flickering LED lights

**miked** · November 5th, 2012 07:31 PM

i'm on my second piece of 10mm LED wedge base used as clearance/park lights on the front. replaced the 12volts 5 watts halogen with a 10mm 6 led wedge equipped with 2 resistors in parallel with each other. about 300 ohms as per the color code.

problem: LED was flickering at first. then 3 (out of 6 per piece) leds were out until all are dead.

installed another one thinking it could be the LED but problem is occuring again. replaced the previous halogen bulb and it does not flicker.

**babynos01** · November 5th, 2012 07:41 PM

Originally Posted by miked

i'm on my second piece of 10mm LED wedge base used as clearance/park lights on the front. replaced the 12volts 5 watts halogen with a 10mm 6 led wedge equipped with 2 resistors in parallel with each other. about 300 ohms as per the color code.

problem: LED was flickering at first. then 3 (out of 6 per piece) leds were out until all are dead.

installed another one thinking it could be the LED but problem is occuring again. replaced the previous halogen bulb and it does not flicker.

2 300 ohm resistors in parallel is equal to 150 ohms.
Mostly sir, the problem why it flickers is there is too much current passing thru the LED. Sa sobrang taas ng current, nasusunog na yung nasa loob.

**stickers** · November 5th, 2012 07:42 PM

Originally Posted by miked

i'm on my second piece of 10mm LED wedge base used as clearance/park lights on the front. replaced the 12volts 5 watts halogen with a 10mm 6 led wedge equipped with 2 resistors in parallel with each other. about 300 ohms as per the color code.

problem: LED was flickering at first. then 3 (out of 6 per piece) leds were out until all are dead.

installed another one thinking it could be the LED but problem is occuring again. replaced the previous halogen bulb and it does not flicker.

T10 LEDs po ba gamit mo?

**Phoenix67** · November 6th, 2012 08:34 AM

Try adding a voltage regulator IC (ex, 7805 - 7805 datasheet(1/1 Pages) ETC | THREE-TERMINAL POSITIVE VOLTAGE REGULATOR IC) instead of resistor. Putting the IC on an aluminum heatsink will also help in prolonging the life of the IC.

**miked** · November 8th, 2012 11:25 AM

Originally Posted by stickers

T10 LEDs po ba gamit mo?

yap............. T10

**miked** · November 8th, 2012 11:26 AM

Originally Posted by Phoenix67

Try adding a voltage regulator IC (ex, 7805 - 7805 datasheet(1/1 Pages) ETC | THREE-TERMINAL POSITIVE VOLTAGE REGULATOR IC) instead of resistor. Putting the IC on an aluminum heatsink will also help in prolonging the life of the IC.

terminal 1 is from the 12volts positive
terminal 2 is to ground return
terminal 3 is to LED positive terminal

am i correct?

**stickers** · November 8th, 2012 06:23 PM

Originally Posted by miked

yap............. T10

Yung nakuha ko plug and play lang.. T10 28 LED

Baka nga medyo mataas yung current mo... Pumutok na po ba yung 1st batch ng LED mo? Or baka maluwag lang yung connectors, nung unang kabit ko kasi nagfiflicker din, inusli ko maigi yung wires naging ok na.

**dr. d** · November 8th, 2012 09:32 PM

advertise nila, 100,000 hours daw.. yet here they are.. dying one by one,..
i bought one for my dome light.. napupundi isa-isa...

errr.. how do you connect the thingee (voltage regulator), and how much does it cost?

**babynos01** · November 8th, 2012 09:38 PM

Originally Posted by dr. d

advertise nila, 100,000 hours daw.. yet here they are.. dying one by one,..
i bought one for my dome light.. napupundi isa-isa...

errr.. how do you connect the thingee (voltage regulator), and how much does it cost?

Its super cheap sir. Pero 7805 is not enough to power your dome light. 5V regulated lang kasi output nun e. Your dome light requires 12V. Kapag masyado mababa naman yung voltage, mahina output and nag-fliflicker din kapag sobrang baba.

Look for 7810 (10V regulated) if possible. LED kasi require constant voltage and current. Kaunting high fluctuation lang sa voltage, mabilis mag degrade quality niya.

**dr. d** · November 8th, 2012 09:45 PM

Originally Posted by babynos01

Its super cheap sir. Pero 7805 is not enough to power your dome light. 5V regulated lang kasi output nun e. Your dome light requires 12V. Kapag masyado mababa naman yung voltage, mahina output and nag-fliflicker din kapag sobrang baba.

Look for 7810 (10V regulated) if possible. LED kasi require constant voltage and current. Kaunting high fluctuation lang sa voltage, mabilis mag degrade quality niya.

ah! thanks.
san ba yan makukuha? meron ba sa auto supply? o dapat sa raon o alexan..?