Thank you very much for the publication! Awesome solution with the programming!

Do you have a closeup picture of the soldering points for the resistor? Thanks

hp model hstns-pl28, is there a way to fix this? Doesn't let the ovp system using resistance

wow! just wow! anyway, can you figure a way to just program the power supply to output a fixed voltage without any resistors? except the one to turn on the psu?

is it possible to limit the maximum current, just like it was done in HSTNS-PL11?

Can you show step by step or make documentation for HSTNS-PL30? And only the "HSTNS-PL30" number matters, or do others on the power supply as well?

hi, is there any possibility to limit the current at the level of 50Amps?

Does this mod work on the pl33

Too bad that it is not well appreciated where you are sold 😔

Hey I want to modify my unit to work with 13.8V I guess if I'll solder proper resistor in the same place as your pot it should work right? Could you tell me what kind of resistor is needed there in order to have 13.8V? There is a lot of radio amateurs using this kind of power supply, but this particular model PL29/PL30/PL42 are not documented on how to achieve 13.8V

@taoli1239

Жыл бұрын

To achieve an output of 13.8 volts, you will need to connect a 1.8 kilohm(R1) resistor in parallel. Additionally, for OVP adjustment, it is recommended to parallel an approximately 6.63 kilohm(R2) resistor. WolframAlpha Solver Output 13.8V www.wolframalpha.com/input?i=R_11%2F%28R_11%2B39.2%2B10%2B4420%29*V_1%3D0.58%2CR_11%3D220*R_1%2F%28R_1%2B220%29%2C1%2F%281%2B3.92%29*12.32%3DR_12%2F%28R_12%2B3.92%29*V_1%2CR_12%3DR_2*1%2F%281%2BR_2%29%2CV_1%3D13.8 BOM: MFR-25FBF52-1K8 www.mouser.com/ProductDetail/YAGEO/MFR-25FBF52-1K8?qs=oAGoVhmvjhxFlUUkv6aTEg%3D%3D MFR-25FBF52-6K65 www.mouser.com/ProductDetail/YAGEO/MFR-25FBF52-6K65?qs=oAGoVhmvjhxWvnw0xrYM6w%3D%3D

Do you Have Review Liteon PS 2122-3H ?

Is there a way to modify the OVP with resistors?

@taoli1239

Жыл бұрын

Adding a resistor between the 14th pin of the MCU(dsPIC33FJ64GS606) and ground can increase the OVP voltage.

Can you do some with hp hstns-pl28 ?

@taoli1239

Жыл бұрын

Thank you for reaching out to me regarding the HP HSTNS-PL28 power supply modification. I will gladly look into the possibility of modifying the power supply.

@user-jq4jn6pg8o

Жыл бұрын

​@@taoli1239😊

Are you the github repo owner?

Far better to put an SPST switch on the front instead of a resistor, at least then you can turn the power supply on and off without having to unplug the mains. Better than a live DC output.

@taoli1239

Жыл бұрын

Thank you so much for your suggestion! I agree with your point, using an SPST/Pushbutton switch instead of a resistor is a wise choice. It makes it more convenient to control the power supply without having to unplug the mains.

+ Nice ! can you do same with hp hstns-pl11 ? =)

@taoli1239

Жыл бұрын

I have modified PL11, but I didn't film it

@DollarJonny

Жыл бұрын

@@taoli1239 If you can make a video with step - by - step instructions , then I and thousands of people will be grateful to you for it . Thanks =)

@taoli1239

Жыл бұрын

@@DollarJonny I have uploaded a video about modifying the power supply of PL11. It may be helpful for you.

@DollarJonny

Жыл бұрын

@@taoli1239 Thank you ! =)

Bisu

Something is wrong with this HSTNS PL-30 resistors modification. I'm not sure about reprogramming but who going to buy $100 programmer to mod $20 power supply once in life?

@taoli1239

7 ай бұрын

In theory, it should work. Not sure what issues you're running into. Can you share more details on the problems you're facing?

@snail2171

7 ай бұрын

@@taoli1239 Thank you for response. Issue is solved. I put bypass resistor in wrong circuit. After I realized my mistake just soldered SMD 1.8 K resistor right over existing. It bring voltage to 13.8 volts. Second resistor wasn't installed because everything is working fine. Thank you again.