Skip to content
View in the app

A better way to browse. Learn more.

www.Head-Case.org

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Leaderboard

Popular Content

Showing content with the highest reputation on 12/25/21 in Posts

  1. Well, Merry Christmas to all the Ceasars too!
  2. Bon Anniversaire and Joyeux Noël from France! Cheers!
  3. Thanks everyone. Gifts (new Marin bike for Esmé) and holiday music at home and now jumping on the road to go to Mel’s parents. Birthday cake, apple pie, cheesecake, and who knows what else awaits (besides sugar crash). Hope anyone is having a wonderful Xmas.
  4. Merry Christmas Everyone!! 🎄☃️🎁
  5. Joyeux Noël from Paris Head-case! #NFLO
  6. I pulled a few decent shots with the Flair Pro2 and used the Bellman to make cappuccinos. A quick blast of full steam into the milk makes a perfect dry foam on top of the textured milk. This shot was actually pulled on a standard Flair brewhead, not the Pro, but still turned out pretty. 15.5 in 32 out in about 45 seconds, peaking at 6 bar.
  7. Bottle kill for a slightly more adulterated version than the recipe called for (how convenient!) And my portion (Joanne will be delivering some of her share to selected neighbors, tomorrow)
  8. Egg nog / custard base, Based on The plan is to portion it out prior to the addition of the Bourbon, so there is a virgin, and an adulterated version for tomorrow.
  9. Cases and heatsinks are a problem for DIY builds. Front panels of thick alloy need machining and tapping as do heatsinks. These items are hard to get machined or the sizes the builder wants are not available. I devised a way of making cases, which eliminated these problems and made for easier case design, lower costs and quicker builds. Cases Made from sheet aluminium alloy of preferably 3mm so only single sheet of material needed. I get the parts laser cut by a company which will also supply the material. The case parts need holes to be countersunk where necessary and are then taken for surface finishing, (bead blasting and anodising in my case). I then take the front panels to be screen printed with the graphics I provide. The assembly is with corner posts and angle brackets cut and drilled, and bolted together. I only drill and tap corner posts to attach base and top panels. The case is basically a box with a front panel on to cover the front of the box. Heatsinks https://uk.farnell.com/amec-thermasol/fch505010t/heat-sink-50mmx50mmx10-25mm-ceramic/dp/2499023 Edit; a link to these was omitted, http://www.amecuk.co.uk/ Element14 has them in many countries. https://www.newark.com/c/cooling-thermal-management/heat-sinks?brand=amec-thermasol I discovered porous ceramic heatsinks and realised that these small, light, self-adhesive items would solve problems. I bought a few and tested to see if they did what was claimed. A single 50mm square of 10mm thick could dissipate 5-10W stuck on sheet aluminium. To make heatsinks you only have to bolt the semiconductors directly to the 3mm plates and place the ceramic heatsinks as needed. They are not expensive, and with a range of sizes you can arrange heatsinks of different shapes. I was concerned that they might unstick but the opposite has been true, they are hard to remove. They are not pretty so I contain them inside the case and organise slots above and below to act as a chimney to allow convection. This works well and they do not run hot. The porous ceramic devices are very effective. I have found that this method is much easier to procure and build. The amplifiers built this way can be smaller and lighter.
  10. I wish that despite the Covid and all the weird things going on these days, you have a merry birthday. Cheers!!!
  11. Have a great Christmas everyone!
  12. Hey sacd_lover here. Have not been on the board in years. See lots of names I know .... tkam, kevin gilmore, mexican dragon, blessingx, Dusty Chalk etc... Hope everybody has been well. Just picked the latest thread to reintroduce myself.
  13. Happy birthday, Ric!
  14. Thanks everyone. I had a nice day and nice evening with my birds and cat. Hope you all are doing well.
  15. Happy birthday Ric!
  16. Happy Birthday, Ric!
  17. Hope everyone has a wonderful Xmas with family, friends, wine, book, and/or movie.
  18. Happy Birthday, Ric, One and All!
  19. Bringing you a joyous Birthday Blessing!
  20. Happy birthday, Ric! Double nickel!
  21. Happy Birthday Ric!
  22. Happy Birthday, Ric!
  23. Happy Birthday, Ric!
  24. ciss of 1350pf work, yes. sound good, unlikely.
  25. Very Happy Birthdaymas!!
  26. Oooh, didn't know about Tracey Thorn's album, will definitely listen! Not the most capable voice, but SO emotive, I love it/her. BTW, one of my favorite EBTG tracks is "Come On Home" which also has a slight Xmas theme or reference to it.
  27. Happy Birthday, Ric!
  28. Next up, Some of Alton Brown's Brine, for a turkey breast, for tomorrow.
  29. Pre Booze (and cream), it's a very nice rich custard (sweet, but not overly so)
  30. Is the GRLV intended to output +20VDC or +/-20VDC?
  31. Evening drifting into more contemportary-ish holiday music... And continuing our favorite bittersweet holiday song for another year...
  32. Happy Birthday, Ken!
  33. Bon anniversaire Ken! Cheers!
  34. Happy birthday, Ken! Best age to be, amirite? (party favour noise)
  35. Didn't we do this already last year? Happy birthday Ken!
  36. Happy Birthday Ken!!!
  37. A very happy birthday to you, Ken!
  38. Very Happy Birthday!!
  39. As you know, There are a bit higher chances to find obsolete Japanese semiconductors in Japanese auction than eBay. However it's true that still some (or many) of them are fakes, probably not as bad as eBay though. I obtained reliable name list as below. Their price isn't cheap, but you get guaranteed genuine parts. masayanmori kusto30145 wyxnb12593 Actually they belong to the company Tohri Electronics trade inc. and they use those Yahoo! auction accounts for private customers since Tohri's business is mainly B2B. Tohri is known to have good stock of 2SJ79 and many other rare parts. They can make combined shipping when you buy from those accounts in the same time, the sales contact person of Tohri said. BTW I failed to get quote for large volume of J79 as they want to keep serving their limited stock to the customers who needs for long time. I like that answer.

Important Information

By using this site, you agree to our Terms of Use.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.