What’s on *YOUR* workbench?

Harvested the semis from an old Japanese hifi system, just for fun, before throwing it away.

Any of these parts stand out as something worth trying out?
Transistors
  • A872
  • A965
  • C2546
  • C1775
  • C458
  • A1029
ICs
  • VC5022
  • HA1457
  • BA684A
  • SHARP IR2434
  • HA11225
  • NEC μPC1161C
  • HA1197
Some more stuff I couldn’t real the labels on yet, but most of the transistors there’s at least a dozen of.

The HA1457 seems like it’s got potential.
There are a handful of the LED level meter chips— might have some use for those I guess.

There’s also easily 70+ of these diodes. Don’t recognize them, but I’m guessing the H is probably for hitachi since there are a lot of other hitachi components in it. Anyone know about these? Just silicon, but if they’re some magical mojo clipping diode ala KoT I’ll go thru the effort of desoldering them for future use
IMG_4829.jpeg
 
chris.knudson said:
Getting ready to try again on the graphics for my phase shifter pedal. This was my first attempt at a film-free waterslide, and I baked it too hot for too long. Had to literally scrub the film off with some Isopropyl, and I seriously faded the graphic in the process. Think I'm going to sand it down, paint it, and try again.

View attachment 65552
Click to expand...
Is it called "the Golden Penis"?

Because it should be.
 
Bricksnbeatles said:
Harvested the semis from an old Japanese hifi system, just for fun, before throwing it away.

Any of these parts stand out as something worth trying out?
Transistors
  • A872
  • A965
  • C2546
  • C1775
  • C458
  • A1029
ICs
  • VC5022
  • HA1457
  • BA684A
  • SHARP IR2434
  • HA11225
  • NEC μPC1161C
  • HA1197
Some more stuff I couldn’t real the labels on yet, but most of the transistors there’s at least a dozen of.

The HA1457 seems like it’s got potential.
There are a handful of the LED level meter chips— might have some use for those I guess.

There’s also easily 70+ of these diodes. Don’t recognize them, but I’m guessing the H is probably for hitachi since there are a lot of other hitachi components in it. Anyone know about these? Just silicon, but if they’re some magical mojo clipping diode ala KoT I’ll go thru the effort of desoldering them for future use
View attachment 65554
Click to expand...

I can chart them on the DCA75 and see what they look like if you want.
 
Trying to remember how to replace some subwoofer foam surrounds. It's been at least 15 years since I last did this. What type of glue am I supposed to use anyway? Trying T-7000 cell phone repair glue this time around. Also, an Ikea Lazy Susan comes in really handy.


PXL_20240110_191228402.jpg
 
Bricksnbeatles said:
Lil babies. Just need to think of a way to drill them perfectly perpendicular to the bottomView attachment 65602
Click to expand...
Perpendicular for the shaft or a set screw? I think a set screw would be easy as you can clamp them in a vice and then turn it on its side or turn your table 90 degrees. For the shaft might be difficult. My thought would be to make some sort of a jig perhaps a molded one the knob presses into maybe even the mold itself. I have always had a hard time clamping irregular shapes without damaging them and holding small pieces on the drill press is always hard.
 
Still working on a jig to drill and tap knobs and brass inserts! Made a lot of progress, I’ll be cutting version 9 of the jig today and doing some tests! Decided to set it up so the CNC would drill the hole, now waiting on a thread mill bit so I can attempt to mill the M4 threads after the drilling operation. I’m only testing with a single knob, but will expand the jig to do 4-6 knobs at a time.

These are cast resin knobs, in case anyone was wondering.

FC19A9D8-2AA0-40AB-AB73-F5EBEABEAE1C.jpeg CB8637FB-F357-4FC4-8F66-B93E4D19A732.jpeg 7908FC8D-FD16-4FA6-863A-628983BBE810.jpeg
 
You must log in or register to reply here.
Back
Top