Offer Components of AIW(ST, SOP8) from supplier, Request a quote for the part number# AIW. Same day shipping on in-stock parts. Product Detail: Offer AIW, AP-2, AP2A from Hong Kong 【AIW ST】Electronic Components In Stock Suppliers in 【Price】【Datasheet PDF】. AIW offered from Heisener shipps same day. AIW, Hot Offers STMicroelectronics – AIW. Datasheet, AIW Datasheet. In Stock, 1, Quota Limit.
| Author: | Negis Voodoogal |
| Country: | Bahamas |
| Language: | English (Spanish) |
| Genre: | Software |
| Published (Last): | 25 July 2005 |
| Pages: | 32 |
| PDF File Size: | 7.30 Mb |
| ePub File Size: | 20.38 Mb |
| ISBN: | 885-8-64254-531-2 |
| Downloads: | 59153 |
| Price: | Free* [*Free Regsitration Required] |
| Uploader: | Arashilabar |
Become a member to follow this project and never miss any updates Become a member. There was one problem, though: Having the datasheet of the comparator in hands always helps.
TSMWAIDT=AIW – ST – IC Chips – Kynix Semiconductor
I’ve then put two 10kOhms resistors and one 1. Hello, i have the same problem as users above: Now, with a basic understanding of how a SMPS works, there should be no problem modifying one to output our desired voltage. The comparator gets the value and compares it to the voltage reference.
Let’s first understand how a switching power supply works. Without load, voltage is stable??? Dt need to make 5V looks like 2.
Modifying a notebook power supply Modification of a notebook power supply to output a desired voltage. These steps keep repeating, maintaining the output voltage at the desired value. There’s no real secret to that. The feedback circuit notices this and, when the voltage is below the threshold, it tells the control circuit so, which closes the switch again. But when I connect even very small load, it shuts off.
Your Password Forgot your password? The images below are purely educational.
【103AIW ST】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA
Did’nt bother much more due to the PCB being covered in thermal glue hiding the circuit. Over voltage protection could be a problem with this, but I have not figured out how to bypass it yet. Here, take a look at the same image with the subdivisions: Your Email Remember me. Let’s have a look at the open PSU: This finishes the explanation of how a SMPS works.
【AIW ST】Electronic Components In Stock Suppliers in 【Price】【цена】【Datasheet PDF】USA
It will deliver up to ma of current with current limiting. This will be explained in the next post. When you turn on the power supply, the switch is open and the capacitor is discharged, at 0V. The oscillating start only with load. The voltage divider I wanted sy connected to pin 2 of the comparator IC. Nice, but how do we identify the voltage divider?
The voltage divider divides the output voltage by a known constant and feed it to a comparator. If we compare this voltage divider to the one at the previous post, R40 103ais R1 and R41 is R2.
Do you have any ideia what’s that iron core transformer doing on the top side of the board? The original values were 15kOhms for R40 and 2. Nice, but what is what on this power supply? I think is DAP8A some protection. Similar projects worth following.
The half of it is 2. If R2 is 1kOhm, you have: Using a voltage divider.
The problem was somewhere else. A better view of the optocoupler: There are two clear divisions on this circuit board, the rubber pads are even marking it, along with silkscreen and areas without components.
Has anyone solved this problem? About Us Contact Hackaday.
SMPS are much more complex, but this is enough to give a good understanding on the theory of operation.