Hi,
Hope to find someone in here that knows where to buy transformers for ribbon tweeters or how to make them my self ??
thanks,
regards,
Svein Ivar
Hope to find someone in here that knows where to buy transformers for ribbon tweeters or how to make them my self ??
thanks,
regards,
Svein Ivar
Here's something I thought about that might work. Find a description of transformer basics and use those equations. Look at toroidal inductors for crossovers. Choose an inductance value for your target low frequency. Wind a dozen or so turns on top as a secondary and use that to determine the number of original primary turns. Once that's known figure the turns ration you want and wind that as the final secondary and test.
Lundahl make a transformer for ribbons - LL3322
https://www.lundahltransformers.com/wp-content/uploads/datasheets/3322.pdf
https://www.lundahltransformers.com/wp-content/uploads/datasheets/3322.pdf
Hi, Thank you for feedback! have you done this to make an transformer? maybe you have an example?
I have heard about this company. Will contact them now. Have you any experience with them ?
You can try contacting Michael Borreson who makes their own transformers and speakers. They are in Sweden search Borreson Speakers.
Lundahl are respected, good quality. I haven't owned that particular transformer, but I wouldn't hesitate to buy them if I was making a ribbon tweeter that needed a transformer. (Which I might well do at some point.)
Member @50AE (https://www.diyaudio.com/community/members/50ae.187024/) can probably help you or provide custom products
I had a pair of what I presume were Raven R2 proto ribbion tweeters. When you remved the back cover and exposed the inner workings the coil was a "redhat" gas valve solenoid bobbin.
Hi,
I dont understand what you mean by "redhat" gas valve solenoid bobbin.
Can you give me some more details/descrition ?
cyclotronguy
Thank you for information about the Raven R2 tweeters.I dont understand what you mean by "redhat" gas valve solenoid bobbin.
Can you give me some more details/descrition ?
Many wound there own i believe, rewinded a simple small teroid (removed all wire and woudn my own) once. and i did not know it was that easy. dont know if it had all the best specs... but worked fine for me. i just used a regular impedance mathcing transformer calculator to get the ratio.
it has been to long ago, i must say other users around here have much more experience with transformers in general like gerald and a few others ! but a search will give quite some results to.
I have wondered for decades if the transformer inside pistol-style soldering guns would work.
The input is, of course, mains voltage (such as 120vac). The output drives just a piece of copper with a narrow tip that heats up with the high current running through it.
Local thrift store might have some old ones or bargain units from Asia.
The input is, of course, mains voltage (such as 120vac). The output drives just a piece of copper with a narrow tip that heats up with the high current running through it.
Local thrift store might have some old ones or bargain units from Asia.
haha good one, it actually might. i mean it is as good as a dead short 🙂
Snell
If you have a gas water heater, especially an older one, there is a modular electric gas valve. About the only thing that ever went out on those was the solonnoid coil. The brand name was "red-hat" (tm), made by ASCO. The proto Raven R2,s under the cover had 120 Vac "red-hat" coils. The coil was the primary, the tweeter ribbon was the secondary.
If you have a gas water heater, especially an older one, there is a modular electric gas valve. About the only thing that ever went out on those was the solonnoid coil. The brand name was "red-hat" (tm), made by ASCO. The proto Raven R2,s under the cover had 120 Vac "red-hat" coils. The coil was the primary, the tweeter ribbon was the secondary.
hi guys! I am now trying out this RF- Transformer Calculator. https://www.everythingrf.com/rf-calculators/rf-transformer-calculator
I have an ribbon with messured 0.9 ohms (Input ). And for output I entered 6.0 ohm.
The Calculator then gives the result NP/NS = 0.387298 and NS/NP = 2.58198893
Does that mean 0.3 turns, 38 turns or 387 turns ? I did you quite understand the ratio of turns `?
Pleace help ;-)
I have an ribbon with messured 0.9 ohms (Input ). And for output I entered 6.0 ohm.
The Calculator then gives the result NP/NS = 0.387298 and NS/NP = 2.58198893
Does that mean 0.3 turns, 38 turns or 387 turns ? I did you quite understand the ratio of turns `?
Pleace help ;-)