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Blog

Heat Flow and Temperature Difference in an Air Coil Inductor

By sps | Inductors | Comments are Closed | 16 November, 2018 | 2

Predicting the final temperature of a part is not always an easy thing to do. It becomes a complex task for complex parts. We’re going to predict this final temperature for something simple, like air coil inductors. The mathematics found can “loosely” be applied to more complicated parts but certainly, the approach can be applied…

Current Sense Transformer Design

By sps | News & Announcements, Transformers | Comments are Closed | 8 October, 2018 | 0

In order to design current sense transformers, you need to determine the DCR of the SEC, the inductance of the SEC, the SEC wire area/gauge to use, the magnetic area of the core, the excitation current, the % error of the CT and the desired output voltage for a given input current. Let’s start by…

Improved Transformer Voltage Regulation Using Mathematical Prediction

By sps | Transformers | Comments are Closed | 14 August, 2018 | 2

Voltage regulation of transformers for no load and full load voltages. So you’ve chosen a bobbin, wire, PRI turns, etc… now you want to spec an output voltage under LOADED conditions and determine the SEC turns needed to meet those voltages… Your output voltage drops when the SEC is LOADED compared when it’s at NO…

Flyback Transformers: Discontinuous Conduction Mode Flyback Switching Transformer Design…

By cet | News & Announcements | Comments are Closed | 18 April, 2018 | 5

A Flyback Transformer is a type of switching transformer that comes in two flavors, CCM (Continuous Conduction Mode) and DCM (Discontinuous Conduction Mode). The DCM version is the one we will develop here….   What is a DCM Flyback Transformer? The idea of the DCM flyback transformer is that the SEC current drops back to zero before the next…

Nikola Tesla vs. Thomas Edison: The War of Currents

By cet | News & Announcements | Comments are Closed | 5 December, 2016 | 0

The Department of Energy launched a poll:  Who is the greater inventor, Edison or Tesla? cettechnology.com Before getting to the poll results of Nikola Tesla vs. Thomas Edison, AC vs. DC, it is interesting to learn a little more about the inventors as individuals. About Thomas Edison We credit U.S-born Thomas Alva Edison with inventing…

The Basics of Common Mode Choke Windings

By Michelle Farnum | Electrical Technology, Inductors | Comments are Closed | 3 December, 2016 | 0

The impedance of an inductor is proportional to its inductance and the frequency of the signal passing through it. Inductors, therefore, can act like low-pass filters, that is they allow low-frequency signals to pass through them, while they block higher frequency signals. A common mode choke inductor is a special type of filter with two…

Faraday – Pioneer in Electromagnetism

By cet | News & Announcements | Comments are Closed | 14 November, 2016 | 0

Michael Faraday (1791-1867) was an English scientist whose many experiments contributed greatly to the understanding of electromagnetism, making him one of the most influential minds of the 19th century. Notably, Faraday began his career as a chemist. He wrote a manual of practical chemistry that reveals his mastery of the technical aspects of his art,…

Common Mode Choke Design

By cet | News & Announcements | Comments are Closed | 24 June, 2016 | 0

COMMON MODE CHOKE / INDUCTOR DESIGN  The common mode choke is one of the many types of inductors. Common mode choke is usually used in a power supply to filter out noise from the incoming line voltage. Impedance is the most important aspect of a common mode choke. Impedance of an inductor is usually specified…

Phantom Power Transformer

By cet | News & Announcements | Comments are Closed | 25 May, 2016 | 1

High Impedance Step Up Transformer Power Input – 48VAC Power Output – 107 VAC @ 280uA (30mVA)   The customer for this component had a guitar application where due to a lack of Earth grounding he was seeing a “phantom” voltage being induced elsewhere in his product.  Instead of ignoring this voltage he decided he…

New Vending Machine Power Supply Design

By cet | News & Announcements | Comments are Closed | 5 May, 2016 | 2

New vending machine power supply design details: External type power supply Input – 110VAC – 240 VAC. Output – 24 VAC @ 3A – 4A (72W-96W). Input Connection – IEC C13 Male. Output Connection – Wire (Not terminated) (Optional) Notes: The power supply must have an A/C input line filter and voltage output regulation.  …

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Latest News from CET

Custom Chokes

Here at CET, we do custom transformer and inductor solutions every day. One such part was a high current custom choke desired by a customer of ours. The design of this part actually went through a couple of iterations. Initially, we designed for performance keeping cost in mind. Our solution was a performance success, but the…

 

What is an Inductor?

What is an inductor, its purpose, and how does it work? Inductors are an electrical component made essentially of a coil of wire, often wound around a magnetic core. From our experts, here are some facts to help you better understand this technology.   What is the Purpose of an Inductor? The purpose of inductors are that…

 

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  • Home
  • Electrical Transformers
    • Toroidal Transformers
    • Step Down Transformers
    • Planar Transformers
    • Power Transformers
    • Current Sense Transformers
    • Switching Transformers
    • Flyback Transformers
    • Encapsulated Transformers
    • High Voltage Transformers
    • Audio Transformers
    • Class 2 Transformers
    • View All Transformers
  • Inductors
    • Toroidal Inductors
    • Common Mode Choke
    • Drum / Bobbin Core Inductors
    • Air Core Coil Inductors
    • PFC Inductors
    • View All Inductors
  • DC-DC Converters
  • Power Supplies
  • Custom Designs
  • Blog
  • Contact
    • RFQ
Copyright © 2016 CET Technology - 27 Roulston Rd, Windham NH 03087 - Phone: (603) 894-6100 - Fax: (603) 894-6161 - cet@cettechnology.com
  • Home
  • Electrical Transformers
    • Toroidal Transformers
    • Step Down Transformers
    • Planar Transformers
    • Power Transformers
    • Current Sense Transformers
    • Switching Transformers
    • Flyback Transformers
    • Encapsulated Transformers
    • High Voltage Transformers
    • Audio Transformers
    • Class 2 Transformers
    • View All Transformers
  • Inductors
    • Toroidal Inductors
    • Common Mode Choke
    • Drum / Bobbin Core Inductors
    • Air Core Coil Inductors
    • PFC Inductors
    • View All Inductors
  • DC-DC Converters
  • Power Supplies
  • Custom Designs
  • Blog
  • Contact
    • RFQ
CET Technology