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<div><span class="gmail_quote">On 1/1/06, <b class="gmail_sendername">harrybissell</b> <<a href="mailto:harrybissell@prodigy.net">harrybissell@prodigy.net</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Why I don't use breadboards - by H^) harry<br><br><br>He got a commercial prospect to come and see the design. Of course the
<br>solderless breadboard chose that time to fail. </blockquote>
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<div>His mistake was not committing the circuit to perfboard before he met with the commercial interest</div><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">2) Long leads : make adding effective bypass capacitors close to a chip,<br>difficult.</blockquote>
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<div>This is easy for dual opamps with power at pins 4 and 8. Just use a jumper from ground to the row above pin 8 and below pin 4. The long leads from the cap? Clip 'em.</div>
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<div>I'm working with a professor at the Art Institute of Chicago and he hates breadboards. I couldn't understand why until I tried one there. They are old and abused. New breadboards don't give me those problems. </div>
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<div>A 23 year old breadboard!? Wow. I never guessed they could last so long. When my boards (I have a bunch) develop bad tracks, are hard to insert components, or are melted(!) , I just spend five bucks for a new one.</div>
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<div>I can see some circuits would suffer badly from the capacitance, but this has happened very seldom (for me at least). </div>
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<div>I learned to always breadboard first from being disappointed by the component and/or feature choice for some (most) purchased pcbs. In fact, now I would never build a circuit, no matter who it was from, without building it on breadboard and testing/tweaking/experimenting with it first. By the time I'm finished with that, I usually don't want to use the pcb anymore because the circuit might have changed (evolved/devolved) to such a point that the pcb doesn't help much (for finished circuits, I'm a perfboard kind of guy).
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<div>The breadboard is/can be so fast. Instant gratification. Someone posted a heads-up yesterday on a newer Ken Stone design: Slope Detector. In a half hour it was on the breadboard and being tested. It does have a problem which may be caused by a bad connection on the breadboard. First step after the usual checking for user mistakes is to rebuild it on another board (no problem for such a simple circuit). Obviously for bigger circuits this can be a chore. But this is my school and my educational process.
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<div>That's my 2cents,</div>
<div>peng</div>
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<div><a href="http://home.comcast.net/~peng5002/mainpage.htm">http://home.comcast.net/~peng5002/mainpage.htm</a></div>
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