Emergency LED Lights. Powerful & Cheep Circuit LED-716 Emergency Light Schematic Diagram
LED-716 is one of the most powerful and very cheep circuit. You can try to make one at home.
Click image to enlarge.
DATA for Emergency LED Lights:
D1 to D5 = IN4007
Q1 = C945 NPN
Q2 = D965 NPN
C1 = CL-155J, 250 V.
C2 = 100μF, 16 V.
C3 = 1μF, 50 V.
R1 = 1Ω
R2 = 3Ω
R4 = 5.1Ω
R3 and R5 = 1kΩ
R6 = 390kΩ.
Battery = 1300-1600mAh.
LED = 30 Num, color = White.
INPUT to Emergency LED Lights:
Cable = 3A,250V.
OUTPUT of the Emergency LED Lights:
(This is what the above LED Lights Lamp using)
Current = 0.1 A.
Power = 1 Watt.
3-Option switch or Pattern change
Option 2 = OFF
Option 3 = Normal Light
Backup Time of the Emergency Light lamp.
At Option 2 ( Normal Light) 10 Hrs
Here is the full story that how did i make this post and share with you guys.
Actually, someone bring me a DP-716 Emergency LED Light lamp. So I took the lamp (for checking/repairing). Here you can see the whole story in images.
Here, we have opened it for repairing. ( You can also try on such your home appliances, but keep in mind that safety is more important….)
Here you can see that what i did in this circuit. because the resistor on the back side ( which i have soldered) was blown out. so the root of problem was that specific resistor.we have done the job. Now the pattern change switch is on Option 1 i.e. on Full light. the back up time will be 4-6 hours.And in this case, the pattern change switch is on Option 3 i.e on Full light. the back up time will be 8-10 hours. also note that , option 2 is for turning off the Bulb light.
Cheap PCB Prototype: 10 pcs 2 layers only $10, quick delivery, 100% E-test.