[sdiy] [OT] LM13700 spotted in commercial product of big Manufacturer

[mark verbos]

I don’t know if I would win that, but I know that since I switched to surface mount I kick every kid’s ass at Operation.

Mark



> On 18. May 2022, at 09:47, Paul Perry via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> I would pay good money to watch a soldering race (tools and component sizes optional).
> First to a working unit wins. The original Olympics were relevant to the society of the day, why not now?
> (This can't be extended to creating software synths, because none of these have ever reached a final bug-free state.)
> 
> paul perry Melbourne Australia (Doing it Davis's way, but without sockets.)
> 
> On Wed, May 18, 2022 at 8:58 AM Quincas Moreira via Synth-diy <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>> wrote:
> Me too Mike, but Dave actually etches home made PCBs!
> 
> On Tue 17 May 2022 at 13:59 Mike Bryant <mbryant at futurehorizons.com <mailto:mbryant at futurehorizons.com>> wrote:
> I used to just solder thru hole PCBs from the top first - the solder leeches through happily enough.  It's only axial capacitors and some sockets that can't be done this way.
> 
> 
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org <mailto:synth-diy-bounces at synth-diy.org>] On Behalf Of David G Dixon via Synth-diy
> Sent: 17 May 2022 19:13
> To: 'mark verbos'; 'Roman Sowa'
> Cc: synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
> Subject: Re: [sdiy] [OT] LM13700 spotted in commercial product of big Manufacturer
> 
> Mark Verbos said:
> 
> "I'm with Roman, I think building a big through hole board belongs in one of the circles of hell. All that flipping over and having parts fall out, clipping leads, burning my fingers as I try to get the parts tight to the board, etc."
> 
> You are doing it wrong.  I never "flip the board over" -- I solder all parts that have equal height at the same time, and place them against a small piece of wood before setting the whole thing down.  It's all about order of
> operations: 
> 
> 1) jumper wires
> 2) diodes
> 3) resistors
> 4) IC sockets
> 5) ceramic caps
> 6) film caps
> 7) TO-92 packages
> 8) electrolytics
> 
> If, in that rare circumstance, I need to flip the board over before all the joints are soldered, then I simply pick up the piece of wood and invert the board into my other hand -- nothing ever falls out.
> 
> Also, if I do drop a part on the floor (a very common occurrence), then I can generally find it and pick it back up.  Not so with an SMD part -- once it hits the floor, it is in the Delta quadrant, sinking in Captain Janeway's coffee.
> 
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> -- 
> 	
> Quincas Moreira
> Director | QMA
> mobile:  5534988825 <tel:5534988825>
> site:  quincasmoreira.com <http://quincasmoreira.com/>
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