Re: HV protection for receiver input?

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#2208

From: Mark Robinson
Date: Sun, 10 Aug 2003 00:57

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You should be able to put a parallel pair of low capacitance Silicon diodes
across the receiver input. since the receiver is looking for microvolts of
signal and not 600 millivolts.  You also use an RF choke to ground. This
will provide a low dc impedance to ground and a high rf impedance at the
frequency of operation.


Mark

"Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6wsmoemeeu.fsf@saul.cis.upenn.edu...
> "Gym Bob" <NoThanx@notspam.com> writes:
>
> > Not sure about the Triac but zeners are the fastest and the gate of the
> > Triac should only act like a diode until the whole thing turns on and
backs
> > it up.
> >
> > Zeners are usually used in parallel with MOV's for the speed, beating
the
> > MOV, of course.
>
> Right.  Triacs/SCRs are probably in the microsecond range.  But the zener
> should accept the initial surge, and possibly all of it! :)
>
> --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
>  Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
> +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
>         | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html
>
> Important: The email address in this message header may no longer work.
To
> contact me, please use the Feedback Form at repairfaq.org.  Thanks.
>

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From: "Mark Robinson" <markrobREMOVE@mindspring.com>
Newsgroups: sci.electronics.design,alt.engineering.electrical,sci.electronics.repair,aus.electronics
Subject: Re: HV protection for receiver input?
Date: Sat, 9 Aug 2003 20:57:40 -0400
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