is it enable reduce 12v to 1.5v?

[khguan]

ok wan.. it will be very bright... but i think de lifespan will be shorter lor...

n it will slowly get dimmer over time with de same amount of voltage supplied to de LED..

B)

 

[n305er]

I connect directly to 12 Volts... 5 LED in series...

 

[xtorm]

bright or notlahhh?

 

[cmos]

I agree with votech. Go with IC voltage regulators. The LM78* series should suffice and comes in a wide range of voltage outputs.

IC Voltage Regulator

You can google out the schematics for these but it'll probably involve less components than you can count on 1 hand.

Enjoy ;)

 

[kruger]

Originally posted by cmos@Mar 28 2005, 10:34
I agree with votech. Go with IC voltage regulators. The LM78* series should suffice and comes in a wide range of voltage outputs.

IC Voltage Regulator

You can google out the schematics for these but it'll probably involve less components than you can count on 1 hand.

Enjoy ;)

[snapback]846204[/snapback]​

if i post my schematic of that psu unit, can you guys give comments and maybe fix it... :)

 

[kruger]

well... here is the schematic... any comments or upgrade or anything? :rolleyes:

 

[khguan]

dats a very common circuit used in DC power supplies...

always c this circuit back to de time when i was an electronic hobbyist..

for normal n low ampere use... no need to upgrade anything lar..

 

[votech]

The Regulator in the schematic only allow u to drive 12V load up to 1A of current. if you need more...gotta use another series or another way is to connect in parallel... ;)

 

[khguan]

yep.. dats rite... u may need a heatsink for it if u r using constant load