caramoan tour package

caramoan tour package

« previous next »
Pages: [1]   Go Down

Author Topic: automatic emergency light (white led 12 pcs.)  (Read 1338 times)

Offline SexyPaint

  • Lead Acid Battery
  • *******
  • Posts: 625
  • Pogi/Ganda Points: 25
automatic emergency light (white led 12 pcs.)
« on: June 04, 2010, 04:25:05 PM »
hello po! ngayung panahon ng tag-ulan, siyempre di maiwasang mag brownout, heto po ang isang mgandang design, na try ko na po siya....sa baba yung link... enjoy...

http://www.extremecircuits.net/2010/01/automatic-low-power-emergancy-light.html

yun pung bc548 pede 2n2222

yung binili ko lang dito is yung 2n2222 (35 pesos) bd140 (75 pesos) lahat junk na...
Logged

Philippine Electronics Forum

automatic emergency light (white led 12 pcs.)
« on: June 04, 2010, 04:25:05 PM »

Offline webscatter

  • Size C Battery
  • *****
  • Posts: 210
  • Pogi/Ganda Points: 14
    • Webscatter Online World-WOW
Re: automatic emergency light (white led 12 pcs.)
« Reply #1 on: June 04, 2010, 04:57:42 PM »
Malaki ang draw ng current nito basi sa schema ....

current x N       , N= No. of parallel branch....

I will not recommend for u....
Logged

Philippine Electronics Forum

Re: automatic emergency light (white led 12 pcs.)
« Reply #1 on: June 04, 2010, 04:57:42 PM »

Offline MX45

  • Gas Turbine
  • **
  • Posts: 2499
  • Pogi/Ganda Points: 231
  • Gender: Male
Re: automatic emergency light (white led 12 pcs.)
« Reply #2 on: June 04, 2010, 05:25:54 PM »
tsaka medyo mura lang yata kung bibili na lang ng yari na. pero kung sa mga nais mag project okay na din.
Logged
Gawin mo ang nais mo, sundin mo ang gusto mo dahil ikaw o ang sarili mo ang hari ng yung kagustuhan...

Philippine Electronics Forum

Re: automatic emergency light (white led 12 pcs.)
« Reply #2 on: June 04, 2010, 05:25:54 PM »

Offline SexyPaint

  • Lead Acid Battery
  • *******
  • Posts: 625
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #3 on: June 04, 2010, 05:28:41 PM »
Quote from: webscatter on June 04, 2010, 04:57:42 PM
Malaki ang draw ng current nito basi sa schema ....

current x N       , N= No. of parallel branch....

I will not recommend for u....

ganun po ba, sir mga ilang oras kaya aabutin ng battery? kagagawa ko lang kc to kanina di ko pa na test ng maigi... thanks.. po
Logged

Philippine Electronics Forum

Re: automatic emergency light (white led 12 pcs.)
« Reply #3 on: June 04, 2010, 05:28:41 PM »

Offline SexyPaint

  • Lead Acid Battery
  • *******
  • Posts: 625
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #4 on: June 04, 2010, 05:34:30 PM »
Quote from: ccasiser on June 04, 2010, 05:25:54 PM
tsaka medyo mura lang yata kung bibili na lang ng yari na. pero kung sa mga nais mag project okay na din.

sir bale sakin po is mga junk lang yung iba, binilhan ko lang ng dalawang piyesa para magamit, at saka gusto ko ring matutunan kung paano siya mag work, dagdag kaalaman para sa akin... ;D
Logged

Philippine Electronics Forum

Re: automatic emergency light (white led 12 pcs.)
« Reply #4 on: June 04, 2010, 05:34:30 PM »

Offline webscatter

  • Size C Battery
  • *****
  • Posts: 210
  • Pogi/Ganda Points: 14
    • Webscatter Online World-WOW
Re: automatic emergency light (white led 12 pcs.)
« Reply #5 on: June 04, 2010, 05:37:03 PM »
Quote from: Papaden on June 04, 2010, 05:28:41 PM
ganun po ba, sir mga ilang oras kaya aabutin ng battery? kagagawa ko lang kc to kanina di ko pa na test ng maigi... thanks.. po

depende sa AMPhr ng bateria mo...  kung ang battery mo ay 4.5AMPhr

Ang min.current consumption mo is roughly 30mA....

ROUGH lng ito...

It=30mA x 12 = 360 mA  or .36A  di pa kasali lhat ng current consumptions ng iba....

.36A x Batt Life = 4.5A-Hr

Batt life = Approx. 12 Hrs.. Continuous

Logged

Offline RaffT

  • Technical People
  • Hydroelectric
  • *****
  • Posts: 3440
  • Pogi/Ganda Points: 103
  • Gender: Male
  • more on R-n-D
    • MY Bots
Re: automatic emergency light (white led 12 pcs.)
« Reply #6 on: June 04, 2010, 05:47:03 PM »
ALL I CAN SAY: ok na rin yan as a solid state emergency lamp..

iba nga jan is using 6v or 12V DC bulb (w/c is slower to light) and is more power hungry than LEDs... :)

depende na yan how you set the R1-R12 values...
Logged
Learning is CooL! BEAM robotics/DIY UCD180/PSP/AC wtmtr/digiESRmtr/PICkit™2 clone/SGTC/SSTC/DR-SSTC

Never argue with an idiot... They'll take you down to their level and beat you with experience

Offline SexyPaint

  • Lead Acid Battery
  • *******
  • Posts: 625
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #7 on: June 04, 2010, 05:53:05 PM »
Quote from: webscatter on June 04, 2010, 05:37:03 PM
depende sa AMPhr ng bateria mo...  kung ang battery mo ay 4.5AMPhr

Ang min.current consumption mo is roughly 30mA....

ROUGH lng ito...

It=30mA x 12 = 360 mA  or .36A  di pa kasali lhat ng current consumptions ng iba....

.36A x Batt Life = 4.5A-Hr

Batt life = Approx. 12 Hrs.. Continuous



thank you sir, kahit mga 5 hours ok lang, kc pang ilaw lang sa bahay kung walang kuryente lalo na pag may bagyo, hindi ko naman po gagamitin ng 24 hours e.. ;D ;D



Logged

Offline SexyPaint

  • Lead Acid Battery
  • *******
  • Posts: 625
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #8 on: June 04, 2010, 05:54:18 PM »
Quote from: BrAiNs on June 04, 2010, 05:47:03 PM
ALL I CAN SAY: ok na rin yan as a solid state emergency lamp..

iba nga jan is using 6v or 12V DC bulb (w/c is slower to light) and is more power hungry than LEDs... :)

depende na yan how you set the R1-R12 values...

thanks sir brains..
Logged

Offline kinyo

  • Size D Battery
  • ******
  • Posts: 349
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #9 on: July 19, 2010, 02:46:40 AM »
balak ko i-convert sa led yung mga emergency lights namin na gumagamit ng mini-fluorescent bulbs kasi malakas sa baterya ... kaya bumili muna ako ng murang led e-light sa sm para magkaroon ng idea sa circuit ... P495 lang, 44 led's na



ito yung control board


wala syang transformer, it uses a 2.2uF/250VAC capacitor with 220k resistor in parallel to drop the voltage ... i believe the single big blue resistor is used as the current limiter (didn't get the value argh!) for the whole led array, which could explain why the current from the battery is 200mA during 44-led operation and 150mA (not 100!) during 22-led operation

paalala lang ... huwag kalikutin ito na nakasaksak sa AC .... LIVE ang circuit eh!  ;D

palagay ko pwede makagawa ng mas simpleng circuit kapag gumamit ng relay kesa transistor switching ... pero kung gagayahin itong 44-led, baka mas magastos sa presyo ng led pa lang  ;D  ... magkano nga ba presyo ng ganitong led sa raon?

Logged

Offline jamz

  • Size AA Battery
  • ****
  • Posts: 124
  • Pogi/Ganda Points: 2
Re: automatic emergency light (white led 12 pcs.)
« Reply #10 on: July 19, 2010, 03:09:23 PM »
pwede bang ibabad na naka-charge iyan? me trickle charge function ba? at saang tindahan mo sa sm nabili yan, sa ace hardware ba?  thanks!

bibili ako niya kung pwedeng ibabad na naka-charge lang.
Logged

Offline kinyo

  • Size D Battery
  • ******
  • Posts: 349
  • Pogi/Ganda Points: 25
Re: automatic emergency light (white led 12 pcs.)
« Reply #11 on: July 20, 2010, 03:00:20 AM »
hindi ko sinukat charging current kasi nga live yung circuit ... pero makikita sa control board na mababa lang charging current dahil capacitor ang input

designed talaga sya as emergency light na nakababad sa AC ... kapag blackout, sisindi yung mga led's at mamamatay uli pagbalik ng kuryente at sisindi yung red "charging" led

nabili ko sa sm rosales (pangasinan), Ace Express ang tawag nila sa hardware section sa sm dept store (2nd flr)

 ;D
Logged

Offline enriz622

  • Hydroelectric
  • ***
  • Posts: 3550
  • Pogi/Ganda Points: 289
  • Gender: Male
Re: automatic emergency light (white led 12 pcs.)
« Reply #12 on: July 21, 2010, 10:16:58 AM »
palagay ko madali masira dyan baterya :)
Logged

Offline travian19

  • Size AA Battery
  • ****
  • Posts: 127
  • Pogi/Ganda Points: 8
  • Gender: Male
  • due to the resistance of....
Re: automatic emergency light (white led 12 pcs.)
« Reply #13 on: July 21, 2010, 10:33:36 AM »
yung nabibili sa mga bangketa na emergengy flashlight led, ok din naman ah!! hehe..
Logged
ctrl+alt+del "restart your brain!"

Offline jamz

  • Size AA Battery
  • ****
  • Posts: 124
  • Pogi/Ganda Points: 2
Re: automatic emergency light (white led 12 pcs.)
« Reply #14 on: July 21, 2010, 01:15:58 PM »
Quote from: travian19 on July 21, 2010, 10:33:36 AM
yung nabibili sa mga bangketa na emergengy flashlight led, ok din naman ah!! hehe..

konti lang ang led ng mga yun. eto marami, pag nasira, meron ka pa ring makakahoy na led.  yung led kasi bawat isa ay 20pesos. 
pwede siguro ma-modify ang circuit niyan to accept 12v7ah battery para mas matagal ang liwanag
Logged

Offline travian19

  • Size AA Battery
  • ****
  • Posts: 127
  • Pogi/Ganda Points: 8
  • Gender: Male
  • due to the resistance of....
Re: automatic emergency light (white led 12 pcs.)
« Reply #15 on: July 21, 2010, 03:39:44 PM »
siguro nga po! para mas matipid!
Logged
ctrl+alt+del "restart your brain!"

Philippine Electronics Forum

Re: automatic emergency light (white led 12 pcs.)
« Reply #15 on: July 21, 2010, 03:39:44 PM »
Pages: [1]   Go Up
« previous next »
 

Privacy Policy

Contact Us: elabph@yahoo.com