From: Howard D Rubin (firstname.lastname@example.org)
Design of this voltmeter can be as simple as a zener diode, resistor, and
0-10 volt meter in parallel with the resistor, or a lot more complicated
if higher precision or accuracy is needed. What are your requirements?
Some parameters to decide are:
power supply available
Howard Rubin, N3FEL
Penn Wireless Association
On Sat, 13 Sep 1997 09:02:05 -0400 K4AHK@ix.netcom.com writes:
>A number of years ago, there were a few articles published about
>building an expanded scale voltmeter for checking batteries. The
>used a zener diode so that the left end of the scale was something
>8 or ten volts and the right end of the scale was around 15 volts.
>anyone know a source for this info? Was it published in the QRP
>I saw some questions go by this list a while back asking about the
>availability of good contest software for QRP contests but I never saw
>an answer. I am using a 386PC with Windows 3.1. Any suggestions?
>Bill - K4AHK
Search QRP-L Archives
QRP-L Archive |
[ 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 ]
This archive was generated by hypermail 2b29 on Fri Jun 02 2000 - 11:34:23 EDT