[sdiy] ground & power on pad-per-hole solder breadboard

[Happy Harry]

Whether ground noise is a problem depends on if it can get into and
be amplified by a circuit. The 4016 analog switch is not likely to
show any problem. possible but not likely

H^) harry


>From: Kenneth Martinez <kmartinez at bency.com>
>To: synth-diy at node12b53.a2000.nl
>Subject: Re: [sdiy] ground & power on pad-per-hole solder breadboard
>Date: Mon, 14 May 2001 09:20:02 -0600
>
>Thanks for all the replies...
>
>I was just looking at the PCB for the MOTM-420 which I've received but not
>assembled yet...it has the +15V supply connected to an op amp, and the +15V
>trace continues to an LM13600 and then another op amp, etc ...that's what I
>meant when I said I planned to daisy-chain my power pins on my board.  My 
>vco
>plan has 3 TL07x op amps, a 4016B, and a CEM vco chip (ok, so I cheated!), 
>so
>total current draw is not too much, and perhaps I can also use this way of
>supplying power.  Of course, it wouldn't be too much more trouble to run 
>wires
>from each IC's power pin directly to one spot on the PCB either.
>
>And for ground, I was going to wire down the between the rows of ICs and
>passive components and solder them to the wire to make my ground 
>connections,
>like this (hideous attempt at ascii picture follows):
>
>   -------------------------------------------------
>           |             |                          |
>     ----------         cap    ---------------      |
>    |   4016B  |          \---|   CEM         |     |
>     ----------                ---------------      |
>                                         |          |
>   -------------------------------------------------|
>           |                                        |
>     ----------                ---------------      |
>    |  op amp  |          /---|   op amp      |     |
>     ----------          res   ---------------      |
>                          |              |          |
>   -------------------------------------------------|
>                                                    |
>                                                   gnd
>
>I'm mostly copying what I did on the solderless breadboard.  So, I suppose 
>that
>if the CEM is doing something to affect the ground, it'll affect the 4016B
>which is "downstream" on the ground connection, yes?
>
>

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