allen lumley wrote:Len Ovens : You have now on the side of a great divide, while I would find it difficult to explain the way a 'joule thief' works to a layman, that appears to be simple
as compared to a joule ringer, I think most people over 30 years will have trouble with this, can you break it down so that we can find a common thread ? Big AL
Markus Loeffler wrote:I am wondering about the power consumption as well. The watt meter somehow does not play well with the high frequency pattern of the load. Here is some math how we can solve the problem -- it only involves measuring time till the capacitors are fully discharged. The amount of charge in a capacitor can be calculated using this formula:
J = 1/2 * C * V^2 (J = Joules, C = Farad, V = volts)
example: Cap with 12V and 8000uF --> 0.5 * 8000x10^-6 * 12^2 = 0.676 Joules
To translate joules to watt --> W = J/s
So you have to calc the energy J for your setup and count the seconds to discharge them.
Then you divide J by the secs and you have the watts!