RoCKiTcZa
02-10-2008, 02:07 AM
Job offer on electronics--the making of circuits.
Open to whoever is interested in helping Rockitcza get the grade and continue her studies in science high in the upcoming school year.
No age limits nor required academic qualifications.
Should the offer not be taken by next week, her scholarship may be forfeited (Seriously!).
Salary/Reward: To be decided. :D
Details: OK, so in science high school, we have a subject called "Technology Preparation" (TechPrep), and it really isn't that hard; however, this is the first time we are doing electronics and now we must create a simple LDR circuit. Very simple, isn't it? :)
We have the following components:
1. Battery
2. LED (Light-Emitting Diode)
3. Potentiometer
4. Transistor
5. LDR (Light-Dependent Resistor)
I have made it already with four of these components. Below is a diagram and some pictures of the circuit I have succeeded in building:
http://i254.photobucket.com/albums/hh101/bukopandanflavoredbloodshake/scan.jpg
Pics to come.
As you see we lack an LDR--we can't seem to figure out where to place it and how to put it in. We've tried every single LDR available, but no matter what we do, we can't seem to get the desired effect: when LDR is covered, the LED must shut off and not emit any light. Instead, nothing happens; the circuit remains as it is. The LED does not shut off nor dim when the LDR is covered; only the potentiometer can control the brightness of the light it emits. I've tried installing other components such as switches and buzzers, and they worked properly. What do you suppose is wrong then? I suspect it is the position of the LDR; I myself admit, I have no idea where to place it.
How do I install the LDR on the breadboard to make it work? If you could explain it using my diagram, it would be very much appreciated.
Open to whoever is interested in helping Rockitcza get the grade and continue her studies in science high in the upcoming school year.
No age limits nor required academic qualifications.
Should the offer not be taken by next week, her scholarship may be forfeited (Seriously!).
Salary/Reward: To be decided. :D
Details: OK, so in science high school, we have a subject called "Technology Preparation" (TechPrep), and it really isn't that hard; however, this is the first time we are doing electronics and now we must create a simple LDR circuit. Very simple, isn't it? :)
We have the following components:
1. Battery
2. LED (Light-Emitting Diode)
3. Potentiometer
4. Transistor
5. LDR (Light-Dependent Resistor)
I have made it already with four of these components. Below is a diagram and some pictures of the circuit I have succeeded in building:
http://i254.photobucket.com/albums/hh101/bukopandanflavoredbloodshake/scan.jpg
Pics to come.
As you see we lack an LDR--we can't seem to figure out where to place it and how to put it in. We've tried every single LDR available, but no matter what we do, we can't seem to get the desired effect: when LDR is covered, the LED must shut off and not emit any light. Instead, nothing happens; the circuit remains as it is. The LED does not shut off nor dim when the LDR is covered; only the potentiometer can control the brightness of the light it emits. I've tried installing other components such as switches and buzzers, and they worked properly. What do you suppose is wrong then? I suspect it is the position of the LDR; I myself admit, I have no idea where to place it.
How do I install the LDR on the breadboard to make it work? If you could explain it using my diagram, it would be very much appreciated.