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.^^
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| this is our successful circuit |
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| this is the waveform from this circuit |
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