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COTS components, PASSIVES

Filter Shape Factor and Selectivity

  • Posted by doEEEt Media Group
  • On March 3, 2023
  • 0
The Ideal Filter would have a unit gain (0dB) in its passband and a gain of zero (-infinity dB) in its stop band. Between the pass band and stop band, there would be no indecision and would transition from 0dB to -infinity dB asymptotically.
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EEE Components, PASSIVES, RF & MW

Filtering out common mode noise with EMI filters

  • Posted by doEEEt Media Group
  • On January 23, 2022
  • 0
Today’s automobiles provide a prime example. In a single vehicle, you can find Wi-Fi, Bluetooth, satellite radio, GPS systems, LED lights, air conditioning, power steering, anti-lock brakes, rear-view cameras, and other instrumentation. Numerous items also operate using dc motors, including power seats, adjustable mirrors, windshield wipers, power windows, and sunroofs. This same example could also apply to items ranging from Wi-Fi or Bluetooth-enabled appliances like washing machines, espresso machines, medical instruments, and even medical implants.
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EEE Components, PASSIVES

EMC CL and LC Filters Comparison

  • Posted by doEEEt Media Group
  • On May 25, 2021
  • 0
First, the insertion loss a general filter is defined, and then the impact of the source and load impedance on the insertion loss is investigated. Simulations and measurements focus on the CL and LC filters. In Part II (to appear in the next issue) the performance of the Pi and T filters is evaluated and compared to that of the CL and LC filters.
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EEE Components, PASSIVES

Why low ESR matters in capacitor design

  • Posted by Tomáš Zedníček
  • On May 24, 2021
  • 0
A practical capacitor is a non-ideal component. Its circuit model contains series inductance (ESL) and series resistance (ESR). Although equivalent series resistance is often shown in circuit models as a constant value, it varies depending on operating conditions. ESR is resistance from a combination of energy loss mechanisms under specific operating conditions.
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EEE Components, PASSIVES

Ceramic Feedthrough Filters Explained

  • Posted by doEEEt Media Group
  • On May 8, 2021
  • 0
EMI is a serious concern for devices that are externally powered (ones that have a plug) or require signal wires that need to extend outside the device (signal wires that might attach to sensors or input/output devices). The wires that connect to power sources, or I/O points, can act as antennas that will allow EMI to be received (coupled onto them) and enter the device.
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EEE Components, PASSIVES

Würth Elektronik Extends Miniature SMT Ferrites with Top Filter Properties

  • Posted by doEEEt Media Group
  • On May 7, 2021
  • 0
The SMDs are AEC-Q200 qualified as part of Würth Elektronik’s automotive electronics portfolio. WE-CBA features high-quality Ni-Sn electrodes, a very high current carrying capacity up to 6 A, and operating temperatures from -55 to +125ºC. The ferrites, which are available in various specifications, are ideally suited as data line filters and for decoupling the supply voltage.
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EEE Components, PASSIVES, RF & MW

KEMET Brings Innovation to Magnetics

  • Posted by doEEEt Media Group
  • On December 27, 2020
  • 0
KEMET makes two types of magnetics products for use in electrical applications. The first are magnetic components used in power applications.The second are the various filters and chokes used for electromagnetic interference (EMI) control and protection.
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