Author Topic: using IR at phototransistor (Read 1235 times)

LallapaloOza · « **on:** February 19, 2010, 10:19:05 PM »

Mga bossing my sensor po kau na using infrared at phototransistor
Na ang supply ay 9v or 12v??

P share nman po ng diagram..

Kac ggawa kmi ng hand dryer using infrared at phototransistor..
Function nya:
Mag o on yung dryer if nka lgay ung kmay mo sa airlet outlet ng hand dyer at
mag o off kung wala n ung kmay xa air outlet..

Philippine Electronics Forum · « **on:** February 19, 2010, 10:19:05 PM »

maldihtah13 · « **Reply #1 on:** February 19, 2010, 10:36:41 PM »

almost the same ng mga line follwing circuit

try this link
http://home.cogeco.ca/~rpaisley4/PhotoDetectors.html

Philippine Electronics Forum · « **Reply #1 on:** February 19, 2010, 10:36:41 PM »

LallapaloOza · « **Reply #2 on:** February 20, 2010, 08:26:46 AM »

tnx po..

Philippine Electronics Forum · « **Reply #2 on:** February 20, 2010, 08:26:46 AM »

LallapaloOza · « **Reply #3 on:** February 22, 2010, 04:16:52 PM »

my iba p po kaung ckt.
using IR at photo...

Philippine Electronics Forum · « **Reply #3 on:** February 22, 2010, 04:16:52 PM »

akhen · « **Reply #4 on:** February 22, 2010, 04:19:39 PM »

bakit sis ano problem dun sa link? di ba applicable sa project mo?

Philippine Electronics Forum · « **Reply #4 on:** February 22, 2010, 04:19:39 PM »

akhen · « **Reply #5 on:** February 22, 2010, 04:33:02 PM »

try this...

Oj0vO · « **Reply #6 on:** February 14, 2011, 12:58:51 AM »

Quote from: akhen on February 22, 2010, 04:33:02 PM

try this...

para san po itong 4011 sir?..

motion55 · « **Reply #7 on:** February 14, 2011, 05:42:57 AM »

Kung hand sensor lang, gamitan mo na lang ng IR receiver pang remote control. Tapos sa IR emitter side, gamitan mo ng 38KHz oscillator. Di kailangan ng high power ang IR emitter diode kasi super sensitive ang mga IR remote control receivers.

RaffT · « **Reply #8 on:** February 14, 2011, 06:59:13 AM »

^agreed

tapos yung IR emitter, use a series limiting resistor nalang w/c would also serve as "range" adjustment for the IR reciever...

Oj0vO · « **Reply #9 on:** February 14, 2011, 09:02:44 AM »

Quote from: RaffT on February 14, 2011, 06:59:13 AM

^agreed

tapos yung IR emitter, use a series limiting resistor nalang w/c would also serve as "range" adjustment for the IR reciever...

sir alam niyo po paano tataas ang range ng IR gaya ng remote?,., hindi kasi gumagana ung nkita ko na mga circuit sa net, .. laser sana gagamitin ko kaso ndi ko pa na calculate ang supply niya kasi transformer gagamitin ko ndi battery..

motion55 · « **Reply #10 on:** February 14, 2011, 10:06:02 AM »

Quote from: j0v3n on February 14, 2011, 09:02:44 AM

sir alam niyo po paano tataas ang range ng IR gaya ng remote?,., hindi kasi gumagana ung nkita ko na mga circuit sa net, .. laser sana gagamitin ko kaso ndi ko pa na calculate ang supply niya kasi transformer gagamitin ko ndi battery..

I tell you gagana yan. Nakagawa na ako ng sensor ng tao sa harap ng automatic urinal flusher. Very sensitive ang mga remote control receivers. Kaya mag-detect ang tao 1-meter away from the sensor. If ever may problem, it might be too sensitive. Baka kailangan bawasan ang current ng IR emitter hanggang tama lang ang distance. Take note you have to apply a pulsed IR light. The frequency is usually 38KHz. Baka DC source sa IR diode ang ginamit mo kaya di gumana ang ginawa mo.

Oj0vO · « **Reply #11 on:** February 14, 2011, 11:19:20 AM »

Quote from: motion55 on February 14, 2011, 10:06:02 AM

I tell you gagana yan. Nakagawa na ako ng sensor ng tao sa harap ng automatic urinal flusher. Very sensitive ang mga remote control receivers. Kaya mag-detect ang tao 1-meter away from the sensor. If ever may problem, it might be too sensitive. Baka kailangan bawasan ang current ng IR emitter hanggang tama lang ang distance. Take note you have to apply a pulsed IR light. The frequency is usually 38KHz. Baka DC source sa IR diode ang ginamit mo kaya di gumana ang ginawa mo.

ok sir i'll try, salamat po

Philippine Electronics Forum · « **Reply #11 on:** February 14, 2011, 11:19:20 AM »

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