[TCML] Looking for a 1.8nF 50V (Polypropylene 2%) Cap

[Carl Noggle]

Hi---

Try Richardson Electronics for small quantities of these polypropylene caps.

---Carl





> Hi Gary,
>
> Thanks for the info. Sometimes I get a bit too strict on adhering specifically to the specifications on finicky projects like these. Especially with my history with 555 timers I'll keep scrounging around and see what I can't find.
> Oh, nearly forgot, I managed to grab a TLC555 instead of a LMC555, is there any difference? The part numbers match up, but I'm still unsure...
>
> Thank You,
> Brandon
>
> On Mar 6, 2011, at 9:47 AM, Gary Lau<glau1024 at gmail.com>  wrote:
>
>> Hi Brandon,
>>
>> There's nothing sacred about the 1.8nF value.   IF you were planning on
>> using the frequency dial image that Terry provided, it would be a good idea
>> to use exactly the same components that Terry did, but even then, I would
>> recommend doing your own dial calibration with a frequency counter, since
>> audio pot's are not typically high-precision devices.  My 10K pot measures
>> 9.38K.
>>
>> Otherwise, you can use anything remotely close.  For the cap. I used a
>> 1600pF 5% mica cap.  No reason you couldn't series-parallel whatever you
>> have in your junk box to achieve something close.  For the bi-color LED, I
>> just used two red LED's back-to-back.  Probably the only really important
>> thing is that the cap be temperature-stable, not ceramic.
>>
>> Regards, Gary Lau
>> MA, USA
>>
>> On Sat, Mar 5, 2011 at 10:58 PM, Brandon Hendershot<
>> brandonhendershot at gmail.com>  wrote:
>>
>>> Hi Everyone,
>>>
>>> I'm working on a copy of Terry's Tesla Coil Tuner
>>> (capturedlightning.org/hot-streamer/TeslaCoils/Misc/TCT/TCT.htm) and
>>> there's this capacitor in the parts list (1.8nF 50V Polypropylene 2%)
>>> and I can't find anyone NOT selling them in bulk... So, I imagine
>>> somebody else had the same problem and actually bought some, lol. Do
>>> we have any of those folks here that are willing to sell me an extra
>>> cap?
>>> That, or does anybody know of some mysterious vender hiding in the
>>> deep dark depths of the internet that's selling them to the general
>>> population? Anything will do really, just as long as I don't have to
>>> go buy a hundred just to use the one and turn around and try to resell
>>> the others, lol.
>>>
>>> Thanks List,
>>> Brandon (H. in case the other Brandon decides to chime in :))
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