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chapter 2 - UniMAP Portal
chapter 2 - UniMAP Portal

... with the voltmeter connected. Therefore, the voltage across the component is less whenever the voltmeter is connected.  The decrease in voltage may be negligible or it may be appreciable, depending on the sensitivity of the voltmeter being used.  This effect is called voltmeter loading. The result ...
FSB50250UTD Motion SPM 5 Series ®
FSB50250UTD Motion SPM 5 Series ®

... Figure 3. Recommended MCU Interface and Bootstrap Circuit with Parameters 3rd Notes: 1. Parameters for bootstrap circuit elements are dependent on PWM algorithm. For 15 kHz of switching frequency, typical example of parameters is shown above. 2. RC-coupling (R5 and C5) and C4 at each input of Motion ...
Press Release
Press Release

... variety of options allow customers to create solutions that precisely match the application requirements. ...
Oscilloscope and function generator
Oscilloscope and function generator

... (A/D converter). Details of this conversion process will be treated in a separate experiment “Data Acquisition and processing with the PC”. For this reason, only some basic terminology will be explained in the following. The conversion analogue → digital does not happen continuously, but at discrete ...
(b).
(b).

IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.
IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.

Problem Set 10
Problem Set 10

worksheet - cloudfront.net
worksheet - cloudfront.net

... iii. On the diagram above, draw arrows to clearly indicate the direction of the electric field between the plates. iv. Determine the magnitude of the electric field in each of the spaces between the plates and the copper block. ...
3-Way Solenoid
3-Way Solenoid

AD8203 High Common-Mode Voltage, Single-Supply
AD8203 High Common-Mode Voltage, Single-Supply

... 2/05—Rev. 0 to Rev. A Changes to Specifications Table...................................................... 3 Changes to Caption on Figure 6 and Figure 8 .............................. 6 Changes to Figure 12........................................................................ 7 Added Figure 14 to ...
ELGProject - School of Electrical Engineering and Computer
ELGProject - School of Electrical Engineering and Computer

... Kirchhoff’s second law states that the algebraic sum of voltage drops around a closed circuit is zero. After the switch is closed we have ...
Installation Instructions
Installation Instructions

STGP19NC60SD
STGP19NC60SD

... STGP19NC60SD 20 A, 600 V fast IGBT with Ultrafast diode ...
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Product Data

... AMPERE MELTING I t 1 FUSE (Fig A) 2 FUSES IN SERIES ...
Chapter 28
Chapter 28

... Power in an AC Circuit • No power losses are associated with pure capacitors and pure inductors in an AC circuit • In a capacitor, during 1/2 of a cycle energy is stored and during the other half the energy is returned to the circuit • In an inductor, the source does work against the back emf of th ...
Tech Brief 3 - pro dg systems
Tech Brief 3 - pro dg systems

Evaluate:  MAX8530/MAX8531 MAX8530/MAX8531 Evaluation Kit General Description Features
Evaluate: MAX8530/MAX8531 MAX8530/MAX8531 Evaluation Kit General Description Features

... voltages (2.85V and 2.60V) at 200mA and 150mA. A MAX8530 in a 6-pin UCSP package is used for this circuit. PC board pads for the SHDN signal and the RESET signal are provided on the circuit to interface with an external controller. The right circuit (MAX8531) provides two fixed output voltages (2.85 ...
Internal Resistance and Resistivity in DC Circuits
Internal Resistance and Resistivity in DC Circuits

power point for Chapter 23
power point for Chapter 23

Lecture 1 (2)
Lecture 1 (2)

Bourns Technology Enables Efficient and Compact DC
Bourns Technology Enables Efficient and Compact DC

... There are several styles of DC-DC converters including buck, boost, buck-boost, and Sepic. Each uses five main components including a diode (D), inductor (L), resistor (R), transistor (Q), and output filter capacitor (C) as shown in Figures 1-4. The transistor is switched on and off at a fixed rate, ...
Solids and Semiconductors
Solids and Semiconductors

... circuit i.e collector emitter circuit is reverse biased so the current flows through D 2 only. Q3. What is a solar cell and where is it used? Ans3. When P-region or N-region of P-N junction diode is made very thin [incident energy is not greatly absorbed] the junction diode is called solar cell. The ...
A. current.
A. current.

... Series circuits • Characteristics of series circuit (continued): 4. The total voltage impressed across a series circuit divides among the individual electrical devices in the circuit so that the sum of the “voltage drops” across the resistance of each individual device is equal to the total voltage ...
Series Compensation on Medium Voltage Radial Systems
Series Compensation on Medium Voltage Radial Systems

... solved by the SCB application. Emphasizes that for subtransmission systems (from 69kV until 138kV) the analysis is similar. Although the experiences and studies of series compensation in distribution feeders had origin in decade of 20’s, where the first systems were implemented, it still demands ref ...
23 - Cardinal Newman High School
23 - Cardinal Newman High School

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Resistive opto-isolator



Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.
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