The vast majority of line powered clocks use
the grid frequency for timing, both analog and digital. It's great
because I can set all the clocks and they all stay exactly in sync
with one another.
Oh, they still will. They'll just all be wrong.
- John
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On Jun 30, 8:53 am, JohnK yend...@internode.on.net wrote:
Generally, old electrolytic caps that have just been allowed to sit can be
re-formed and henceforth operate properly.
That's a bit of a sweeping statement. Of the kit I've rebuilt, the
electrolytics have typically dried out, and thus
Isn't it that electrocaps that ar strongly over rated in working voltage,
wear out sooner as caps that are working close below the max voltage? This
due to electrochemical degradation of the electrolytic dielectrum. Actualy
the same as due to long storage.
eric
-Original Message-
From:
| I have had more trouble with 'modern' caps. ...
|
| Speaking of modern - a capacitor characteristic often overlooked in
current
| times is the manufacturer specified operating voltage RANGE. Using a
cap
| well below the marked voltage causes it to do two things; lose
capacitance
| and also
Depends on def of 'old-timer' - I am 60 :-)
The caps I mentioned caused probs in mid1990s . The life-vs-volts was
available in the manufacturer data that the Lab used. Often very detailed
spec sheets were sourced from the manufacturers. And capacitor purchases
were in the millions - promoted
This is a perspective that I'm very familiar with and it is a popular
one on the Swan users list. I think it has to do with the preferred
end-result:
1) A restoration
or
2) A fix
My first HF rig was a Swan 500c that was given to me broken about a year
ago. My only previous experience with
From what I have heard that electrolytic capacitor chemical
ingredients are treated like the Holy Grail by the capacitor
manufacturers. The formulations are protected since this can make or
break a manufacturer. The voltage and capacitance of course is
determined by the chemical composition of
On Jun 30, 1:01 am, JohnK yend...@internode.on.net wrote:
- Original Message -
Subject: Re: [neonixie-l] Re: US power grid frequency tests.
The vast majority of line powered clocks use
the grid frequency for timing,
All this talk of line frequency reminds me of when we attached a
On 6/30/11 8:25 PM, A.J. Franzman wrote:
All this talk of line frequency reminds me of when we attached a 'powerful'
audio sig gen to the lecture room clock back in 1968. Got us 10 mins less
boredom.
I always wondered just how
it was done, and the size of the hardware that would be required.
Howdy Group! Didnt realize the yahoo group closed. Glad to be back
here. I would like to make a clock using ZM1050 tubes, can anyone help
with a kit of know of any that would work for sale. I also need for
sockets for ZM1050 tubes. Thanks in advance!
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You must be a real phone fan to know that proper ring generation is at 20Hz,
I'm impressed!
On 2011 Jun 30, at 20:34 , David Forbes wrote:
I used to own an HP 201B audio signal generator. It was powerful enough to
ring a telephone bell, providing 100V RMS at 20 Hz.
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You received this
On 6/30/11 9:30 PM, Wayne de Geere III wrote:
You must be a real phone fan to know that proper ring generation is at 20Hz,
I'm impressed!
On 2011 Jun 30, at 20:34 , David Forbes wrote:
I used to own an HP 201B audio signal generator. It was powerful enough to ring
a telephone bell,
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