Got it, Mike and Charlie - will do something like that - reverse diodes across the input, if nuthin' else!
> From: [email protected] > To: [email protected]; [email protected]; [email protected] > Date: Sun, 25 Aug 2013 16:21:05 -0400 > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > That's always worked for me, Mike! The bit of resistance that I suggested > that Jim add ahead of the FET gate and the diodes serves the same purpose as > your incandescent lamp - but I expect that the lamp is more rugged and > forgiving. > > 73, > Charlie, K4OTV > > -----Original Message----- > From: Topband [mailto:[email protected]] On Behalf Of Mike > Waters > Sent: Sunday, August 25, 2013 4:15 PM > To: James Rodenkirch; topband > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > Ever since I added back-to-back 1N4148's between the preamp's input and > ground many years ago, I have never lost a transistor in my preamp. Before > that, it seemed that I was replacing it after nearly every thunderstorm. > > A couple of years ago I changed it a little: I added a small incandescent > lamp in series with the preamp input. At the same I changed from just two > to four of the same diodes in series/parallel. > > There are other ways as good or better than this, but this works for me. > > 73, Mike > www.w0btu.com > > On Sun, Aug 25, 2013 at 10:13 AM, James Rodenkirch > <[email protected]>wrote: > > > Any ideas on a front end protection circuit for a preampl? > > > _________________ > Topband Reflector > > _________________ > Topband Reflector _________________ Topband Reflector
