Today, no progressing of our project.
We decide to do slideshow on faculty on monday..
Hope it's can settle in a day.. Yosh ^^
Sunday, October 17, 2010
Saturday, October 16, 2010
16 October 2010
Today, we type out all the information of the report.
After checking it, we print it out.
Our report is finally done ^^
After checking it, we print it out.
Our report is finally done ^^
Friday, October 15, 2010
Thursday, October 14, 2010
14 October 2010
Today, we continue do our project.
Firstly, we discuss about the objetive of our project. We are thinking of the main purpose of doing this project and what is the outcome suppose to be?
Then, we discuss about the result we get from experiment and the application of the circuit.
Firstly, we discuss about the objetive of our project. We are thinking of the main purpose of doing this project and what is the outcome suppose to be?
Then, we discuss about the result we get from experiment and the application of the circuit.
Wednesday, October 13, 2010
13 October 2010
Again, we successful modified the circuit with adding a red LED and a 300 ohm resistor which is in series with it..Yosh ^^
After the circuit is switched on, the LED will light up.
By adding this LED, we can know the circuit is running well or not without using multimeter.
Also, by adding the LED, the output voltage and current is decrease, become -5.071V and current become 5.718mA.
After modified the circuit ^^
After the circuit is switched on, the LED will light up.
By adding this LED, we can know the circuit is running well or not without using multimeter.
Also, by adding the LED, the output voltage and current is decrease, become -5.071V and current become 5.718mA.
After modified the circuit ^^
Tuesday, October 12, 2010
12 October 2010
Today, we have constructed the circuit succesfully.Yosh^^
The output voltage is -5.146V while the current is 13mA.(The result was a bit higher than original result since the voltage supplied is less than 9V).
However, our circuit seen like too simple. So, we tried to modify it to by adding some LED to make it become more attracted.
After we switced on the circuit, the LED was lighted up, then it's become dimer and dimer.
A few seconds later, it's was burnt out.
We was confused at first, at the end, WeiChun told us that the maximum voltage across LED is only 2V. Hence, it's mainly due to exceed voltage across the LED.
Actually, we cant put the LED without taking account of the voltage across it.
OIC..
After this, we decide to do a simulation by circuit maker software to know the voltage across LED before we construct it on real circuit.
Hopefully it's work.^^
The output voltage is -5.146V while the current is 13mA.(The result was a bit higher than original result since the voltage supplied is less than 9V).
However, our circuit seen like too simple. So, we tried to modify it to by adding some LED to make it become more attracted.
After we switced on the circuit, the LED was lighted up, then it's become dimer and dimer.
A few seconds later, it's was burnt out.
We was confused at first, at the end, WeiChun told us that the maximum voltage across LED is only 2V. Hence, it's mainly due to exceed voltage across the LED.
Actually, we cant put the LED without taking account of the voltage across it.
OIC..
After this, we decide to do a simulation by circuit maker software to know the voltage across LED before we construct it on real circuit.
Hopefully it's work.^^
 |
| this is our successful circuit |
 |
| this is the waveform from this circuit |
Monday, October 11, 2010
11 October 2010
Today, we start do our report.
And some components as 9V battery and breadboard were bought.
That all.
Thanx..
And some components as 9V battery and breadboard were bought.
That all.
Thanx..
Sunday, October 10, 2010
10 October 2010
today..
not doing anything about project..just make a research to write a report.. thank you..
not doing anything about project..just make a research to write a report.. thank you..
9 October 2010
for today.. no progress about our circuit.. just do preparation for report.. thank you..
Friday, October 8, 2010
8 October 2010
For today....
I go to the lab and want to try build and simulate the circuit, because of my partner have a debate so I do it alone. Although I not easy but I try. I successful construct my circuit and it can generate -5 volt from 9 volt sources. But during my simulation, I replace 9V battery to 9V from sources IDL. But the problem that I face is I cannot get the current from the circuit. I think maybe the component is not in series. I try change it but it don't change anything. Therefore I want to try it next week. Actually, today Endy and his partner want to us to check their circuit. But because of something that can not be avoided, Endy postponed to next week.. That all for today.. thank you..
I go to the lab and want to try build and simulate the circuit, because of my partner have a debate so I do it alone. Although I not easy but I try. I successful construct my circuit and it can generate -5 volt from 9 volt sources. But during my simulation, I replace 9V battery to 9V from sources IDL. But the problem that I face is I cannot get the current from the circuit. I think maybe the component is not in series. I try change it but it don't change anything. Therefore I want to try it next week. Actually, today Endy and his partner want to us to check their circuit. But because of something that can not be avoided, Endy postponed to next week.. That all for today.. thank you..
this is circuit on the breadboard...
Thursday, October 7, 2010
7 October 2010
today..
we try to simulate the circuit that given. but it not working because of some errors. I think this is because of the not of IC's that we used is not correct. so, we need to modified the circuit as soon as possible. but I try to remove the zener diode maybe because of this component it not work properly. but my assumption is wrong because it doesn't change anything. I also try to connect battery 9volt together with multimeter, but the value that I produce is not correct and no data will produce. maybe I do the mistake when want to place it. so tomorrow we try to simulate n modified it again...
we try to simulate the circuit that given. but it not working because of some errors. I think this is because of the not of IC's that we used is not correct. so, we need to modified the circuit as soon as possible. but I try to remove the zener diode maybe because of this component it not work properly. but my assumption is wrong because it doesn't change anything. I also try to connect battery 9volt together with multimeter, but the value that I produce is not correct and no data will produce. maybe I do the mistake when want to place it. so tomorrow we try to simulate n modified it again...
6 October 2010
Hello, today is the day with ASTRONAUT..Then Man Shi was go to the lab to get the component, but we didn't get all the component because forgot the model of the diode and zener diode. So, we can not to simulate our circuit . Therefore the jobs that we do is search the name of the diode and zener diode only. Because of rain, I can't to meet with Man Shi to discuss more about our project. So, there are no improvement about me and my partner for today. We are sorry about that. That all for today.. Thank you..:)
XX111 PLANETARY CONGRESS at DECTAR
5 October 2010
For this day, actually we should get our component. But the lab was close because go to eating ceremony. Then, because of too tired and want to do other work, so we decide to take it tomorrow. Although we didn't take the component, but we serve internet to get some information about our project. We get a little bit about it. So for today, we just get a little bit about what is function of 555 TIMER and also the project.. That all for today. Thank you..:)
4 October 2010
Today, all Jkees student were gathered to get their 1st project. En Jefry was divide student to several group which is 1 group should have 4 person. I'm and my partner get Endy and his partner as a group members. The topic that we get is about GENERATING -5 VOLTS FROM A 9 VOLT BATTERY. Then Pn Norhana was talk about the project, and what we all need to do. That all for today..tq..
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