Inductors made for crossover in an amp?
 User Name Stay logged in? Password
 Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read Search

 Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

 Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
 15th September 2004, 04:16 PM #11 Sch3mat1c   diyAudio Member     Join Date: Jan 2003 Location: Milwaukee, WI My Coil Design and Construction Manual, by Babani Electronics Books, shows no equations, but tables for different contructions. Basically, you select an inductance from a list of common values, or from a nomograph to find other decimal values, then apply corrections to apply this data to a core of your choice (the ratios of data in the first table assumes one particular core). The assumption is made that you use a wire suitable for the current capacity, and the tables find a turns number which just happens to fill out the core. There are also tables for proper air gap, which the data assumes you use. But that doesn't help you any, so I'll add: L = 3.2 * N^2 * mu * A * 10^-8 / l, where L is in henries, N is turns, mu is permeability, A is cross-sectional area of the core (center leg) in square inches and l is length of the magnetic path in inches. For generic transformer iron, mu = 1000 or so (up to 100,000 for mu metal). RDH4 has a lot of info on the subject. Tim __________________ Seven Transistor Labs, LLC Projects and Resources / Electronic Design and Consultation
 16th September 2004, 02:25 AM #12 JojoD818   diyAudio Moderator     Join Date: Mar 2003 Location: searching... Tim, I have checked local bookstores but no book like that here. Thanks for the equation btw. I am so interested in choke making that if you have additional data about them please send me a copy at jojod818@yahoo.com Thanks! JojoD
 16th September 2004, 11:28 AM #13 Yugo diyAudio Member     Join Date: Jun 2004 Location: Ex-Ex Yu,very far from Ei factory info fo PSU chokes [QUOTE]Originally posted by JojoD818 [B]Just curious, why can't I find any details on winding a diy choke? I mean, we have the magnet wires, the E-I cores, covers and legs, the only thing missing is the number of turns and what size to use. Jojo, Radiotron Designer's Handbook is an excellent source for info regarding chokes and PSU.I wind my chokes using Hanna's method which is well described,and is in a way, empirical method,mostly.Just convert the values in metric numbers(if you need) and use the little graph for determing the gap,turns,etc....Haven't had any problems so far! Regards, Yugovitz __________________ Bird lives!
 16th September 2004, 04:01 PM #14 JojoD818   diyAudio Moderator     Join Date: Mar 2003 Location: searching... Thanks! Now I have to look for that handbook.

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Site     Site Announcements     Forum Problems Amplifiers     Solid State     Pass Labs     Tubes / Valves     Chip Amps     Class D     Power Supplies     Headphone Systems Source & Line     Analogue Source     Analog Line Level     Digital Source     Digital Line Level     PC Based Loudspeakers     Multi-Way     Full Range     Subwoofers     Planars & Exotics Live Sound     PA Systems     Instruments and Amps Design & Build     Parts     Equipment & Tools     Construction Tips     Software Tools General Interest     Car Audio     diyAudio.com Articles     Music     Everything Else Member Areas     Introductions     The Lounge     Clubs & Events     In Memoriam The Moving Image Commercial Sector     Swap Meet     Group Buys     The diyAudio Store     Vendor Forums         Vendor's Bazaar         Sonic Craft         Apex Jr         Audio Sector         Acoustic Fun         Chipamp         DIY HiFi Supply         Elekit         Elektor         Mains Cables R Us         Parts Connexion         Planet 10 hifi         Quanghao Audio Design         Siliconray Online Electronics Store         Tubelab     Manufacturers         AKSA         Audio Poutine         Musicaltech         Aussie Amplifiers         CSS         exaDevices         Feastrex         GedLee         Head 'n' HiFi - Walter         Heatsink USA         miniDSP         SITO Audio         Twin Audio         Twisted Pear         Wild Burro Audio

 Similar Threads Thread Thread Starter Forum Replies Last Post owdi Swap Meet 0 21st August 2007 10:27 PM Jay Multi-Way 0 8th August 2005 01:25 AM venki Multi-Way 5 14th June 2005 04:44 PM cowanrg Multi-Way 3 28th August 2003 09:06 PM trespasser_guy Multi-Way 2 19th September 2002 12:39 AM

 New To Site? Need Help?

All times are GMT. The time now is 08:02 AM.