You NEED DC coupling, else you are not going to get correct power readings. For example, if you choose AC coupling to measure a battery running a 300W load and your scope is going to show about 0 power! So is this battery now just free energy? Obviously not.
If there are any DC biasing in that circuit, it will not show up with the AC coupling mode. And DC biasing can obviously transfer power.
Though I think there is still something to your circuit Luc..... your generator and Watt Meter still did not show any power drain while powering your sizable resistor load. But you want to make sure you do the scope measurements as correctly as possible. Looking forward to your new measurements.
And there is no reason to invert that channel 2 as some people try to tell you.... that is just pure nonsense!!!
Keep up the great work.
If there are any DC biasing in that circuit, it will not show up with the AC coupling mode. And DC biasing can obviously transfer power.
Though I think there is still something to your circuit Luc..... your generator and Watt Meter still did not show any power drain while powering your sizable resistor load. But you want to make sure you do the scope measurements as correctly as possible. Looking forward to your new measurements.
And there is no reason to invert that channel 2 as some people try to tell you.... that is just pure nonsense!!!
Keep up the great work.
Originally posted by Mario
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