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Old 29th February 2012, 07:47 PM   #11
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Hi,
What it is the Ac input voltage for the transformer? Maybe your using a 120 volts AC input transformer in a 220 Ac.
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Old 29th February 2012, 07:49 PM   #12
pdul is offline pdul  Denmark
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Maybe you have connected the trafo wrong. Are you shure you have measured both rails ?
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Old 29th February 2012, 07:52 PM   #13
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Measure the AC voltage going to the bridge. If the AC voltage more than 20 something than you are using 18v to 18v taps for a total of 36v. Wire up the transformer from one of the 18v taps to the 0v center tap. This will drop your voltage by half since you are only using one of the two winding available.
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Old 29th February 2012, 08:03 PM   #14
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Quote:
Originally Posted by tauro0221 View Post
Hi,
What it is the Ac input voltage for the transformer? Maybe your using a 120 volts AC input transformer in a 220 Ac.
No, Here in My city it is hard to find a Transformer with primary 120volt, I am 100% sure that the Ac input for my trans is 220v because i needed it that way.
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Old 29th February 2012, 08:05 PM   #15
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Quote:
Originally Posted by pdul View Post
Maybe you have connected the trafo wrong. Are you shure you have measured both rails ?
Connection is Correct,, Yes i have measured both the rails.

Plz let me check again

Last edited by SLAK; 29th February 2012 at 08:12 PM.
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Old 29th February 2012, 08:22 PM   #16
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Originally Posted by SLAK View Post
Connection is Correct,, Yes i have measured both the rails.

Plz let me check again
My Bad.... It seems i made a mistake while making the connections, Connection was as Shown below.

Trans AC1 (18v) -------->> PCB AC1 in
Trans 0volt -------->> PCB AC2 in
Trans AC2 (18v) -------->> PCB 0v in

Now i have disconnected the bad connections. Before I make the correct connections, does any one think that i might have some how damaged the transformer because of the bad connection???
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Old 29th February 2012, 08:26 PM   #17
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Transformer should be fine
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Old 29th February 2012, 08:28 PM   #18
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Quote:
Originally Posted by Andy Bartha View Post
Measure the AC voltage going to the bridge. If the AC voltage more than 20 something than you are using 18v to 18v taps for a total of 36v. Wire up the transformer from one of the 18v taps to the 0v center tap. This will drop your voltage by half since you are only using one of the two winding available.
My Bad.... It seems i made a mistake while making the connections, Connection was as Shown below.

Trans AC1 (18v) -------->> PCB AC1 in
Trans 0volt -------->> PCB AC2 in
Trans AC2 (18v) -------->> PCB 0v in

Now i have disconnected the bad connections. Before I make the correct connections, does any one think that i might have some how damaged the transformer because of the bad connection???
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Old 29th February 2012, 08:30 PM   #19
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Originally Posted by Andy Bartha View Post
Transformer should be fine
Thats good to know, so should i be worried about some faulty component.
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Old 29th February 2012, 08:33 PM   #20
pdul is offline pdul  Denmark
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What is the voltage of your capacitors?
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