Tuesday, September 11, 2012

Change The Position Of Voltage Supply & GND


Salam






Below is the circuit that I construct. But just two LEDs on.




I try to change the place of voltage supply (+5V) with ground (GND). Then all LEDs on. Why this happen?


Friday, September 7, 2012

Jalan-Jalan To Jalan Pasar

Today I went to Jalan Pasar to buy some components. I went to two shops. Nixie and Caltrus.




COMPONENTS

1) IC LM 3915
2) Resistor - 560 Ohms
                    - 470 Ohms
3) Diode 1N4148
4) Capacitor 100uF
5) 1x40 way pin header
6) 1x16 way fence header







Monday, September 3, 2012

Laboratory

Salam...

Today I went to the laboratory to reconstruct my circuit. But the result is same.







Then I try to change using  the LED's trainer. But I don't know why just red LED is on.






I try again and I saw the 1st green LED is on, followed with 2nd green LED and yellow LED. Then there was smoke at the yellow LED. That's mean the LED is burned and same goes to both green LED.






Luckily the LED's trainer did not affect anything. Pheuw~


Wednesday, August 8, 2012

Construct The Circuit

I tried to construct the circuit with breadboard. I used voltage supply (cell) 9V.

Circuit Diagram



This is a circuit that I constructed. I just skip to put the touch pad. I think that I constructed the circuit correctly followed the diagram.

Circuit Constructed


But my circuit cannot run like what I wanted. Just one (1) red  LED is lighten when I switch on the button. The buzzer also had no sound.


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