I have a pl30 with no modifications done tocit yet. When I plug it into the mains the fan spins very slowly without the 330ohm jumper between 33 and 36. The output voltage is 0. When I jump the pins, the output voltage goes to 12.30. Is it normal for the fan to spin slowly before jumping the pins?
I ordered something else... but received one of these, Thanks to this video and the repo instructions, it looks like it will still work for my car programming requirements. I too am trying to achieve 13.8V. From your repo instructions, it is my understanding i need to run a 1.8k ohm resistor in parallel to the existing 221 resistor. Where i am confused is with the OVP, i am trying to achieve 14.8v cut off. Access to the 01B resistor is impossible (without removing the board) Am i correct in thinking that a resistor, 6.63k ohm in my case, from AN2 (pin 14) to ground will achieve the same thing as running a resistor in parallel to the 01B resistor on the impossible to access rear of the board ?? Is there also adjustment to OVP using the potentiometers on the board, or am i better off leaving them alone ? Honestly if i had a programming interface, i would have used your github code to programme OVP. Thanks
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
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
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?
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.
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.
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.
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 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.
Thank you very much for the publication! Awesome solution with the programming!
I have a pl30 with no modifications done tocit yet. When I plug it into the mains the fan spins very slowly without the 330ohm jumper between 33 and 36. The output voltage is 0. When I jump the pins, the output voltage goes to 12.30. Is it normal for the fan to spin slowly before jumping the pins?
I ordered something else... but received one of these, Thanks to this video and the repo instructions, it looks like it will still work for my car programming requirements. I too am trying to achieve 13.8V.
From your repo instructions, it is my understanding i need to run a 1.8k ohm resistor in parallel to the existing 221 resistor. Where i am confused is with the OVP, i am trying to achieve 14.8v cut off.
Access to the 01B resistor is impossible (without removing the board)
Am i correct in thinking that a resistor, 6.63k ohm in my case, from AN2 (pin 14) to ground will achieve the same thing as running a resistor in parallel to the 01B resistor on the impossible to access rear of the board ??
Is there also adjustment to OVP using the potentiometers on the board, or am i better off leaving them alone ?
Honestly if i had a programming interface, i would have used your github code to programme OVP.
Thanks
@@MrJenseneverest You’ve got it right. The potentiometer adjustments on the board are all related to current, so they won’t help with adjusting OVP.
Good morning I have a dps 800gb-2A. Compared to this one in the video is there a difference in making the transformation? Thanks
Too bad that it is not well appreciated where you are sold 😔
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?
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
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
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?
Do you have a closeup picture of the soldering points for the resistor? Thanks
This would be great👌
is it possible to limit the maximum current, just like it was done in HSTNS-PL11?
hp model hstns-pl28, is there a way to fix this? Doesn't let the ovp system using resistance
hi, is there any possibility to limit the current at the level of 50Amps?
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.
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.
Hi i have hp Model no. HSTNS-PL14 i want modification 12v to 14v please share details thanks.
Do you Have Review
Liteon PS 2122-3H ?
Can you do some with hp hstns-pl28 ?
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.
@@taoli1239😊
Does this mod work on the pl33
Все закрив і нічого не видно
Are you the github repo owner?
Is there a way to modify the OVP with resistors?
Adding a resistor between the 14th pin of the MCU(dsPIC33FJ64GS606) and ground can increase the OVP voltage.
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?
In theory, it should work. Not sure what issues you're running into. Can you share more details on the problems you're facing?
@@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.
+ Nice ! can you do same with hp hstns-pl11 ? =)
I have modified PL11, but I didn't film it
@@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 =)
@@DollarJonny I have uploaded a video about modifying the power supply of PL11. It may be helpful for you.
@@taoli1239 Thank you ! =)
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