ORIGINAL MESSAGE:
On Sat, 18 Dec 2010 14:26:29 -0800, Vic K2VCO <vic@rakefet.com> wrote:
>
>Some of my happier mods were the addition of a glitch resistor and
>back-to-back 1N5408
>diodes across the meters,
REPLY:
Just a word of advice - back to back diodes across the meters adds zero
protection. Diodes don't conduct until the voltage across them reaches
about .6 volts and by then the meters will be toast. You need to add a
resistor in series with the meter of such value that the voltage across
the meter + resistor equals about .6 volts when the current is just
above full scale. Then place the diodes across the combination of meter
+ resistor. Use heavy diodes such as 6A10 and your meters will be nearly
bulletproof.
73, Bill W6WRT
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