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Electricity
Electricity

... A car mechanic measures the Emf of a car battery drawing no current as 12.6 V. When the rear screen heater (resistance 30.0 Ω) is switched on the p.d. produced by the battery drops to 12.0 V (a) What characteristic of the battery causes the voltage drop? (b) What is the term used to describe the dro ...
HMC860LP3E
HMC860LP3E

... Two approaches are recommended to manage the stability of the high-current regulators VR1 and VR4. If only one decoupling capacitor is used at the output, the capacitor series resistance Resr must be between 0.2 Ohm and 2 Ohm to insure stability across all loading conditions. This is shown at output ...
Characterization and Modeling of an Electro-thermal MEMS Structure
Characterization and Modeling of an Electro-thermal MEMS Structure

... the electro-thermal test-MEMS. The testchip was made in TIMA Laboratory and it contains more, basically thermal microsystems. The thermal functional system was fabricated by a combination of bulk micromachining and CMOS technology. The investigated circuit itself was realized on a cantilever which t ...
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The Shunt Regulator
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ZXLB1600 LCD and OLED bias boost converter
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Unit Three - geetaselectronics
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... • You can make music louder when they are used in stereo equipment. • You can amplify the heartbeat by using them in medical cardiographs. • You can use them as comparators in heating systems. • You can use them for Math operations like summing, integration etc. ...
MAX1779 Low-Power Triple-Output TFT LCD DC-DC Converter General Description
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RSM002P03
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... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
FSB50250UTD Motion SPM 5 Series ®
FSB50250UTD Motion SPM 5 Series ®

... Figure 9. Example of Application Circuit 4th Notes: 1. About pin position, refer to Figure 1. 2. RC-coupling (R5 and C5, R4 and C6) and C4 at each input of Motion SPM® 5 product and MCU are useful to prevent improper input signal caused by surge-noise. 3. The voltage-drop across R3 affects the low-s ...
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... Note 3: Short circuits from the output to V+ can cause excessive heating and eventual destruction. The maximum output current is approximately 50 mA. Note 4: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of ...
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... diodes, as well as output current monitoring and protection functions into the WQFN-24L 4x4 package. The RT8809 adopts DCR and RDS(ON) current sensing. Load line voltage positioning (droop) and over-current protection are accomplished through continuous inductor DCR current sensing, while RDS(ON) cu ...
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Meters, Power Supplies and Generators
Meters, Power Supplies and Generators

... total resistance while others give the current required for full scale deflection. As long as the meter draws much less current than the component across which it is connected, you can say that its effect will be small. A better technique is to calculate the error introduced, by the current that fl ...
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Evaluates: MAX1778/MAX1880/MAX1881/MAX1882 MAX1778 Evaluation Kit General Description Features
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... step-up switching regulator, two charge-pump voltageregulator circuits, a VCOM buffer, and a low-drop out linear regulator (LDO). The step-up switching circuit is configured for a +8V output that provides up to 250mA of current from a +3.0V supply. The EV kit can be powered from a +2.7V to +5.5V sup ...
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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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