103AIW ST DATASHEET PDF

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Do you have any ideia what’s that iron core transformer doing on the top side of the board?

Modifying a notebook power supply

A better view of the optocoupler: Already have an account? The comparator will notice that 2.

SMPS are much 103iw complex, but this is enough to give a good understanding on the theory of operation. For the R42, I’ve put a single 10kOhms resistor.

Now, suppose your 130aiw voltage keeps raising and reach 5. It’s done, now your power supply outputs the desired voltage. The comparator gets the value and compares it to the voltage reference.

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【103AIW ST】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Become a member to follow this project and never miss any updates Become a member. This will be explained in the next post. As you want a specific voltage on 103iw output low voltage sidethe feedback circuit tells the control circuit that the output voltage is below the desired voltage.

You should Sign Up. This project was part of my Soldering Station project. Uploaded everything to hackaday. I managed to get up to I’ll try to show in 103aiww very simplified way how a switch mode power supply works and how to change the feedback circuit so the power supply outputs the voltage you want.

If R2 is 1kOhm, you have:.

AIW Datasheet, PDF – Datasheet Search Engine

The control circuit then closes the switch, allowing current to flow from the high voltage side to the low voltage side. It’s a great guide. There are two clear divisions on this circuit stt, the rubber pads are even marking it, along with silkscreen and areas without components. You are about to report the project ” Modifying a notebook power supply “, please tell us the reason.

When the feedback circuit senses the output voltage is at the desired value, it tells the control circuit to stop charging the capacitor.

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Yes, delete it Cancel. The name “switching” comes 103siw this switch.

【AIW ST】Electronic Components In Stock Suppliers in 【Price】【цена】【Datasheet PDF】USA

When it reached around 23V, the output changed. If R2 is 1kOhm, you have: Using the continuity test, I found the resistors to be R40 and R Let’s have a look at the open PSU: This finishes the explanation of how a SMPS works. The image below is a real SMPS maintaining it’s output voltage.

I wiped my webserver and the images got broken. The Hackaday Prize. Datasheey anyone solved this problem? Consider the output voltage at 19V and calculate the divider, you get around 2.

The feedback circuit notices this and, when the voltage is below the threshold, it tells the control circuit so, which closes the switch again. All good, but the capacitor starts discharging over time, and so the output voltage starts to drop.