Soft start regulator 220VAC
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Soft start regulator of AC voltages
This regulator uses for the prolongation of durations of usual bulbs. Gradually turning on power supplies decrease current strike. Normal bulb has 10 way smaller resistances when is cold. When gradually has increased voltage on the bulb then maximal amount of peak value current 5 way smaller . Aside from this, the final achieved voltage is deliberately 15 % smaller from entry voltage in order to reduces spending bulbs. Knows that power loads goes that square of voltage. Decrease of voltage for 15 % decrease power 27,8 %.
Triak necessary must has been chosen that endures at least 15 way larger current from along calculations necessary. For 160W lamp use at least 12A triac. So will be sure that during the burning of bulb not fail triac.
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