oldgrandpainmi
- May 14, 2006
- 62
- Joined
- May 14, 2006
- Messages
- 62
Hello all,
I hope you can give me advice/information an where I can get some coil forms for construction of a 1mH and .22mH air core crossover inductors. Yeah, I could buy them a lot easier from a couple sources, but I'd like to see if I could build them for fun, first! I had been hoping to salvage some from an old speaker, but have yet to run across any. I used to throw these things out regularly, but have yet to see any now that I need them!!!! Murphy's Law strikes again!!!
The forms need to have a 1.6" (1.5") and 1.16" (1.25") core diameters, and the heights need to be .4" and .3" respectively, per an inductor program I found. The core diameter is I bit bigger that I want, but it is due to the magnet wire diameter I am going to use (22guage). This will put the power rating of each at about 100w RMS.
I don't have a pic of the form, but if you can picture an empty fishing line spool, this is what they look like.
I've emailed several places, including Amidon, for forms and/or information, but still have had no reply's.
I am looking for your guy's advice first before attempting another avenue.
Thanks!!
oldgrandpainmi
I hope you can give me advice/information an where I can get some coil forms for construction of a 1mH and .22mH air core crossover inductors. Yeah, I could buy them a lot easier from a couple sources, but I'd like to see if I could build them for fun, first! I had been hoping to salvage some from an old speaker, but have yet to run across any. I used to throw these things out regularly, but have yet to see any now that I need them!!!! Murphy's Law strikes again!!!
The forms need to have a 1.6" (1.5") and 1.16" (1.25") core diameters, and the heights need to be .4" and .3" respectively, per an inductor program I found. The core diameter is I bit bigger that I want, but it is due to the magnet wire diameter I am going to use (22guage). This will put the power rating of each at about 100w RMS.
I don't have a pic of the form, but if you can picture an empty fishing line spool, this is what they look like.
I've emailed several places, including Amidon, for forms and/or information, but still have had no reply's.
I am looking for your guy's advice first before attempting another avenue.
Thanks!!
oldgrandpainmi
