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Power Variable Resistors

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Resistors are electrical components that oppose the flow of either direct or alternating current. They are used to protect, operate, or control circuits.
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Parts by Number for Power Variable Resistors Top

Part # Distributor Manufacturer Product Category Description
D25K1R0 Digi-Key Ohmite Potentiometers, Variable Resistors RESISTOR POWER ADJ 1.0 OHM 25W
D25K10R Digi-Key Ohmite Potentiometers, Variable Resistors RESISTOR POWER ADJ 10 OHM 25W
D100K1K0 Digi-Key Ohmite Potentiometers, Variable Resistors RESISTOR POWER ADJ 1.0K OHM 100W
D225K1K0E Digi-Key Ohmite Potentiometers, Variable Resistors RESISTOR POWER ADJ 1.0K OHM 225W
D25K5R0 Digi-Key Ohmite Potentiometers, Variable Resistors RESISTOR POWER ADJ 5.0 OHM 25W
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Conduct Research Top

  • Implementing Temperature-Based Variable Fan Speed Control in NLX Power Supplies
    consisting of two pulses per fan rotation. 2. FanC is an input to the NLX-compliant power supply used by the motherboard to regulate fan speed and to shut the fan down. FanC is a 0V to 12V analog signal. Implementing Temperature-Based Variable Fan Speed Controller in NLX Power Supplies M...
  • Resistor Databook
    : To control the charge or discharge current and stabilize load. ? Motor: To control the rotation speed, either steady or variable. Re: Current sensor When loading current is low, current flows in direction 1. When loading current is increased to a certain level and turns Tr2 on, current flows...
  • Power Switching
    Power-control modules are circuits comprising devices such as silicon-controlled rectifiers, triacs, power transistors, and power rectifier diodes. These circuits can function as pulse-width modulators or switches to provide variable power to specified loads. Power modulators electronically control...
  • Challenges in Electric Power Measurement
    ohmmeter / microohmmeter / micro-ohmmeter. Arbitrary Waveform Generator. Calibration Service. Radiation Detector. Variable Transformer. Tachometer. Electric Power Measurement. The days of unlimited energy use belong to the past. Manufacturers of electric apparatus and machines are forced to optimize...
  • Power-up Trouble Shooting
    from an internal RC. Due to the. characteristics of resistors and capacitors, this time is. extremely variable over temperature and voltage. There. is also a device to device variation. See the data sheet. POR signal. for the range of this time-out. TPWRT. Note: Future devices will change...
  • Introduction to Current Source Power Units
    line operated power units with the variable drive current feature utilize a multi-turn potentiometer for Re to allow adjustment of sensor drive current over the range of 2 to 20 mA. The DC Power Source. In the portable Dytran power units, the energy to operate the LIVM sensor amplifier is supplied...
  • Uninterruptible Power Supply Reference Design
    Topology. · Variable Loop Response. · True Sinusoidal Output. · Digital Filtering. · Point-to-Point Output Correction. · Parts and Complexity Reduction. · 1400 VA Rating. · Peripheral Integration. · 120/240 V Input. · Ease of Interfacing. · Testability. · Time to Market. Information contained...
  • Soft-Start Controller For Switching Power Supplies
    input for external control of the. commands are present in the software, one in the initial. supply. wait for input routine and the second in the second wait. Note 1: Flash memory usage is variable, depending. for input routine. To speed up the ramping PWM code,. on the soft-start period. a Watchdog...
  • A Digital Constant Current Power LED Driver
    . A. dissipation. More important, the resistor power. count variable, Count1msec, is incremented each. dissipation would reduce the overall efficiency of the. time a Timer2 interrupt occurs. An ADC conversion is. LED driver. performed and the PI algorithm is executed after every. eight Timer2...
  • Application Guidelines for On-Board Power Converters (.pdf)
    conditions may cause inte-. For power levels below 30 W, it is not uncommon for. grated circuit (IC) lock up or changes in state, produc-. the dc-to-dc converter to be designed using variable. ing an undesired output. Lock up is a condition when. frequency techniques to minimize cost. The operational...

Engineering Web Search: Power Variable Resistors Top

Vishay - manufacturer of discrete semiconductors and passive...
- + IC's - Power and Linear Analog Switches and Multiplexers (146) Power ICs (93) - + Modules Bridge (15)
See Vishay Intertechnology, Inc. Information
Vishay - New Vishay Sfernice PRV4 Panel Potentiometer Features...
http://www.vishay.com/resistors-variable/potentiometers/sales http://www.vishay.com/ resistors-variable/potentiometers/sales
See Vishay Intertechnology, Inc. Information
AN 74: Evaluating Power for Altera Devices
Table 1. Variables Used for Evaluating Power Consumption (Part 1 of 2) Variable Unit ICCCSTANDBY mA K ?A/(MHz ? LE) fMAX MHz N LE ICCINT mA PINT mW
See Altera Corporation Profile & Catalog
Power Calculator User Guide

See Altera Corporation Profile & Catalog
Power supply - Wikipedia, the free encyclopedia
"Power source" redirects here. For other uses, see power source (disambiguation). Power supply From Wikipedia, the free encyclopedia
Pulse-width modulation - Wikipedia, the free encyclopedia
For about a century, some variable-speed electric motors have had decent efficiency, but they were somewhat more complex than constant-speed motors,
Xilinx XAPP863 Using Digitally Controlled Impedance: Signal...
explains the reason for the power penalty and suggests a simulation technique for comparing the signal integrity and power dissipation of internally
See Xilinx, Inc. Information
Notes on the Troubleshooting and Repair of Small Switchmode...
The switchmode power supply (SMPS) Switchmode power supply repair Switchmode Power Supplies Power Supply Fundamentals
Sam's Laser FAQ - Ar/Kr Ion Laser Power Supply Design
Constructing Low Ohm High Power Resistors
400V250A Variable Linear DC Power Supply - Detailed info for...
home products WWL-LSX High power linear DC power supply 400V250A Variable Linear DC Power Supply

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