PSU hack

change laptop PSU output from 19V to 24V



Resources


# Name Category Reference Description
1 laptop PSU from an old hp dv2000 material 100-240V AC to 19V 4.74A DC
2 Modifying a notebook power supply tutorial basic tutorial from hackaday
3 Online calculator - EIA-96 SMD resistor tool resistor calculator
4 Over-voltage Protection Circuits tutorial zener diode for over voltage protection
5 SCR Thyristor Crowbar: overvoltage protection circuit tutorial another crowbar circuit using zener diode and SCR for over voltage protection
6 BZX84C20 material BZX84_SER.pdf sot23 zener diode
7 Lite on Acer AC-DC 19V Adapter schematic schematic In russian, LTA301P datasheet missing
8 TI Shunt Reference Considerations for Flyback Converters with Optocoupler Feedback tutorial 2:17 feedback process with tl431
9 How does this flyback feedback circuit work? tutorial Reply #1, when Vout surpass the threshold voltage, this will cause TL431 avanlanche the pin 1 and 3 like Zener diode, and optocoupler is active, then the feedback pin of SG6859A will be tied to 0 voltage, then duty circle reduces.
10 SG6859A.pdf datasheet Green-Mode PWM controller for Flyback Converters by Fairchild in res #9
11 LD7750R-DS-00.pdf datasheet Green-Mode PWM controller of LCD monitor power supply panel of my own
12 tl431.pdf datasheet Precision Programmable Reference (Voltage) by TI used in res #8
13 Switching regulator fundamentals.pdf tutorial TI document on switching regulator
15 PHILIPS 170B4 LCD Monitor Switch Power Supply Circuit schematic PHILIPS 170B4 LCD Monitor Switch Power Supply Circuit
16 tea1533ap.pdf datasheet SMPS (Switched Mode Power Supply) control IC by Philips used in res #15
18 200W PC ATX power supply schematic 200W PC ATX power supply using TL494
19 実験用スタンダード電源設計実例集 book トランジスタ技術SPECIAL
20 Top224 datasheet PWM Controller used in pp.32 of res #19 by Toshiba, with transistor integrated
21 Topswitch-GX family datasheet More wattage than #20
22 TA76431S datasheet Voltage reference used in pp.32 of res #19 by Toshiba
23 What is the best Reverse Voltage Protection Circuit? || Repairing a Lab Bench Power Supply tutorial Reverse circuit protection (vincent)
24 How to make a Softstarter and why it is sometimes mandatory to use! tutorial soft starter
25 LTSpice IV Buck Converter tutorial LTspice basics
26 crowbar circuit tutorial wiki page with a schematic using LM431 Overvoltage protection
27 220V SMPS Cell Phone Charger Circuit tutorial * Schematic included


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