Re: Voltage drop in power cable

[Joel R. Hallas]

I have always used a power distribution strip in my system.

I don't think I've seen my solution to the drop problem mentioned. While
there is a practical limit to the wire size usable in APP connectors, with
excess positions on the power strip, multiple cables can be used.

I ran two heavy (I forget the wire size) cables from my supply to the strip,
thus cutting the cable drop in half on the longest path (my strip was right
behind the equipment). No further issues

Regards, Joel Hallas, W1ZR
Westport, CT




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[JOE-2]

For the purest, a possible fix would be to use a power supply that uses
sense leads to regulate the output voltage like my old Lambda power
supply does. I don't use the Lambda for the ham shack, but this would
solve the problem. The sense leads would be connected as close to the
transceiver as possible. They send a sample of the voltage at that point
back to the power supply so the power supply can properly regulate the
voltage at that point. The sense wires are typically small gauge wire
because they don't carry much current at all. For safety, the sense lead
should be fused at the voltage source. I would only use the supply to
power the transceiver, or make sure all equipment is powered from the
same point as the transceiver to avoid over-voltage to other equipment.

Joe, K1ike
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[ke9uw]

I wonder what the time constant is for that sense to respond...say to CW or SSB

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Apr 27, 2020, at 6:48 AM, Joe <[hidden email]> wrote:
>
> For the purest, a possible fix would be to use a power supply that uses sense leads to regulate the output voltage like my old Lambda power supply does. I don't use the Lambda for the ham shack, but this would solve the problem. The sense leads would be connected as close to the transceiver as possible. They send a sample of the voltage at that point back to the power supply so the power supply can properly regulate the voltage at that point. The sense wires are typically small gauge wire because they don't carry much current at all. For safety, the sense lead should be fused at the voltage source. I would only use the supply to power the transceiver, or make sure all equipment is powered from the same point as the transceiver to avoid over-voltage to other equipment.
>
> Joe, K1ike
> ______________________________________________________________
> Elecraft mailing list
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