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Laboratory Test Analysis of Power Semiconductors
Laboratory Test Analysis of Power Semiconductors

... up diode. This diode reduces together with the resistors R1 and R2 the switching time of the transistor. Besides this the resistors R1 and R2 care for the tail current of the transistor T1 (Ic1 in the off state) not being amplified by the transistor T2. This reduces also the total tail current [3]. ...
Voltage Current and Resistance
Voltage Current and Resistance

B4 Ohm`s Law - CPO Science
B4 Ohm`s Law - CPO Science

... calculate the resistance. As a challenge, ask students if they can figure out which resistor is which by taking only voltage measurements. This can be accomplished by making a series circuit containing both resistors. The one with the higher resistance will have the higher voltage. ...
Specification Status: RELEASED  PolyZen GENERAL DESCRIPTION
Specification Status: RELEASED PolyZen GENERAL DESCRIPTION

... This helps improve output voltage clamping, even when input voltage is high and diode currents are large. An advanced feature of the PolyZen devices is that the Zener diode is thermally coupled to a resistively non-linear, polymer PTC (positive temperature coefficient) substrate. The PTC substrate i ...
Evaluates:  MAX5943A/B/C/D/E MAX5943A Evaluation Kit General Description Features
Evaluates: MAX5943A/B/C/D/E MAX5943A Evaluation Kit General Description Features

... The MAX5943A controller features a programmable current-limit timeout function. If the current-limit fault exceeds the programmed timeout period, the MAX5943A disconnects the input power supply from the load by turning off MOSFETs N1-A and N1-B. The timeout period is programmed by the resistor conne ...
Photoelectric Sensor Terminology
Photoelectric Sensor Terminology

EFL series datasheet
EFL series datasheet

... EFL SERIES Enhanced Floating Hot Deck LVPS With Isolated Digital and Analog I/O The EFL Series of floating-hot-deck, low-voltage power supplies offers an integrated solution for systems requiring LV power & controls with high-voltage isolation. Combining a highly isolated, DC-to-DC, multi-output low ...
Bioelectric Amplifiers
Bioelectric Amplifiers

... Noise: normally is the thermal noise generated in resistances and semiconductors devices. Drift: change in output signal voltage caused by change in operating temperature. High input impedance: 107 to 1012 Ω and it should be at least an order of magnitude high than the source impedance. Integrat ...
FIN1019 3.3V LVDS High Speed Differential Driver/Receiver
FIN1019 3.3V LVDS High Speed Differential Driver/Receiver

GET 130 Lab 5: Electrical Engineering Technology
GET 130 Lab 5: Electrical Engineering Technology

... alligator clip ends of the leads together to cause a short circuit across the power supply. Since our power supplies are short-circuit protected, this will not cause damage to the equipment, but will instead allow the maximum current to be specified using the current knob on the power supply. Turn t ...
Short Circuit Protection Short Circuit Protection
Short Circuit Protection Short Circuit Protection

... Any accidental short between the output pin and the GND pin of the FunctionPAK could cause permanent damage to the device. Whether that short is the result of component fatigue, accumulation of dust or debris over time, or accidental shorting by technicians during system check-out, the results would ...
V/F Converter ICs Handle Frequency-to-Voltage Needs
V/F Converter ICs Handle Frequency-to-Voltage Needs

... Improving the Basic Circuit Further modifications and additions to the basic F/V converter shown in Figure 1 can adapt it to specific performance requirements. Figure 2 shows one such modification, which improves the converter’s nonlinearity to 0.006% typical. Reconsideration of the basic stand-alon ...
FIN1019 3.3V LVDS High Speed Differential Driver/Receiver FI N1019
FIN1019 3.3V LVDS High Speed Differential Driver/Receiver FI N1019

... (either LOW-to-HIGH or HIGH-to-LOW) when both devices operate with the same supply voltage, same temperature, and have identical test circuits. ...
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V a
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... can.”—UMR Prof. Emeritus D. M. Sparlin ...
SP4633 1GHz 64 NON SELF OSCILLATING PRESCALER
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... ■ Electrostatic Protection † ...
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Geophysical Surveys in Khwisero, Kenya By Scott Patterson March

... Geophysical surveys are utilized to determine characteristics of subsurface materials (e.g. rocks, water and oil) from the surface of the Earth. The physical properties of the focus material (e.g. density, velocity, induction, etc.) determine which type of geophysical method and parameters of that m ...
MAX1748/MAX8726 Triple-Output TFT-LCD DC-DC Converters General Description
MAX1748/MAX8726 Triple-Output TFT-LCD DC-DC Converters General Description

... Power Ground. Connect to GND underneath the IC. Main Boost Regulator Power MOSFET n-Channel Drain. Connect output diode and output capacitor as close to PGND as possible. Must be connected to ground. ...
Electronics Lab #1
Electronics Lab #1

Electrical, Electronic and Communications Engineering Technology
Electrical, Electronic and Communications Engineering Technology

... Identify base, emitter, and collector terminals of PNP and NPN transistors. Locate the ratings, characteristics and operating parameters listed on a typical transistor specification sheet. Determine the type of transistor, NPN or PNP, and operating condition, using an ohmmeter. Identify schematic sy ...
Making Sense of Current Sensing
Making Sense of Current Sensing

... Current sense resistors are very low value resistors used to measure the current flowing through it. The current through the resistor is represented by the voltage across the resistor, so by applying I = V/R as set down by the famous school teacher Georg Simon Ohm, the current is proportional to the ...
A SPICE MODEL FOR IGBTs
A SPICE MODEL FOR IGBTs



... feedback loop. With this circuit, you have one switch inside the feedback loop just like figure 7, but instead of looking at the voltage on the output of the amplifier, switch S2 connects the output of the circuit directly to the gain resistor. This eliminates any gain errors due to current flowing ...
LXM1623-12-4x
LXM1623-12-4x

... Although the SET pins are designed such that just leaving them open or grounding them is all that is needed to set the output current, they can also be actively set. Using a open collector or open drain logic signal will allow you to reduce the lamp current for situations where greater dim range is ...
MAX77231 2.75V to 4.8V Input, 10mA Output, 35µVRMS Ultra
MAX77231 2.75V to 4.8V Input, 10mA Output, 35µVRMS Ultra

... by a current-limited, maximum on-time, minimum offtime, PFM boost converter. When the output drops below 11.7V, an internal NMOS switch forces the input voltage across the inductor. The switch turns off when the inductor current reaches 350mA, and the LX pin is driven high by the inductor until the ...
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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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