請問 LED 總用電量有冇得計..

1^#

ve7mma2 發表於 2010-1-15 15:17:16 | 顯示全部樓層

Put an ammeter in series either on the +ve or -ve side of the battery, which will show you the current drain of the whole circuit.

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請問 LED 總用電量 有冇得計..