[Elecraft] Astron 25 amp supply

Geoffrey Mackenzie-Kennedy gm4esd at btinternet.com
Tue Sep 29 06:41:24 EDT 2009


Thom,

A PSU rated for 25 amps should be adequate in terms of current for a 100 
watt transmitter. Something else that must be considered, especially if SSB 
is used, is that the PSU's output voltage should remain constant at all 
transmitter power levels. Also the DC supply voltage measured at the rig's 
DC input connector should remain reasonably constant under the same 
conditions of current draw. With a well regulated PSU supplying +13.8 VDC 
and low resistance connecting leads and connectors, the voltage droop as 
seen at the rig end can be held to 0.5 volts or less.

73,
Geoff
GM4ESD


----- Original Message ----- 
From: "Thom LaCosta" <k3hrn at zerobeat.net>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, September 29, 2009 10:21 AM
Subject: [Elecraft] Astron 25 amp supply


> Can I use an Astron 25 amp supply a K3-100?
>
> Thanks
>
> Thom




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