Hi folks ..
I asked a question earlier about smoothing out the current resulting from a resistive load via PWM
Well I didnt get any answers and some additional research on the web suggests that the whole subject of high power switching and SMPSs is somewhat complex which probably explains the lack of any input.
To be honest I doubt I would have been able to understand and implement the nuances of such a supply anyway, so no harm done.
That leads me to ask this ..
Assuming I simply have a low side FET switch in series with a fixed resistor .
Feeding that is the supply under test, in this case an alternator driven with a miniature turbine.
If I measure the voltage pulses across the load resistor can I simply calculate the power being dissipated for each pulse and multiply by the % duty cycle to get average power?
If that is the case, how would I go about getting an analogue value that approximated the average power, preferably without resorting to a uP?
As always any and all comments welcome.
Thanks
Al
I asked a question earlier about smoothing out the current resulting from a resistive load via PWM
Well I didnt get any answers and some additional research on the web suggests that the whole subject of high power switching and SMPSs is somewhat complex which probably explains the lack of any input.
To be honest I doubt I would have been able to understand and implement the nuances of such a supply anyway, so no harm done.
That leads me to ask this ..
Assuming I simply have a low side FET switch in series with a fixed resistor .
Feeding that is the supply under test, in this case an alternator driven with a miniature turbine.
If I measure the voltage pulses across the load resistor can I simply calculate the power being dissipated for each pulse and multiply by the % duty cycle to get average power?
If that is the case, how would I go about getting an analogue value that approximated the average power, preferably without resorting to a uP?
As always any and all comments welcome.
Thanks
Al