Hello everybody.
I am trying to increase my power Supply's default 12V 3.3A output to something like 20V 3A. I Decided to use a potential resistor via the shunt regulator at the opto-coupler which i was sure it had. But the problem is that when i opened the power supply, most of the output side was significantly just SMD components that i am honestly not used to and not confident to work with. Things got very wrong very quickly when i realized i couldn't directly understand what the SMD part of the output was doing.
So at this point i need some help from my fellow colleagues in decrypting the circuit of the power supply and possibly suggesting your opinions on what is the best way to change the output voltage without dramatically over-engineering the entire thing.
Ive attached some camera shots of the board bellow. The PSU itself was a dstv explorer decoder power supply that i salvaged and when i tried to google the schematic, i got nowhere. Thus why i ended up here.
I appreciate any assistance in advance!
I am trying to increase my power Supply's default 12V 3.3A output to something like 20V 3A. I Decided to use a potential resistor via the shunt regulator at the opto-coupler which i was sure it had. But the problem is that when i opened the power supply, most of the output side was significantly just SMD components that i am honestly not used to and not confident to work with. Things got very wrong very quickly when i realized i couldn't directly understand what the SMD part of the output was doing.
So at this point i need some help from my fellow colleagues in decrypting the circuit of the power supply and possibly suggesting your opinions on what is the best way to change the output voltage without dramatically over-engineering the entire thing.
Ive attached some camera shots of the board bellow. The PSU itself was a dstv explorer decoder power supply that i salvaged and when i tried to google the schematic, i got nowhere. Thus why i ended up here.
I appreciate any assistance in advance!
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