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PICList Thread
'PICProto Dual components?'
1995\01\26@005320 by John M. Johnson

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I have one of the PICProto Boards that Parallax sells and have lost the
sheet of paper that give the recomenned caps.  specifically I need the
caps for C6 adn C5 for an XT osc.  If anyone has these I would appreciate the
info.

later
       John
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John Johnson  Team OS/2 member | spam_OUTjohnsonjTakeThisOuTspambga.com | .....johnsonjKILLspamspam@spam@utdallas.edu
                  C&H Technologies VXI Plug N' Play member
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And the Seventh version of OS/2 raised into the air its bow of blue steel and
cried," It. Is. Done."  Around him lay Bill Gates and Microsoft apps.  Their
evil in this world at an end.
                                       Revelations of InfoWorld, Oct 11 1994

1995\01\26@013636 by Lance Walley

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On January 25, John Johnson wrote:

>I have one of the PICProto Boards that Parallax sells and have lost the
>sheet of paper that give the recomenned caps.  specifically I need the
>caps for C6 adn C5 for an XT osc.  If anyone has these I would appreciate the
>info.


John,

The paper from MicroEngineering Labs (the PICProto maker) recommends a
value of 5-22 pF.  The Microchip data sheet (for 5x parts) recommends
values of 15-30 pF for C1 (connected to OSC1) and 15-300 pF for C2
(connected to OSC2).  If you're running at 1 MHz, they recommend 15-30 pF
for both.  At 4 MHz, they recommend 15 pF for both.

Hope it helps...


------------------------  Lance Walley  ---------------------------
                         Parallax, Inc.

1995\01\26@015748 by John M. Johnson

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On Wed, 25 Jan 1995, Lance Walley wrote:

> John,
>
> The paper from MicroEngineering Labs (the PICProto maker) recommends a
> value of 5-22 pF.  The Microchip data sheet (for 5x parts) recommends
> values of 15-30 pF for C1 (connected to OSC1) and 15-300 pF for C2
> (connected to OSC2).  If you're running at 1 MHz, they recommend 15-30 pF
> for both.  At 4 MHz, they recommend 15 pF for both.
I acutally took those for granted to be the same as the data book so i
have those.  What I was looking for is the electrolytic ones for the
regulator.  C5 looks like a noise cap for the incoming V into the 7805 and
C6 maybe one off the reg.  I remeber seeing it in a little box on the
sheet that came with in that was on the left side just below the
schematic of the board.

later
       John
-----------------------------------------------------------------------------
John Johnson  Team OS/2 member | johnsonjspamKILLspambga.com | .....johnsonjKILLspamspam.....utdallas.edu
                  C&H Technologies VXI Plug N' Play member
-----------------------------------------------------------------------------
And the Seventh version of OS/2 raised into the air its bow of blue steel and
cried," It. Is. Done."  Around him lay Bill Gates and Microsoft apps.  Their
evil in this world at an end.
                                       Revelations of InfoWorld, Oct 11 1994

1995\01\26@020617 by Lance Walley

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{Quote hidden}

Sorry about that; that was pretty stupid.  The info sheet recommends the
following caps when using a TO-220 7805:

    C5:  0.01 - 0.1 uF
    C6:  0.1 - 10 uF


------------------------  Lance Walley  ---------------------------
                         Parallax, Inc.

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