Transformer Wiring?

Killjoy99 · 22nd September 2004, 05:56 PM

I just bought a transformer for my P101 and the input/output schematics looks a little different than I'm used two. It has dual secondaries and the layout is shown below.

Correct me if I'm wrong but I should connect the primary 0 and 115V connections to AC via fuse and switch. Connect the secondary 0's together or ground and run each of the two 50's into each of the two AC's of the rectifier bridge.

I'm in the US so AC outlets at 115V

Thanks for the help.

Tube_Dude · 23rd September 2004, 01:27 AM

Quote:

Originally posted by Killjoy99

Correct me if I'm wrong but I should connect the primary 0 and 115V connections to AC via fuse and switch.

Correct!

Quote:

Connect the secondary 0's together or ground and run each of the two 50's into each of the two AC's of the rectifier bridge.

You must connect one of the secundary 0 to the secundary 50 of the other secundary and ground. The other 0 and other 50 to the AC input of the rectifier bridge.

Regards

Killjoy99 · 2nd October 2004, 08:13 PM

Well today I started to work on P39 Soft-start circuit via Rod's PCB. I ordered a 9V Toriodal Transformer to power the relays as seen in the Schematic on his site.

P39 Schematic

I'm not sure how to wire the transformer as it is shown in the schematic. Here is the Datasheet for the transformer. There are 4 leads on the primary which by the data sheet should be paired up for 115V operation.

I'm not sure what to do with the 4 Secondary Leads other than just pair them up. Please help.

Transformer Datasheet

paulb · 2nd October 2004, 10:29 PM

You need 9 volts AC from the transformer. What transformer did you get? Assuming you got a 2x9V unit like the 62001, just use one of the secondaries. You could parallel them but you don't need much current (unless you're using really big relays) so no need.

Killjoy99 · 2nd October 2004, 11:00 PM

Yah the transformer I bought is a 2x9V toriodal from the datasheet.

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2nd October 2004, 08:13 PM	#3
Killjoy99 diyAudio Member Join Date: Dec 2003 Location: Seattle, WA	Well today I started to work on P39 Soft-start circuit via Rod's PCB. I ordered a 9V Toriodal Transformer to power the relays as seen in the Schematic on his site. P39 Schematic I'm not sure how to wire the transformer as it is shown in the schematic. Here is the Datasheet for the transformer. There are 4 leads on the primary which by the data sheet should be paired up for 115V operation. I'm not sure what to do with the 4 Secondary Leads other than just pair them up. Please help. Transformer Datasheet

2nd October 2004, 10:29 PM	#4
paulb diyAudio Member Join Date: Jun 2001 Location: Calgary	You need 9 volts AC from the transformer. What transformer did you get? Assuming you got a 2x9V unit like the 62001, just use one of the secondaries. You could parallel them but you don't need much current (unless you're using really big relays) so no need.

2nd October 2004, 11:00 PM	#5
Killjoy99 diyAudio Member Join Date: Dec 2003 Location: Seattle, WA	Yah the transformer I bought is a 2x9V toriodal from the datasheet.