wellington
- Jun 23, 2004
- 29
- Joined
- Jun 23, 2004
- Messages
- 29
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
Hi Wellington,
I like the way that he soldered all those tiny wires to the pins of those surface-mount LSI chips. Too bad the links don't work because I would like to doo dat too with surface-mount chips.
I like the way that he soldered all those tiny wires to the pins of those surface-mount LSI chips. Too bad the links don't work because I would like to doo dat too with surface-mount chips.
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
Hi Ante,
About 1/4 of the way down, Building Main Circuit Board, I cannot go to the "wiring technic page".
About 1/4 of the way down, Building Main Circuit Board, I cannot go to the "wiring technic page".
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
Thanks Ante,
I'll get some of that tiny, urethane-coated wire, and try it out.
And I'll do the soldering before drinking coffee.
I'll get some of that tiny, urethane-coated wire, and try it out.
And I'll do the soldering before drinking coffee.
Last edited by a moderator:
Just a suggestion....For prototyping, I usually make a small pc board for all my surface mount chips which terminate to a standard dip socket pattern on the outer edges. This way, I only have to solder once and I can use the same chips over and over again in different design configurations.
Of course, for the final product, I make a board with the correct pattern.
Lots of little wires soldered to the pins of this type of chip is really asking for failure at some point.
MP
Of course, for the final product, I make a board with the correct pattern.
Lots of little wires soldered to the pins of this type of chip is really asking for failure at some point.
MP
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
Yeah, I'm not going to wire an entire circuit like that, just little SMT to DIP adapter boards.
Before surface-mount was invented, National Semi. sold LM3914 and LM3915 modules, with a black "blob" for the tiny IC and very small LEDs welded on the surface with tiny wires. The LEDs were covered with a 10-bar diffuser. I still have some. Those old LEDs are pretty dim so I might drill them out and replace them with modern high-brightness ones.
Before surface-mount was invented, National Semi. sold LM3914 and LM3915 modules, with a black "blob" for the tiny IC and very small LEDs welded on the surface with tiny wires. The LEDs were covered with a 10-bar diffuser. I still have some. Those old LEDs are pretty dim so I might drill them out and replace them with modern high-brightness ones.
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
Ante,
Seagram's? Never in the early morning when I do my wiring.
Many new ICs are surface-mount only, in new smaller packages.
How do you hand-wire ICs in "bump" packages? They have little connection bumps all over the bottom, not just around the outside.
I guess that you could connect to them upside down.
Also, how can a manufacturer IR-reflow-solder those tiny thingys.
Seagram's? Never in the early morning when I do my wiring.
Many new ICs are surface-mount only, in new smaller packages.
How do you hand-wire ICs in "bump" packages? They have little connection bumps all over the bottom, not just around the outside.
I guess that you could connect to them upside down.
Also, how can a manufacturer IR-reflow-solder those tiny thingys.