Ultra Low Current BIRD-43 Peak Meter

How often you try to use your Bird 43 and it’s out of batteries?
Well, this circuit will work more than 5 years continuous operation with same batteries.
No more worries about forget Peak Meter ON.

This new board adaptor for the Bird 43 Wattmeter will read the peak power from your radio/amp

with accurate reading and a full needle adjustments with 2 potentiometers.

This new design, using a ultra low current Op Amp, 600nA, and a ultra low current LED* flashing 6uA

will drain from battery even lower current than the natural intrinsic discharge of batteries.

More than 5 years battery life!

Led flash 10 mili-seconds every 2 seconds*

Adjustment must be done with a steady CW carrier wile adjust RV1 to have same reading with Peak ON and Peak OFF

Then, adjust RV2 to set the needle decrease time at your wish.