[hpsdr] Adjusting Pennywhistle quiescent current
Graham / KE9H
KE9H at austin.rr.com
Wed Nov 25 07:49:19 PST 2009
Pete:
I use a digital ammeter on a 10 A scale. That provides resolution to
about 10 mA steps,
which is plenty accurate. Since the quiescent current will increase
about ten percent
from cold to hot, great precision is not required.
--- Graham / KE9H
==
n3evl wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> My digital meter will only measure DC current up to 200mA unless I use
> the very coarse 10A scale. In doing so, I lose precision and cannot
> accurately set the quiescent current as described in the
> instructions. What kind of meter is suggested to set the 470mA/920mA
> accurately?
>
> Pete, N3EVL
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