Hi Mike,
What inductor did you use for the hockey puck version?
Thanks,
Dennis
Sorry, I meant 36V 4A
The inductor in that case was a Hammond 100mH 5A. The part number escapes me at the moment. It's big. 🙂
Hammon make a non shielded 5A 100mh choke the 195T5 . Depemding on who you buy it from it's about $90 give ot take a few dollars. And as Michael said it's big weighing 14lbs. I shure wish I had bought more than one when someone had them on Ebay for $35 including postage ....
Michael it would be good if DiyAudio store would stock the PCBs.
Fair call on the comparison between the hockey puck and IRFP250
I received 2 hammond 193v chokes from Digikey yesterday so will build with IRFP250 to start with.
Steve.
Fair call on the comparison between the hockey puck and IRFP250
I received 2 hammond 193v chokes from Digikey yesterday so will build with IRFP250 to start with.
Steve.
Yeah...start with 193V/IRFP250 then go 195T5/hockey puck and recycle 193V in Vfet L'amp... 🙂
Happy Birthday Michael
Nice for keeping You warm at BAF17
Please accept my virtual B-day gift is the hockey version
An externally hosted image should be here but it was not working when we last tested it.
Thank you!
Our trip to California has been cancelled, so I'll be jonesing along with everyone else who can't go. Maybe we can form some sort of support group. 🙂
Our trip to California has been cancelled, so I'll be jonesing along with everyone else who can't go. Maybe we can form some sort of support group. 🙂
Michael i am sure i will be happy BUT!!!! I wonder how the MO-FO sounds with ???? and like most of us the urge to tinker is inevitable.
All the Best for your B-Day.
Steve.
All the Best for your B-Day.
Steve.
I had a crazy thought.
Would cascoding the (Output) transistor potentially lower the distortion?
Would cascoding the (Output) transistor potentially lower the distortion?
MR. Thanks for a great contribution that I can't wait to try!
DB120-20 AAVID THERMALLOY, Heat Sink, Square, For 80MM Power modules and Solid State Relays, 0.41 degC/W, 135 mm, 125 mm, 120 mm, Newark element14 Canada
Regards,
Dan 🙂
DB120-20 AAVID THERMALLOY, Heat Sink, Square, For 80MM Power modules and Solid State Relays, 0.41 degC/W, 135 mm, 125 mm, 120 mm, Newark element14 Canada
Regards,
Dan 🙂
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The following heatsinks worked famously when I built Michael's IronAmp!
NV115-1 AAVID THERMALLOY, Heat Sink, PCB, Board Level, 0.5 degC/W, 119.89 mm, 119.89 mm, 115 mm, Newark element14 Canada
NV115-1 AAVID THERMALLOY, Heat Sink, PCB, Board Level, 0.5 degC/W, 119.89 mm, 119.89 mm, 115 mm, Newark element14 Canada
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I was playing with Big MoFo.
This one need nice front end and preamp with lots of gain.
Do IXYS version have better specifications versus IRFP ?
Dreaming about The Dude at BAF17
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Well, the distortion was lower due mainly to the much higher bias, and the output impedance is a little lower. I haven't spent any time listening to it yet.
It's really just a case of me taking things to the extreme out of morbid curiosity and the pure fun of it. Whether it sounds better or not wasn't really the priority. 🙂