On Oct 29, 2006, at 5:29 AM, pentalab wrote:
To prove Rich's observation about caps blowin up when the eq
resistor opens.... I'm proposing a test. Using a variac.... dial
it up so +400 vdc appears across the string of 8 x caps [50 v per
cap] THEN open one resistor [the one at the cold end]... then
watch the V go up on the cap with the open resistor.... and watch the
other 7 x cap's Voltage.... drop.
This way... the cap with the open resistor should hit +400 vdc....
and no big bangs. IF this is the case... how come u never see it
mentioned in the arrl handbook/orr's books ?
The League seems to be somewhat less than serious about thoroughly updating and improving the Handbook. Example: In 1994 I got a letter from the League asking me if I was interested in improving the Handbook. At first I laughed, but then I foolishly said yes.
Dave Newkirk, an ex-employee of the League, told me that correcting errors made by a guru-status ARRL employee who made an electronic mistake in a publication is virtually impossible until well after he makes the Silent Keys column.
Should be in big
black print on page 1 of the HV pwr supply section..... or what's
left of it. The league loves publishing books.
Selling books, Jim -- which is how the powers-that-be in Newington get the money to Direct the so-called Directors. Here's how it works: Directors receive varying amounts of "shaking hands money" for going to Hamventions. Those Directors who rock the boat more receive less shaking hands money, and Directors who rock less get more money. It's sorta like what goes on in the RNC and the DNC.
... how about a super
thick hardcover one... just for linears ? .... done right this
time.... nah.. they would screw it up. YC-156... nah... u need one
of those $7500.00 Acoms.
Later... Jim VE7RF
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