SOLAR projects - E-gizmo's 5V/1W panels

[RaffT]

guys,

post ko lang bago kong bili na solar panels from e-gizmo.. stated sa site as 5V 1W(200mA)



eto readings ko done ngayun .. 12:30pm, no clouds, full sunlight

 Voltage : about 5.8Vdc (close to 6V na) GOOD!
 Short Circuit Current : about 125mA lang? NOT GOOD!

 should be 200mA (as stated sa site)

I was hoping for a 1A current.. mukhang till 125mA * 5 pcs. = 625mA max lang.. far from 1A..

hmmm anu kaya magandang project para dito? AA battery charger nalang or Li-Ion charger with a max of 625mA.. sayang bitin ako sa current output...  :'(

 

[Macgyver]

solar lamp.  LEDs tapos bili ka nung nimh na pang cordless phone.  Konting resistors for the LED,  blocking diode para di magdischarge back from battery to solar, saka switch.   Iwan mo lang sa tabi ng bintana ayos na.  Pwedeng night light sa gabi o kaya  ilaw pag brownout.

[Ikasamoko]

magkano score mo dyan sis??

matanung ko lang...di ba convert nyan ang sunlight to electricity? panu if supply natin yan ng electricity? mag produce din kaya ng sunlight??

[sgboy]

matanung ko lang...di ba convert nyan ang sunlight to electricity? panu if supply natin yan ng electricity? mag produce din kaya ng sunlight??

haha.

[Macgyver]

magkano score mo dyan sis??

matanung ko lang...di ba convert nyan ang sunlight to electricity? panu if supply natin yan ng electricity? mag produce din kaya ng sunlight??

actually pwede,  try mo kabit sa 220v outlet yang solar module na yan. You will see sparks and light    hahaha

[RaffT]

hahahah mga impakta kayo

I was thinking maybe charge a NiMh (or Li-ion battery) .... sympre may MAXIM charge controller tayong hi-tech(anu ginagawa ng FS hehe...) tapos boost converter (or simply a 'regulated' joule thief) with strings of LEDs as load... yun palang nasa isip ko

[Ikasamoko]

swap tayo ng vibrator...

magkanu kuha mo sis??

[maldihtah13]

3 binili ko. 1st test ko kinabitan ko ng LED sa likod.

Not much power pero pwede na rin.

[RaffT]

swap tayo ng vibrator...

magkanu kuha mo sis??

P165/pc

[m@r]

P165/pc

Php 165. ok na rin...

[Ikasamoko]

pwede na...

[BANNEDMemberAccount]

tataas ata ampere kapag parallel

[m@r]

tataas ata ampere kapag parallel

tama ka sis... voltage is the same but the current rating will increase...

[clare]

nabitin ako sa 200ma na rating! hehehe 125ma lng pala... sayang din ung 75ma na nawawala hehehe
gagwa sana ako ng charger gamit un kailangan ko pala ng atleast 2pcs para ndi ako mabulok kakahintay magcharge ng battery hehe ung mga friends ko gumawa ng panregalo nila gamit solar panels with rechargeable battery and ldr at nilagay sa jar na maganda at pinangregalo sa gf's nila nung balentayms! inggit ako hahaha  nasa bintana lng ung jar lagi na lumiliwanag kapag dumilim na ang cute nakakaimpakta hahaha

[RaffT]

pwede rin ito pang charge ng 5V devices (lagay nalang ng 1N4001 w/c has 0.6V drop)...

dapat lang malakas tlga current output

[Macgyver]

merong diode ata na mas mababa pa voltage drop.  I think mas ok gamitin.

"Schottky diode voltage drop is between approximately 0.15–0.45 volts  - Wikipedia"

[Ikasamoko]

if parallel yung diode? mas bababa pa ba yung Vf nya??

[RaffT]

plan ko gumamit ng  0.6V drop DIODE para bumaba ang output ng solar panel.. I was thinking kasi of a buck converter, pero madami na parts nun.. mas simpler ang murahing diode, MURA pa

yes schottky diodes have low volt drop, some malapit 0.1V

@kasamiko,
yung solar panels are usually wired in parallel(or series if voltage ang gusto pataasin).. then a single diode to isolate the battery kung mababa na terminal voltage vs battery charged

[Ikasamoko]

no..what I mean is...1N4001 with typical drop na 0.6v...if parallel ko sila na dalawa mag divide ba yung drop ko? maging 0.3V na lang? something like that...

[RaffT]

no..what I mean is...1N4001 with typical drop na 0.6v...if parallel ko sila na dalawa mag divide ba yung drop ko? maging 0.3V na lang? something like that...

hmmm di ko yata sure sis.. ask natin mga masters dito..