17 Dec
2010
17 Dec
'10
8:30 p.m.
On December 16, 2010 05:39:21 pm you wrote:
On Thu, 2010-12-16 at 14:25 -0800, Dan Kegel wrote:
Yeah, the trouble with lead-free solder is that EVERY joint looks cloudy
cold and bad, even if it's good. Very hard to tell if it's a good joint.
A bit frustrating from technician viewpoint.
Different type of product as well. Choose carefully.
When repairing, Mfr A says use this type, Mfr B says use that type.
Leaded solder still available here, but can't be used in new products.
If all else fails, use chewing gum and wrappers, like McGyver!
Tim.
On Thu, Dec 16, 2010 at 12:41 PM, Tim E. Real
<termtech(a)rogers.com> wrote:
My first system was, IIRC, an Intersil 6100 (single-chip pdp-8 clone)
that my Dad designed and I wire-wrapped. It had a four digit LED
display and a keypad. I wrote my first real-world-affecting
program on it by using a 74c06 as a speaker driver, controlling it
with a single bit, and then flipping that bit with a hand-coded loop
to make all kinds of sirens. Good times!
- Dan
Aaaaaaaaaaargh, I had an amp from an established company, can't remember
this company, everything was connected by wire-wrapping, so indeed a
good discrete circuit, but the wire-wrapping did cause defects. Btw. I
prefer good old leaded solder, but leaded solder in Germany isn't
allowed anymore. We should start to wire-wrap all electronic devices for
our politicians here :p.
Cheers!
Ralf The amiga
is actually fairly late model here folks, I started with a
quest super elf I built from a kit. Circa '77.
1802 CPU fan here too. Mine was RCA COSMAC VIP 1802.
Added 3 channel sound (Famous G.I. AY3- chip) and
colour graphics with T.I. 9918 chip, after read Circuit Cellar article
on it. Oh what fun...