Dual power to single power rectifier filter

[DNic]

While browsing I stumbled across this little unit.
https://www.google.com/url?sa=t&rct...0636547.html&usg=AOvVaw1cK44bh8dR93w0nk2DjbJz

As I have several +/- trans that I have removed from none working units over time, I wondered in it would be any good to convert them to a single line.
Also if I had say a +/-25 VAC tans rated at 300 watt. What could I expect when passing the voltage through this unit. More VDC of more power, or no change?

Cheers

 

[picowallspeaker]

Oh well...
I see two diodes in one body attached to a heatsink and two paralleled caps

 

[DNic]

So, Still no wiser as to the effect on the Voltage/amperage. this is why beginners ask questions, to learn.

Cheers

 

[rayma]

Says 8A in the ad, but this is probably the diode rating. So maybe 4A output DC.
But the filters are only 3300uF, so probably less than 4A, perhaps 2A.
Remember that the transformer secondary must have a center tap.

 

[PRR]

As I have several +/- trans

Transformers are AC, and AC does not have +- polarity.

Do you mean "center tapped"?

 

[Francois G]

While browsing I stumbled across this little unit.

I wondered in it would be any good to convert them to a single line.

If OP could clarify the question, or what he wants to accomplish, the replies might be more useful. The title of the thread is also unclear.

Also if I had say a +/-25 VAC tans rated at 300 watt. What could I expect when passing the voltage through this unit. More VDC of more power, or no change?

I don’t understand the question in the last sentence. It would be useful to OP to check some basic sources and clarify the questions.

The Hammond website has some basic stuff on transformers, rectifiers and power supplies that might be useful. Pg #16 below is from there:https://www.hammfg.com/files/literature/5c.pdf

 

[DNic]

Hi guy's, thanks for the clarification. yes you are correct i mean center taped trans.
So correction the question: I have say a 25 VAC center tapped tans rated at 300 watt. What could I expect when passing the voltage through this unit. More Voltage of more power, or no change?

Cheers

 

[JMFahey]

To begin with, the article title/name is WRONG.

It is not "Dual power to single power rectifier filter board dual power transformer to single power board single power" but "center Tapped transformer to single polarity DC supply, Full Wave rectified"

DC voltage will be peak of the AC voltage, per winding (you have two in series or a single one center tapped,same thing) so your 25VAC center tapped transformer means 12.5VAC + 12.5VAC windings.

12.5VAC means 1.4142*12.5 VDC so supply will charge to 17VDC (17.7 V peak minus 0.7V diode drop)

 

[DNic]

Does does that mean the max amperage increase

Cheers

 

[romanescu]

Hi guys, I don t want to create another thread because I think the answer is simple 🙂. I have 2 transformers 0-24V and I want to connect them to create a 24-0-24 V centered tap trafo for Pass PSU.
How should I connect them ?

I have attached a picture that I think is good.

kimd regards

 

[analog_sa]

This type of connection is very common and used often in commercial equipment. Some NAD amps are like that and many others.

 

[romanescu]

So It's ok like this ?

 

[JMFahey]

Yes.

 

[romanescu]

Thank you

 

[analog_sa]

Yes, it's fine.