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g7777
Apprentece
Ghana
5 Posts |
 Posted - Jun 11 2007 : 11:47:38 PM
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| hello aaron, my name is george and a student. i am writting a project work on the about subject and need your help. i see your circuit very simply and helpfull in terms of reducing accident.please i need information on the circuit and its operation. even if you can send me a full circuit as it is wired into normall headlight system. THANK YOU. EMAIL-gametefe@yahoo.com |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 16 2007 : 10:15:57 AM
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The circuit is a very simple PNP transistor switched by a phototransistor, with a voltage divider to set the switch point. Not really a whole lot to explain that isn't clear on the schematic.
The wiring instructions to the headlight system are provided in the notes. This will vary based on the car. |
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g7777
Apprentece
Ghana
5 Posts |
Posted - Jun 17 2007 : 4:51:52 PM
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thanks aaron, what is the rate or the value of the phototransistor.
sir.aaron i want you to explan that happens in each device from the point at which the light from the oncoming vehicle falls on the phototrannsistor.
THANKS |
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g7777
Apprentece
Ghana
5 Posts |
Posted - Jun 22 2007 : 10:59:10 AM
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please sir,i am looking forward to hear from you.
thanks. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 23 2007 : 10:57:11 AM
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You can use almost any generic phototransistor.
Do a Google search on "voltage divider" and "how pnp transistor works" and you will quickly see how the circuit functions. |
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g7777
Apprentece
Ghana
5 Posts |
Posted - Jun 24 2007 : 5:47:02 PM
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| thanks sir aaron, i think am getting somewhere now. you are my man. i will give you the progress of the work. |
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g7777
Apprentece
Ghana
5 Posts |
Posted - Oct 03 2007 : 7:18:00 PM
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hi sir aaron,its me george.
i have been able to constract the automatic headlight brightness switch into the normal headlight system of toyota hilux as my project work in school, which i will be defending it on the 08/10/07 thus coming mornday.
all the thanks goes to you for all the information you sent to me.
i have leant a lot from this.
let me say here that i did not find it easy as i did not sleep for about a week trying to make this work and it has. thank you.
i will talk to you on more of the prject works.
thanks. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Oct 07 2007 : 11:09:46 AM
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| Glad it worked out for you! |
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keem
New Member
Philippines
2 Posts |
Posted - Oct 12 2007 : 05:11:56 AM
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hi aaron,
im keem, student from de la salle university. our group chose the topic "automatic headlight brightness switch" to be used as our thesis. i would like to ask for some info about the project. also, i would like to know if there is a sensor used. hping to get a reply from you. thanks... |
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keem
New Member
Philippines
2 Posts |
Posted - Oct 12 2007 : 05:31:47 AM
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| aaron, i would like to ask for the sensor's proximity...if ther's any...tnx...i forgot to give you my e-mail add...keemlesliebriones@yahoo.com |
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about the automatic headlight brightness switch
