Test Circuit

Second test

There is a picture that a circuit been tested. Overall is quite okayh but don't know how to measure the current output by using correct equipment.

First result:



This is when the switch is off but the battery is already connected.


Second result:



This is how the display look like when the switch is on. The LED will probably on when the switch is on.

New circuit found!

New circuit found!

 Just same as the older one but there is no buzzer to indicate the finishing timing. As for this circuit diagram, it is consist of two phase of timer. First is pulse rate timer and the other one is pulse width timer.

Both of these timer have their own characteristic. As for pulse rate timer, it will give pulse according to its frequencies. When P1 is varies, the frequency of the pulse also may varies.

Same goes to pulse width timer but for this timer, it is not about the frequency, it is about pulse duration or pulse width for each pulse cycle. When P2 is varies,  the width of each pulse may become wider than the first one.

Unfunctioning Circuit

Result for the first test!

According to previous entry, I found the circuit for this project. The circuit is consist of buzzer and two LED.

As I connected the battery to the circuit, nothing happen. Both LED is not lighting, and there is no input to the transformer. The value 0.00V.

Then, I continue researching for other circuit diagram.