# How does the voltage remain constant at secondary side of flyback SMPS when secondary current is decreasing linearly with time?

Continous Mode of Flyback SMPS

$$V = L\dfrac{di}{dt}$$
When the fly-back transformer's primary is being "charged" with energy, a DC voltage is switched in parallel and this gives rise to a ramping current. In the 2nd half of the process, the energy is released and the current ramps back towards zero and, the rate of change of this current ($$\\dfrac{di}{dt}\$$) IS the output voltage produced divided by the turns ratio: -