Inicio > Mis eListas > dxcolombia > Mensajes

 Índice de Mensajes 
 Mensajes 4168 al 4197 
informacion Mario tr
FW: For sale: Many David J.
RE: informacion jonhys e
FW: Rv: JOTA 2007 Luis Ram
Premios Concurso D Alexis D
Transferencia Ina HK1AA .
Solicito correo in Dxcolomb
Fwd: ARLD035 DX ne Alvaro G
RE: El terremoto e faber mo
FW: Re: El terremo luis enr
Fwd: CW Touch Keye Alvaro G
direccion de HI3CC Pclaver
RE: El terremoto e luis enr
4U1UN Diego Sa
Camino a Marte hk3dpg
Camino a Marte hk3dpg
RV: SANTA MISA eduardo
http://home.tiscal Luis Ram
Declaraciones de C Armando
RE: No se lo pierd David J. El e Armando
ZOMBIA <dxcolombia HK1AA .
En un Cable o en u HK1AA .
En caso deterremot Javier J
RE: Como hago para DIOGENES Ter HK1AA .
Fwd: ARLD036 DX ne Alvaro G
Dado de Baja ?? HK3CW
 << 30 ant. | 30 sig. >>
Página principal    Mensajes | Enviar Mensaje | Ficheros | Datos | Encuestas | Eventos | Mis Preferencias

Mostrando mensaje 4217     < Anterior | Siguiente >
Responder a este mensaje
Asunto:[dxcolombia] TOROIDALES. Datos
Fecha:Viernes, 7 de Septiembre, 2007  15:48:26 (+0000)
Autor:HK1AA . <hk1aa>

xMultitude of Toroid models, logo

by Tony van Roon

Toroids & RF-chokes, come in different shapes and sizes, like in donut, tube, and stick models, and are used on a large scale in a variety of electronic equipment. Toroids can be of different materials, like Ferrite or Iron. The most common applications today are filtering, and transformers. If you check your cable at the back of your computer monitor you will find one, or even two, on the cable going to your computer. They are also used in Power Supplies, Radio, Ham Radio, Scanners, Transmitters, Transformers, and Electro-Magnet applications.
Here is an excellent link to provide more 'Amidon' information: Bytemark Inc.

Below I have made up 4 tables with the most common-size toroids. I hope they can be of some assistance to you. The µ stands for the permeability factor of the core. All measurements are given in 'inches'. I don't have or know the info in mm (metric) so don't ask.

    Red E Cores

    Black W Cores

    Yello SF Cores

    Ferrite Toroids

Iron Powder Properties: 
Material  Basic-powder  Permeability (µ)  Freq.Range (MHz)  Color-Code 
   0        Phenolic         1               100 - 300        Tan 
   1        Carbonyl C       20              0.5 - 5.0        Blue 
   2        Carbonyl E       10              2.0 - 30.0       Red 
   3        Carbonyl HP      35             0.05 - 0.5        Gray 
   6        Carbonyl SF      8                10 - 50         Yellow 
   7        Carbonyl TH      9               5.0 - 35.0       White 
   10       Carbonyl W       6                30 - 100        Black 
   12       Synthetic Oxide  4                50 - 200        Green/White 
   15       Carbonyl GS6     25             0.10 - 2.0        Red/White 
   17       Carbonyl         4                50 - 200        Blue/Yellow 
   26       Special          75           LF Filters,Chokes   Yellow/White
*Non Linear: Material #17 was developed as a temperature stable (50) alternative to the #12 (170). Frequency ranges shown are for best 'Q'/Useful over broader frequency ranges with lower 'Q'.

Toroid used with Ham Radio

The photograph at left shows a Toroid Red 'E' Iron core
and is used in a QRP CW-transmitter (morse-code) application
in the 30-meter band.

Back to Circuits Menu
Copyright © 1999, by Tony van Roon
Last updated January 8, 2006

B O B   H K 1 A A

Se uno de los primeros en probar Windows Live Mail. Windows Live Mail.

Crea tu propia Red Social de Noticias
O participa en las muchas ya creadas. ¡Es lo último, es útil y divertido! ¿A qué esperas?