সহজ LED WORK LAMP 18 LED ========================= - TopicsExpress



          

সহজ LED WORK LAMP 18 LED ========================= আগৰ LED DESK LAMPত বহুতে কাম কাজ কৰিবও পাৰে সৰু ৰুমত পিছে ডাঙৰ ৰুমত ভাল পোহৰ হোৱা লাইত লাগিছিল , ইয়াত দিলোঁ 1) make 12V to 18v doubler with IC 555 circuit here powersupply88/12v-dc-voltage-doubler-circuit.html 2) make LED rows each row 6 led in series make 3 parallel rows . 3) simple charger :eleccircuit/automatic-off-12v-battery-charger-by-power-scr/ charge time : 8hours Can be used as CFL /tube replacer with adapter see in comments Battery used 12V SLA battery 800-900Rs LEDs: SMD5050 BACKUP : 7hour or more
Posted on: Thu, 09 Oct 2014 13:09:29 +0000

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