consists of resistors and the equivalent of two energy storage elements. ...
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... Reducing errors from external sources in a current sensing circuit requires a different approach from the voltage sensing input of the typical high impedance op amp circuit. Leakage can be a significant source of error for highly sensitive log amps, especially at the low end of their range. For exam ...
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... breaker marked “current-limiting” in the feeder circuit, the short-circuit current rating on the line side of the circuit breaker shall be one of the following: a) The short-circuit current rating of the feeder circuit breaker when all of the components in the branch circuit have a shortcircuit curr ...
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... The starting up of voltage across a capacitor is similar to the starting up of current across an inductor. The starting up of current across a capacitor is similar to the starting up of voltage across an inductor. ...
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... Using the PCA9515A enables the system designer to isolate two halves of a bus, thus more devices or longer length can be accommodated. It can also be used to run two buses, one at 5 V and the other at 3.3 V or a 400 kHz and 100 kHz bus, where the 100 kHz bus is isolated when 400 kHz operation of the ...
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... The factory bias setting for the power amp tubes left a lot to be desired. I attributed much of the amps brittleness and lack of warmth to under-biased power tubes. I checked the plate voltage of the amp by removing the power tubes, turning on the amplifier, turning off the standby, and measuring t ...
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... ICAR S.p.A. is synonym of capacitor from 1946, conjugated over its multiple applications. All along ICAR has believed in the quality of its products and in the strength of the International regulations for the achievements of the high performance standards required for capacitor in industrial applic ...
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... [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 ...
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HMC347G8 数据资料DataSheet下载

... The HMC347G8 is a broadband high isolation nonreflective GaAs MESFET SPDT switch in a 8 lead glass/metal (hermetic) surface mount package. Covering DC to 8 GHz, the switch features >42 dB isolation up to 2 GHz and >25 dB isolation up to 8 GHz. The switch operates using complementary negative control ...
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Surface-mount technology



Surface-mount technology (SMT) is a method for producing electronic circuits in which the components are mounted or placed directly onto the surface of printed circuit boards (PCBs). An electronic device so made is called a surface-mount device (SMD). In the industry it has largely replaced the through-hole technology construction method of fitting components with wire leads into holes in the circuit board. Both technologies can be used on the same board for components not suited to surface mounting such as large transformers and heat-sinked power semiconductors.An SMT component is usually smaller than its through-hole counterpart because it has either smaller leads or no leads at all. It may have short pins or leads of various styles, flat contacts, a matrix of solder balls (BGAs), or terminations on the body of the component.
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