🚀 go-pugleaf

In article <bh4575$u4a$1@slb9.atl.mindspring.net>, 
markrobREMOVE@mindspring.com mentioned...
> 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.

I had a cheap scanner that used semi's on the input.  The first 
lightning bolt many miles away zapped them.  Got out the soldering 
iron and replaced.  Same thing again, later.  Pi$$ poor design.

Don't waste your time.  Use an inductor that has nearly zero ohms DC 
resistance, or your front end will suffer the same fate.

> 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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