[SignalOne] 8072 and driver damage

Mon, 11 Nov 2002 17:53:14 +0000

At 17:08 2002-11-09,
W2AGN <[email protected]> wrote:
>Bad news :-(  I have no drive. Someone suggested the arcing might blow
>the driver transistor, and I guess it did.

------

The driver and 8072 circuit shown in

HF Circuits for a Homebrew Transceiver,
QEX, Nov/Dec, 2001, 20-42.

prevents driver damage from PA faults. This simple
two-component protection can easily be added
to a CX7.

The article also has an 8072 screen protection
circuit, an 8072 PA tank protection circuit, and other
information applicable to the CX7.

Information about obtaining copies of QEX articles
may be found at http://www.arrl.org/qex/#copies,
http://www.arrl.org/members-only/artcopies.html
and [email protected].

73,

Mark, K5AM    DM62ni

-----
Mark Mandelkern
Las Cruces, New Mexico, USA
[email protected]
First callsign: W9ECV, Milwaukee, 1948.
10 band DXCC confirmed. 134 countries on 6 meters.
Homebrew station:
<http://www.zianet.com/k5am/ncj/ncj.html>