power consumption

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C Moore
Posts: 1266
Joined: Mon Oct 22, 2007 9:28 am
Location: USA, California, 94585

power consumption

Post by C Moore »

Is there a way to gauge the power consumption of a given amp.?
Would mains voltage and fuse provide any kind of formula for a decent "ball park" number.?
Thank You
eniam rognab
Posts: 763
Joined: Wed May 15, 2013 4:06 am

Re: power consumption

Post by eniam rognab »

you could pick up a Kill-A-Watt meter and plug your amp into that and then into the mains, it will tell you how much wattage any electronic item is consuming,

useful for all kinds of other stuff too! :D

$20 at home depot
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Merlinb
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Location: Burnley, Lancashire
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Re: power consumption

Post by Merlinb »

C Moore wrote:Is there a way to gauge the power consumption of a given amp.?
Would mains voltage and fuse provide any kind of formula for a decent "ball park" number.?
Thank You
If it's a class A amp then you can pretty much add up the heater power and HT power and there you have it.

But if it's a class AB amp then the quiescent power will be less than the power at full output, and by how much depends on details of the circuit. As a rough rule of thumb you might multiply the quiescent HT power by x2, then add the heater power.
C Moore
Posts: 1266
Joined: Mon Oct 22, 2007 9:28 am
Location: USA, California, 94585

Re: power consumption

Post by C Moore »

1. For 20-40 bux, those are a great Toy/Tool to have on hand. thanks.

2. Hey Merlin ..... Thank You. i will give that math a try, and see if it jives with the power rating on the back panel, and also one of those meters mentioned above you.
I am not looking for a precise measurement. Maybe somewhere in the realm in 10-15 percent. A number you could use as a guide is all.

Thanks All :)
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