Permanent alternative to breadboard, without chemicals?

strantor

Joined Oct 3, 2010
6,875
The new audiophile "must-have" headphone amp?
IDK, you'd have to ask Ron H about it.
Build this with 74HC14, 2.2k, and a trimmer cap that includes 10pF within its range. Vcc must be 5V, and build the breadboard on copperclad with a ground plane. The "dead bug" technique will minimize stray capacitance (see example below). You should be able to get at least 12.6MHz.
DON'T use a solderless breadboard. Their stray capacitance is too high.
 

tjohnson

Joined Dec 23, 2014
611
I used perfboard (without copper pads) for my recent USB powered speaker project, and it worked well. Besides eliminating the need to drill holes, it avoids the problem of the copper pads melting when soldering and decreases the likelihood of a short. I also prefer it to stripboard because it's not necessary to scrape strips of copper off in order to build a circuit on it.
 

KJ6EAD

Joined Apr 30, 2011
1,581
I usually mark trace cuts with a permanent (alcohol) marker, review for errors, then cut with a small ball engraver bit on a Dremel using a low angle sweeping motion to cut across the strip or trace. I clean the debris and any remaining marker off with a stiff nylon brush and alcohol. This method leaves wide, cleanly routed, easily seen cuts that won't easily short or arc over.
 

GopherT

Joined Nov 23, 2012
8,009
I usually mark trace cuts with a permanent (alcohol) marker, review for errors, then cut with a small ball engraver bit on a Dremel using a low angle sweeping motion to cut across the strip or trace. I clean the debris and any remaining marker off with a stiff nylon brush and alcohol. This method leaves wide, cleanly routed, easily seen cuts that won't easily short or arc over.
If you are going to mark them with a sharpie, why not drop it in a dish of FeCl3 solution. Done in 10 minutes.
 

KJ6EAD

Joined Apr 30, 2011
1,581
You can't be serious. That would require masking everything but the trace cuts.

Should we all just stop using pad-per-hole, perf and stripboard and design a PCB every time we want to prototype a small circuit? I don't think so.
 

tjohnson

Joined Dec 23, 2014
611
Although using the tool or a 1/8" drill does it in a second.
I have never had to 'scrape' it?
Max.
I guess I had Veroboard in mind more than stripboard, although according to Wikipedia the two are fairly synonymous.

I also read on Wikipedia:
Stripboard is not designed for surface-mount components
I don't understand what it is designed for then? Is the same thing true of perfboard?
 

dl324

Joined Mar 30, 2015
18,326
I guess I had Veroboard in mind more than stripboard, although according to Wikipedia the two are fairly synonymous.
A couple problems with Wikipedia is anyone can post anything and make edits. That means you can't believe everything you read there; though I've found most information I've read there to be correct. Some schools don't allow citing anything from Wikipedia as fact...
I don't understand what it is designed for then? Is the same thing true of perfboard?
Stripboard was designed before the advent of what most think of as surface mount components, but I see no reason why one would think it can't be used for surface mount. There are surface mount to SIP adapters that are basically stripboard without holes, like this:
smt2sip.jpg207394.jpg

The terminology used for prototype boards is sometimes ambiguous. When I hear perfboard, I think of a board with holes and no copper. Then there's pad-per-hole, pad-per-multiple-holes, strip board, clad sheet with holes, strip board with bussing, ...

Some of the confusion comes from people using the generic term veroboard to mean strip board, but Vero also manufactures plain and other varities; all referred to as Veroboard on their website. However, they use qualifiers such as "Veroboard stripboard" or "Plain board Veroboard", so it's the people using veroboard generically that are causing the confusion.

Perfboard (meaning no copper) could be used for SMD (or SMT if you prefer) if you use copper strips; adhesive or not. I have several widths of adhesive backed copper I use for board repair. Some was originally sold for that purpose and some was sold for stained glass work or snail control in gardens.
 
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dl324

Joined Mar 30, 2015
18,326
Should we all just stop using pad-per-hole, perf and stripboard and design a PCB every time we want to prototype a small circuit? I don't think so.
It boils down to personal preference. Once I re-discovered etching PCBs 10 years ago, I stopped using protoboard and make a board; even if it's a one-off.

BTW, can someone explain why it's "one-off" instead "one-of [a kind]"?
 
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