Author Topic: photocell (Read 1507 times)

ahlburuto · « **on:** February 17, 2008, 01:56:59 PM »

gandang araw po.

meron bang photocell na nabibiling 12vdc? or project man lang na circuit?

best regards...

Philippine Electronics Forum · « **on:** February 17, 2008, 01:56:59 PM »

Shey · « **Reply #1 on:** February 17, 2008, 02:59:27 PM »

you mean LDR ( light dependent resistor ) ?

Philippine Electronics Forum · « **Reply #1 on:** February 17, 2008, 02:59:27 PM »

paranz · « **Reply #2 on:** February 17, 2008, 03:00:21 PM »

or solar cell ba?

Philippine Electronics Forum · « **Reply #2 on:** February 17, 2008, 03:00:21 PM »

ahlburuto · « **Reply #3 on:** February 17, 2008, 03:51:58 PM »

yung merong LDR po....

nilagyan ko kasi ng mge LED na ilaw ang bahay ko eh 12vdc ang supply ko. gusto ko kasi eh every night lang sila mag on. meron na kong board para sa ATS nang 12vdc. kulang ko na lang eh circuit para sa photocell ko. meron akong available na photcell sa bahay eh 220vac. kaya di ko rin magamit yung pagbrownout.

regards

Philippine Electronics Forum · « **Reply #3 on:** February 17, 2008, 03:51:58 PM »

Shey · « **Reply #4 on:** February 17, 2008, 04:25:43 PM »

Pwede mo naman gamitin yung LDR sa 220 Volts basta lagyan mo lang ng voltage divider para bumaba yung voltage sa 12 volts tapos malimitahan mo na rin ang current mo.. Yung mga automatic night lamps na nakikita ko yung ordinary LDR lang ang gamit, may voltage divider lang sila..

Philippine Electronics Forum · « **Reply #4 on:** February 17, 2008, 04:25:43 PM »

ahlburuto · « **Reply #5 on:** February 17, 2008, 05:16:51 PM »

try ko po boss. pero nakabili ka na ba ng omni na night lamp? yung led ang ilaw nya? pwede kaya yun? yun na lang convert ko? para magawa kong 12vdc sya?

best regards

jackvower · « **Reply #6 on:** February 29, 2008, 11:19:46 AM »

Quote from: ahlburuto on February 17, 2008, 05:16:51 PM

try ko po boss. pero nakabili ka na ba ng omni na night lamp? yung led ang ilaw nya? pwede kaya yun? yun na lang convert ko? para magawa kong 12vdc sya?

best regards

Pwede yun check u lng circuit nya then analyze yung source at palitan mo n lng mga resistor nya para 12 vdc n l ng supply mo. compute k n lng apply mo voltage divider at ohms law.

mabalinen · « **Reply #7 on:** April 11, 2009, 11:22:20 AM »

bili ka nalang ng solarstreetlight charge controller. pm mo ako if you nid 1

Mayalin22 · « **Reply #8 on:** April 11, 2009, 03:29:56 PM »

ang isang problema ng LDR circuit is chattering pag ang light level ay mabagal ang transition. kailangan merong hysteresis circuit kagaya ng op-amp o kaya schmitt trigger.

Philippine Electronics Forum · « **Reply #8 on:** April 11, 2009, 03:29:56 PM »

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