[Test-Equipment] Source for 1% capacitors?

[J. Forster]

I suggested just paralleling a couple of standard values and trimming with
a silver-mica on the GenRad Group:

I just wrote used a little Excel spreadsheet:

 A      B       C
---------------------
C1   | =1/C1 |
---------------------
C2   | =1/C2 |
---------------------
C3   | =1/C3 |
---------------------
     |  Sum  | =1/Sum
---------------------

This makes it easy!

-John

===========



> You might also buy a handful of good quality 10% rated 0.022 and 0.039 and
> test until you find three within 1% of what you need.  However, I would
> probably buy half the handfuls from one vendor and the other half from
> another
> as any given lot is going to tend to cluster to one side or the other of
> nominal.  And of course you have to already have a tester of adequate
> accuracy.
>
> In a message dated 3/28/2011 11:02:54 PM Central Daylight Time,
> radiotest at plymouthcolony.net writes:
>>
>> >I have a GR-1617A capacitance bridge that has a detector board
>> >designed for 50Hz operation (the rest of the unit has 60Hz
>> >boards/modules).  I can convert the detector to 60Hz by changing
>> >three capacitors.  I need two 0.020uF 1% 100V and one 0.040uF 1% 100V
>> caps.
>> >
>> >Anyone know where I could get these?  They are odd values and not
>> >readily available.
>>
>> The manufacturer's code is for the Sprague factory in North Adams,
>> but the manufacturer's part number looks like a GR special. You might
>> be better off trying to find a 60 Hz detector board.
>>
>> Have you looked at any of the usual suspects, such as Digikey?
>>
>> Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
>> http://plymouthcolony.net/starcity/radios/radtop.html
>>
>
> Robert & Susan Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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