nigh
Newbie level 6
![Newbie level 6](/styles/images/ranks/blevel3.gif)
Hi guys,
I have a circuit I am trying to understand. In the power input section, it has two protection diodes D1 and D2 (see attached diagram).
Now what i understand is : D1 is for reverse polarity protection. I am not sure what D2 is doing in the circuit. Diodes in this config (D2) are used to protect circuit from negative voltages but i am confused.
Please explain it to me guys.
thanks
![](https://obrazki.elektroda.pl/82_1315578447_thumb.jpg)
I have a circuit I am trying to understand. In the power input section, it has two protection diodes D1 and D2 (see attached diagram).
Now what i understand is : D1 is for reverse polarity protection. I am not sure what D2 is doing in the circuit. Diodes in this config (D2) are used to protect circuit from negative voltages but i am confused.
Please explain it to me guys.
thanks
![](https://obrazki.elektroda.pl/82_1315578447_thumb.jpg)