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ExamView - Electic study guide.tst
ExamView - Electic study guide.tst

... 17. When a pathway through which charges can move forms suddenly, ____________________ occurs. 18. The SI unit of electric current is the ____________________. 19. Scientists usually define the direction of current as the direction in which ____________________ charges would flow. 20. Wood, plastic, ...
CAT32 - CMOS White LED Driver
CAT32 - CMOS White LED Driver

... supported over a wide range of input supply voltages from 2 V to 7 V, making the device ideal for battery−powered applications. A high voltage output stage allows up to 4 White LEDs to be driven in series. Series drive provides inherent current matching. LED dimming can be done by using a DC voltage ...
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TRANSISTOR AMPLIFIER - IDC

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2 DIODE CLIPPING and CLAMPING CIRCUITS
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... In this type of clippers, the diode is connected between output terminals. The on/off state of diode directly affects the output voltage. These type of clippers may also have a non-zero threshold voltage by addition of a voltage series with diode. Following figures illustrate the clipping process. ...
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Series and Parallel Circuits
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RF Driven Plasma Lighting: the Next Revolution in Light

... highly mismatched RF loads, certainly during some part of the usage cycle. In the case of gas discharges, for instance, the gas cavity acts as “open circuit” during switch-on. This, in turn, means that without protection or other measures, all of the “injected” RF power reflected back into the final ...
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SNC1D - msamandakeller

... Current Electricity  Definition of current electricity – how is it different from static?  Electric circuits – what are they? Why do we need circuits?  What 4 components are parts of an electric circuit? Which one is optional?  Know the function of each part of the circuit.  Know the difference ...
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Mass Sine 12/800 (230V/50Hz)

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Lecture 10b - inst.eecs.berkeley.edu
Lecture 10b - inst.eecs.berkeley.edu

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Data Sheet (current)
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Circuits Study Guide Note: These questions are not meant to be 100

... and a safety device, called a circuit breaker, opens the circuit, preventing the current flow. Why would the wires connecting the house to the power line overheat when you turn on many appliances? ...
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EE 101 Lab 8 A/D converter and power

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... MCP2551 provides differential transmit and receive capability for the CAN protocol controller and is fully compatible with the ISO-11898 standard, including 24V requirements. It will operate at speeds of up to 1 Mb/s. Typically, each node in a CAN system must have a device to convert the digital sig ...
Physics 517/617 Experiment 4 Transistors - 1 R I
Physics 517/617 Experiment 4 Transistors - 1 R I

... d) The AC input impedance of the transistor is ≈ βrBE (or hferbe ). A typical β is 100. Remember that β = hfe = IC/IB so for 1 mA of collector current the AC input impedance is ≈ (100)(25) = 2500 Ω. e) The DC input impedance of the transistor is ≈ βRE (or hfeRE). A typical value of RE is 1 kΩ. So th ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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