[Test-Equipment] AIL 460 Sig Gen update and questions

[Dennis Wade]

Good idea...and the other two caps bypassing Vcc to ground are marked "68",
and just below it a "+" (I'm assuming that indicates the plus terminal),
and next to the + is a 6.

68 uf seems a lot for a bypass cap on this 5V line, so maybe 6.8?  And the
6...6 volts?  That seems cutting it close on a 5 V buss, but...

        Thoughts?

              Dennis


On Sat, May 31, 2014 at 1:20 PM, KA4INM radio <ka4inm at gmail.com> wrote:

>   On 05/31/14 15:58, Dennis Wade wrote:
>
>          I've made some progress in my '460 adventure, as Chuck put it...I
>> too was feeling brave. :)
>>
>
>           Now I have a couple of basic questions:
>>
>
>            1.  What is a typical value for a bypass cap in this
>> application?
>> Probably not critical...and I'm thinking at least 25V cap, but any wisdom
>> here?
>>
>
>   Look every where in the unit for a similar sized capacitor in a similar
> application (Vcc bypass) and see what it's values are,
> usually on the same buss they are all the same part number and
> specification.
>
>
>             2.  For anyone who knows these things...any "must check" items
>> for collateral damage?  How likely this is an isolated failure?
>>
>
>   Extremely likely. (isolated) That part failed.  Measure the resistance
> of that buss to ground with an Ohmmeter (with the correct polarity) and
> look for another short, there should be none.
>
> --
>   Ron  KA4INM - Youvan's corollary:
>                 Every action results in unwanted side effects.
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"If they trust you, it is an extraordinary privilege, and you simply can't
abuse it."
      - A. Alan Post  1914-2011.  California Legislative Analyst 1949-1977.

-------------------------
Dennis L. Wade
KG6ZI
Carmichael, CA