Hi Guys,
I was hoping someone could point me in the right direction here. I have a 30 watt solar panel and I wired 2 buck converters to it. One buck convert changes the voltage from 19.5v to 12v. The other one drops the voltage from 19.5v to 5v. I use a 10 channel AA/AAA battery charger on the 12v line and a USB power supply for the 5v line.
Here is the issue. I think I need to use diodes because the 5v buck converter died. I put in a new buck converter and it started humming. When I shut off the 12v buck converter, the 5v buck converter stopped humming and worked fine. Then, when I turned the 12v buck converter back on, the 12v didn't supply power to the batteries and the 5v converter started humming again.
I have the two buck converters hookup in parallel with the panel and no diodes. Apparently, there is feedback occurring between these buck converters and I am thinking a few diodes would be the correct solution. For a 30w solar panel and 25w buck converters, what do you recommend I do? How do I use a diode? How do I wire it in? Do I put a diode on the positive line only or on both the positive and negative lines? Do I need two diodes or four? How do I know which direction to put the diode on the line?
Any advice would be greatly appreciated.
I was hoping someone could point me in the right direction here. I have a 30 watt solar panel and I wired 2 buck converters to it. One buck convert changes the voltage from 19.5v to 12v. The other one drops the voltage from 19.5v to 5v. I use a 10 channel AA/AAA battery charger on the 12v line and a USB power supply for the 5v line.
Here is the issue. I think I need to use diodes because the 5v buck converter died. I put in a new buck converter and it started humming. When I shut off the 12v buck converter, the 5v buck converter stopped humming and worked fine. Then, when I turned the 12v buck converter back on, the 12v didn't supply power to the batteries and the 5v converter started humming again.
I have the two buck converters hookup in parallel with the panel and no diodes. Apparently, there is feedback occurring between these buck converters and I am thinking a few diodes would be the correct solution. For a 30w solar panel and 25w buck converters, what do you recommend I do? How do I use a diode? How do I wire it in? Do I put a diode on the positive line only or on both the positive and negative lines? Do I need two diodes or four? How do I know which direction to put the diode on the line?
Any advice would be greatly appreciated.
