Category: Blog

blog page of cougar electronics corp.

18

Feb2018

Selenium Rectifiers & Surge Suppressors

February 18, 2018 / Blog, power conversion
The technology Selenium rectifiers and suppressors are still used in the industry for their strong reliablity. This technology has been mainly replaced by silicon diodes, providing a better efficiency and lower voltage drop. Selenium components are very interesting for their reliability. Those components have the ability to recover after surge failure, which make ... Read More

19

Aug2017

Heat Pipe : futur in electronics cooling

August 19, 2017 / thermal management
Heat pipes coolers are like the Loch Ness monster... lot's of people are speaking about, but few people have really tested them! This technology sounds a little bit mysterious for people coming from a pure electronics background ! How can such a thing (looking like a basic copper tube), would ... Read More

15

Jul2017

Silicon Carbide (SiC): Market Analysis

July 15, 2017 / semiconductor
There has been a notable increase in the developpment of Silicon Carbide semiconductor materials (SiC) in the past few years. It seems we are now close to a massive use of those new solutions, made possible by the considerable number of peoples working on the subject and price drop down. The ... Read More

14

Jul2017

Power Supply Rectifier for Plating

July 14, 2017 / surface finishing
COUGAR ELECTRONICS has just updated its web site with a brand new area dedicated to pre-owned DC power supply ! Application Plating Metal finishing Surface finishing Plating tank Power Supply Rectifier for Plating / caracteristics Current : from 15 Amps to 5000 Amps Brands : ... Read More

08

Jul2017

KENDEIL capacitors

July 8, 2017 / power conversion
COUGAR ELECTRONICS is happy to announce the signature of a distribution agreement with KENDEIL capacitors. We are know able to support your projects in power electronics with the following range of products : KENDEIL is a world leader in power electronics capacitors. With ... Read More

04

Mar2017

Kraft Powercon – switch mode power supply for plating

March 4, 2017 / surface finishing
Cougar is proud to announce a partnership with Kraft Powercon ! We are now able to supply swith mode power supply for plating industry. Modular units to achieve requested voltage or current Compact Smart control and fully configurable High communication abilities Contact us ... Read More

Selenium Rectifiers & Surge Suppressors

The technology

Selenium rectifiers and suppressors are still used in the industry for their strong reliablity. This technology has been mainly replaced by silicon diodes, providing a better efficiency and lower voltage drop. Selenium components are very interesting for their reliability. Those components have the ability to recover after surge failure, which make them excellent for security applications. COUGAR ELECTRONICS has been one of the leading company in the 50's. We are the last firm still manufacturing parts made in USA thanks to our CT factory.

Elevator industry, Military and power generation

Despite most of our business is now focused on up to date semionductors like silicon diode, thysirtors, IGBT and SiC, our manufacturing department is serving elevator industry (otis, schindler, kone, thyssen krupp). We also serve specific fields like military or power generation application .

Service and Fast delivery

Our excellence in organisation, allow us to serve after-sales service with exceptional fast deliveries :
  • same day shipping
  • next day shipping

Looking for a part, call us !

If you look for a specific part number, or even if you do not have part number. Do not hesitate to call us. We build and design any type of selenium rectifier or selenium suppressor. Do not give up, thinking these components are impossible to find. We are here to help ! [caption id="attachment_2376" align="alignnone" width="282"]selenium rectifier selenium rectifier[/caption] [caption id="attachment_2370" align="alignnone" width="297"]Selenium7 Rectifier 3 phases[/caption] [caption id="attachment_2369" align="alignnone" width="210"]Selenium Suppressor Surge Suppressor[/caption]

Troubleshooting a selenium rectifier or suppressor

Our customer service will be happy to help you to determine what's the best solution.

Find parameters for rectifiers :

  • Voltages: Standard Voltages per cell up to 36 v rms. The voltage rating is determined by the number of cells in series
  • Current: Ratings are determined by the size of the cell or the number of cells in parallel. The circuit configuration and the type of cooling are also important factor to consider.
  • Circuits: Half wave, Doublers, Center Taps, Full Wave Bridges, single and three phase.

Find parameters for suppressors :

  • Ratings: Determined by the cell size and number of cells in a series (similar to rectifiers above).
  • Suppressors are also rated by the voltage clamping factor and the amount of reverse energy they can absorb (in joules).

More information about our product

[embed]https://cougarelectronics.com/cougar-electronics/power-conversion-components/selenium-rectifier-suppressor/#[/embed] https://en.wikipedia.org/wiki/Selenium_rectifier
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