Hi,
I am currently working on a power supply that provides two independently adjustable and voltage-regulated outputs (one negative and one positive). It is a project from my electronic book ("Electricity and Electronics" by G. R. Slone) and I am self-studying it.
After I have installed two 24 volt transformers and a 6-amp 200 volt bridge rectifier module, along with a fuse and some wiring. (I have attached the schematic diagram) I connected the two transformers in series and used the middle as circuit common. Then, I've connected the transformer to the bridge. In the end, I connected a 10K ohms resistors (RT1) to the positive output of the bridge, and another 10k resistors (RT2) to the negative output. And the other ends of both resistors are connected to the circuit common. I tried to test the outputs under the instruction of the book.
I have first measured the DC voltage across RT1 and RT2, they are about 24 volts and -24 volts respectively as the book suggests. However, when I was measuring the AV voltage across RT1 and RT2, I got 50 volts and 0 volts respectively, while the book suggests 12 volts for both resistors. The book says the AC voltage is called the AC component or the ripple. But it didn't explain any situation like mine. So, is my measurement indicating anything wrong in my circuit? What's the explanation behind it?
Thanks a million.
I am currently working on a power supply that provides two independently adjustable and voltage-regulated outputs (one negative and one positive). It is a project from my electronic book ("Electricity and Electronics" by G. R. Slone) and I am self-studying it.
After I have installed two 24 volt transformers and a 6-amp 200 volt bridge rectifier module, along with a fuse and some wiring. (I have attached the schematic diagram) I connected the two transformers in series and used the middle as circuit common. Then, I've connected the transformer to the bridge. In the end, I connected a 10K ohms resistors (RT1) to the positive output of the bridge, and another 10k resistors (RT2) to the negative output. And the other ends of both resistors are connected to the circuit common. I tried to test the outputs under the instruction of the book.
I have first measured the DC voltage across RT1 and RT2, they are about 24 volts and -24 volts respectively as the book suggests. However, when I was measuring the AV voltage across RT1 and RT2, I got 50 volts and 0 volts respectively, while the book suggests 12 volts for both resistors. The book says the AC voltage is called the AC component or the ripple. But it didn't explain any situation like mine. So, is my measurement indicating anything wrong in my circuit? What's the explanation behind it?
Thanks a million.
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