How to add a two ouput voltages i.e., O/P 1 and O/P 2 ?

[ishwaryasampath]

Hi
Please find the attachment file. The question is " how to add the two output voltages?"

 

[GUMY]

You can not multiply voltage this way.

 

[ishwaryasampath]

Then tel me a alternate solution

 

[GUMY]

You have to explain the application.

 

[ishwaryasampath]

i m not using this application oriented. i m just tried this. The concept is, one bridge rectifier output is 150VDC another one bridge rectifier output is 150VDC.if we need 300VDC, how to add these two outputs.

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And also i have one doubt. the way giving input to the two bridge rectifiers is correct or wrong.

 

[GUMY]

You can not add two DC voltages this way, as they are coming from the same AC voltage source. Bridge rectifier does not make it "another " voltage.
Connection of bridge rectifier to transformer is OK.

 

[FvM]

The usual solution is a voltage doubler circuit. https://en.wikipedia.org/wiki/Voltage_doubler

It acts as a combination of two halfwave rectifiers, the output ripple frequency is 50 Hz instead of 100 Hz for the fullwave rectifier and you need double the capacitor values to achieve similar output ripple.

 

[GUMY]

But this works only for small power (current) applications, otherwise capacitors have to be extremely large.

 

[FvM]

But this works only for small power (current) applications, otherwise capacitors have to be extremely large.

Double isn't extremely large, I think.