Power transistor help
- Thread starter gary33030
- Start date
- Joined
- Jan 14, 2011
- Messages
- 74,244
- Location
- Gillette, Wyo.
- Tagline
- Halfbiass...Electron Herder and Backass Woof
Lee, I've outfitted many of amps with these. I did have issues with finding the correct spacing for 700B/Clair Brothers since they used the same spacing. But they are really nice. Painted, or anodized, chrome, polished, satin or raw is the order of the day. That was the reason we had 700B handles CNC'd for us, I didn't find suitable handles with the spacing and style.
- Joined
- Jan 14, 2011
- Messages
- 74,244
- Location
- Gillette, Wyo.
- Tagline
- Halfbiass...Electron Herder and Backass Woof
- Joined
- Aug 28, 2022
- Messages
- 87
- Location
- Homestead, Florida 33035
- Tagline
- I've had Phase Linear before!
- Joined
- Aug 28, 2022
- Messages
- 87
- Location
- Homestead, Florida 33035
- Tagline
- I've had Phase Linear before!
Merry Christmas Gary and Happy New Year
I worked on your backplanes today, a before and after picture.
All the PEMnuts pulled down fine, removed a ton of excess solder with Soder-Wick. Word of advice to backplane builders on amount of solder around the PEMnuts, use it sparingly. You should see the vertical sidewall of the PEMs after the solder process is complete with a nicely radiused meniscus around the base of each nut where it adheres to the pad. It is not "the bigger the blob, the better the job" that applies here.
Each PEM had the excess solder removed from the top of each PEMnut so you will have a clean interface with the nylon washers.
I also will be replacing some of the 22AWG interconnect wires as the insulation is nicked. A word to builders, do not use automatic strippers on Teflon wire or this nicking will result. Use sharp Ideal Industries T-strippers for Teflon wire.
I will be wrapping these up, cleaning well and shipping them back to you.
Joe
I worked on your backplanes today, a before and after picture.
All the PEMnuts pulled down fine, removed a ton of excess solder with Soder-Wick. Word of advice to backplane builders on amount of solder around the PEMnuts, use it sparingly. You should see the vertical sidewall of the PEMs after the solder process is complete with a nicely radiused meniscus around the base of each nut where it adheres to the pad. It is not "the bigger the blob, the better the job" that applies here.
Each PEM had the excess solder removed from the top of each PEMnut so you will have a clean interface with the nylon washers.
I also will be replacing some of the 22AWG interconnect wires as the insulation is nicked. A word to builders, do not use automatic strippers on Teflon wire or this nicking will result. Use sharp Ideal Industries T-strippers for Teflon wire.
I will be wrapping these up, cleaning well and shipping them back to you.
Joe
- Joined
- Aug 28, 2022
- Messages
- 87
- Location
- Homestead, Florida 33035
- Tagline
- I've had Phase Linear before!
Joe,
I did not think of you working through Christmas on my boards, of which I thank you!!! I’m glad you were also able to use these boards as a teaching lesson for others. After I get this 400 fired up, I have another one waiting to be upgraded. This is so relaxing to me in my evenings. Again many thanks, and everyone “Happy New Year!”
I did not think of you working through Christmas on my boards, of which I thank you!!! I’m glad you were also able to use these boards as a teaching lesson for others. After I get this 400 fired up, I have another one waiting to be upgraded. This is so relaxing to me in my evenings. Again many thanks, and everyone “Happy New Year!”
- Joined
- Aug 28, 2022
- Messages
- 87
- Location
- Homestead, Florida 33035
- Tagline
- I've had Phase Linear before!
- Joined
- Aug 28, 2022
- Messages
- 87
- Location
- Homestead, Florida 33035
- Tagline
- I've had Phase Linear before!