12 volt relay tranny?

[Frankie]

I just found a transformator jused by alesis for their micro serie effects.
The tranny reads 11,2 Vac. I have a 12 volt regulator in my ODS. The DCV reads 29,5 v from the rectified board to the regulator. Will this be to much voltage to handle for the regulator?
The regulator is the same ceriatone use in their builds, but the AC power in their builds are 6 VAC to the rectifier board.
The relays reads 12.0 Vdc.

Frank.

[ToneMerc]

Assuming this is a LM78xx style regulator you should be ok. Depending upon brand the max for a LM7812 is typically in the 32-36 volt range. The LM78xx is most thermally effective if you keep the input voltage only 2-3 volts above the target output, anything higher is just wasted and is dissipated in the case as heat.
Therefore, you definitely want to install a heatsink(w/thermal grease) if you intend to put almost 30VDC at it's input. If used without a heatsink, it most likely will cook itself in an environment with limited airflow.

TM

[Structo]

It sounds like you are using a voltage doubler rectifier setup with that tranny.
Why did you do that?
You could use a bridge and a 12v regulator and probably be fine and not have to worry about the excess heat.

[Frankie]

It sounds like you are using a voltage doubler rectifier setup with that tranny.
Why did you do that?
You could use a bridge and a 12v regulator and probably be fine and not have to worry about the excess heat.

I used the 124 layout, and was hoping to get a 6v tranny, but seems like I need to rewire the rectifier setup.
Then I need a layout to fit for this tranny.
If someone have a schematic or layout to post, I´ll be glad.

Frank

[Frankie]

Finally the relays work fine.
14.5 Vdc into the regulator. 12Vdc steady on the relays.
Did rewire the rectifier board.
The first one was a doubler.

Thank you guys for helping.

Still one problem left. Clean volum??

Frank.