Yes, if the battery is disconnected, the full capacitor current (about 150 mA) will run through R3 and R5 and burn it. Other components may be damaged, too. I guess, it's mentioned in the operation instructions (at least it should).I disconnect the battery and 30 LED array and then connect the device to AC, the same thing happened.
The capacitor C2 is needed to perform the ripple filtering.Why C2 is the wrong way around?
I guess T2 is for switching between AC and battery to supply the LED Array, right?
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