Hi Paul.
On my last mailing I got the BY255 current wrong.
Ken
M0KHW
----- Original Message -----
From: "Paul-Henrik" <[email protected]>
To: <[email protected]>
Sent: Sunday, November 29, 2009 2:45 PM
Subject: Re: LF: Re: Re: 4kv diode
BY255 should be a suitable building block rated 1300V PIV 3A.
Use equalizing resistors in parallell with each diode, typical values used
are
470...820kohm. Only controlled avalanche diodes can be series connected
safely
without a reverse voltage equalizing network.
Make sure you implement a healthy safety marigin, ie. don't use just as many
diodes needed to acheive the needed voltage rating. Using 3 amp diodes when
1
amp is called for is no luxury either. You don't want to hear the sound of
an
angry rattlesnake from your thunderbox... this sound is often followed by
popping and oozing electrolytic capacitors.
Good luck and please don't get zapped
Paul-Henrik
Quoting mal hamilton <[email protected]>:
Yes series for more V parallel for more I(amps) and preferable some R and
C
across each except they are really identical.
mal/g3kev
----- Original Message -----
From: David Towers
To: [email protected]
Sent: Sunday, November 29, 2009 12:37 PM
Subject: Re: LF: Re: Re: 4kv diode
Hi Mal
surely "in series" to give a 4 KV diode at 1amp ?
dave G8SZX
mal hamilton wrote:
Ken
On the serious side, use 6 x 1Kvolt @ 1A in parallel if u are stuck.
Don't get zapped
73 mal/g3kev
----- Original Message -----
From: mal hamilton
To: [email protected]
Sent: Sunday, November 29, 2009 11:28 AM
Subject: LF: Re: 4kv diode
Electric Chair Co
Zapenda Cul de sac
Hellda State
Zip73
----- Original Message -----
From: Ken
To: [email protected]
Sent: Sunday, November 29, 2009 11:04 AM
Subject: LF: 4kv diode
Hello All.
I am looking for a BY4 or BY6 or equivalent diode, BY4 4kv @ 1A,
BY6 6kv @ 1A, I have searched the web and looked in Farnell, any ideas
please.
73.
Ken
M0KHW
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