Switching power supply circuit will ring what will happen
Will not be regulated, the outcome is their own damage or damage to the load.
Switching the power supply circuit to open the ring will make the output voltage instability.
Switching power supply is to use the duty cycle of the adjustment switch to achieve a stable output voltage.
When the load is increased or the input voltage decreases, the output voltage will be reduced accordingly, in the closed loop conditions, the switching power supply will automatically increase the duty cycle of the switch, the output voltage back to the original voltage.
On the contrary, when the load is reduced or the input voltage rises, the output voltage will rise accordingly. Under closed loop conditions, the switching power supply will automatically reduce the duty cycle of the switch and return the output voltage to the original voltage.
If the open loop, the switching power supply duty cycle is constant, then the output voltage will change with the load or input voltage changes, all the role of regulation.
There are two cases of voltage regulator sampling circuit will cause the voltage rise but the design of a good circuit protection is perfect when the switching power supply will immediately protect and stop working there is a switching power supply on the sleek ring design of the voltage requirements are not very There is a strict need for power to have a faster response speed and large output current, such as some of the power amplifier is now open-loop design
