John N. Power wrote: > This is an amplification of my first response: > > The current in an inductor obeys the equation E = L (di/dt). > The voltage E is the voltage across the inductor, which is > the difference between the input voltage Vin and the output > voltage Vout: E = (Vin - Vout). > > If Vout decreases because of an increase in load current, E > *increases*. This increase causes larger increments of current > to flow into the inductor during the charge phase > ( di = E * dt / L, which increases if E increases). > The inductor integrates these larger pulses, causing the > average current in the inductor to rise until the new standing > current equals the new load current. This increase takes place > *without increasing the duty cycle*. Once the currents reach > equilibrium, the *original* duty cycle continues to maintain > the ratio between Vout and Vin. Nonsense again, John. The same Vin, Vout, duty cycle, inductance, but different output currents? This kinda perpetual motion machine crap should be moved to [OT:] in my opinion. Mike. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu