TenTec
[Top] [All Lists]

[TenTec] Ground Loop ?

To: <tentec@contesting.com>
Subject: [TenTec] Ground Loop ?
From: cherry@neta.com (Jim FitzSimons)
Date: Mon, 06 Nov 2000 09:37:00 -0700
I am using the digipan interface on my Pegasus now. It has a transformer
for the audio and a optical isolator for the PTT. That makes sure that
no
AC gets into the input. Here is a link:
http://members.home.net:80/hteller/digipan/
You can build the same circuit yourself.
Peace, Jim FitzSimons W7ANF

Bill_Ames@hyperion.com wrote:
> 
> You should be able to implement your control interface using an optical
> isolator. This eliminates the need for a common ground. Basically you have a 
> led
> that is turned on/off and a photo transistor that turns on/off. Not expensive.
> 
> Bill Ames
> KB1LG

--
FAQ on WWW:               http://www.contesting.com/FAQ/tentec
Submissions:              tentec@contesting.com
Administrative requests:  tentec-REQUEST@contesting.com
Problems:                 owner-tentec@contesting.com


<Prev in Thread] Current Thread [Next in Thread>