In the video we have lowered the voltage from 19v to 16v as well as 12v. you have the solution now how to fit your voltage adapter as well as your device with adapter
This is universal for all adapters that if you change that specific part you can change the voltage. So in conclusion you would need a scheme for all adapters and that is not possible since this is meant only as a example. Thanks for feedback i wish you a awesome weekend.
Great idea. I never thought of this. The TL431 shunt regulator is in almost all power supplies for regulating the output voltage. I will have to keep this in mind next time I need to change the voltage on a laptop power supply. I salvage these when ever I can from folks who just throw everything away or I get them for a dollar from thrift stores. Great high amperage PSUs. Great PSU for powering LED circuits.
If you need 14.5k of resistance, and already have a 27k SMD resistor in-place, you could have soldered another 33k resistor on top, or with a 1/8w axial resistor between two existing pads that are electrically connected. Then you'll have 14.85k Ohm, without having to painfully remove that SMD resistor. And quick and easy to change it back to factory voltage without finding that darn tiny resistor you took out.
Wondering if someone can help me change the voltage from a li-ion charger from 54.6 to 52v. I do have soldering skills, just not the skills to figure how to do the convert(what to change and where)
Sir Thank you my laptop adapter out put is 19.4 but know its coming 21.4 laptop display also not coming sir and power supply So can I try this method to my adapter or any component I want to change please tell me in reply sir Thanks again
hello please I want to change the voltage of HP adapter(model: series ppp014) from 19V, 4.7A to 12V, 500mA '. Which resistor will I replace and with what value of the resistor
I'm trying to lower the voltage according to your video. One question before I to do so is why decrease the resistor instead of increase it to lower the voltage? I'm worried and want to make sure to avoid any accidents may occur. Thank you.
Sir I have hp computer charger which provides out put supply 19 volt but I require only 12 volt .please guide possitivily.hope you will definitely answer.
or just make an external board with multiple resitors and a switch to change the voltage so u dont have to open the adapter and it will serve you without soldering every time u need different voltages.
Hello! The original output of my adapter was 24v. I dropped it to 19v. But the output voltage is not stable. It fluctuates between 17 volts and 19 volts. Why?
i have lenevo laptop charger which gives me 20 volt can you please give me your email id so that i can send you the picture of the laptop charger for further guidance from your side . to control the voltage as per my desire .
you need to lower the resistor smaller. as in the video. we have reduced the resistor from 27ko 19v to 14.50ko 12v. but be careful without multimeter don't try
need help with my bosch gml50 radio .went crazy after year on the attic. All buttons works randomly round ones volume and station change 🤔any clues how to fix it ?please please please 👍😉