Light a 12v LED Bulb with 3.7v Mobile Phone Battery (Boost Converter
\$\begingroup\$ The battery has 4.2 Volts when fully charged. I need the threshold to be 3.3 Volts and so I would use a 3.3 volt zener diode. Since the negative input should also get the 3.3 volt, I would use R2 and R3 such that R3/R2=33/9.
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It is widely used in Car lights, Working lights, Emergency lights, Decorative lights, Indoor DIY COB LED lights. Package include:-This is the pack of 100 pieces of 3v-3.7v Round Cob cool white led light . Specifications:-Energy-Saving and Environmentally Friendly, High Brightness. It is a pack of 100 cob; Voltage: DC 3V-3.7v; Max Input Voltage:- 4v
Output DC 3.7V 700mA Input 3.24.2V LED Driver for Cree P4 Q5 3w LED
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3W 3.7V 1000mA 300LM LED COB light module for bike DIY Work lamp buy in
Hello everybody. I'm complete newbie to electronics, yet I would like to build simple and effective bicycle light. The components are: 1. 1 x 3.7V, 350mAh, 25C LiPo battery 2. 3 x 3.4V, Ultra-bright, 5mm, 18000mcd, 20mA LEDs 3. 1x 22 Ohms resistor 4. 1 x latching switch My questions are: 1.
Portable Emergency 10w LED light (3.7v to12v) using DC step up boost
Barrina LED Shop Light 2FT, 20W 2500LM 6500K, Clear Cover Linkable LED Tube Lights, V Shape Integrated T8 LED Lighting, LED Ceiling Lights for Garage, Warehouse, Workshop, ETL Listed,2 Pack. 4.7 out of 5 stars 3,080. 200+ bought in past month. $45.99 $ 45. 99 ($23.00 $23.00 /Count)
DC3 3.7V 2V COB LED Bulb 60x8mm 1.5W 3W Light source Warm Cold White
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5pcs/lot LED COB Chip Light 9W 7W 5W 3W 220V 230V Input Smart IC Cold
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This spot light features an integrated color changing LED that allows you to choose from 3 different light temperature options - 2700K (warm white), 3000K (soft white) or 4000K (bright white). Installation is simple with the included quick-connect wire clip that easily snaps onto the supply wire of your 12-Volt landscape lighting transformer.
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