Reverb driver (transformer)

5150loveeddie · Post by **5150loveeddie** » Sun Mar 04, 2007 2:51 am

I'm trying to figure out if a fender reverb driver transformer is dead or operatinal!!

In the Weber book it says to do a continuity check, put someone told me that a meter threshold for continuity (bip sound..to occur) can be 150ohms, or more or lower even....

So my question is how do you test those little reverb transformers??

They have two primaries wires (input) and two secondaries wires (output)..

thanks for any help!!

Flames1950 · Post by **Flames1950** » Sun Mar 04, 2007 8:15 am

Can you unhook the wires, apply voltage to one side and see what you get at the other side? Only problem is I don't know where to find the turns ratio of the Fender reverb driver tranny.

novosibir · Post by **novosibir** » Sun Mar 04, 2007 3:05 pm

Flames1950 wrote:Only problem is I don't know where to find the turns ratio of the Fender reverb driver tranny.

About 1:40

But simply measure the primary (red-blue) and secondary (green-black) with a ohmmeter for interrupt.

Larry

5150loveeddie · Post by **5150loveeddie** » Sun Mar 04, 2007 3:38 pm

Flames1950 wrote:Can you unhook the wires, apply voltage to one side and see what you get at the other side? Only problem is I don't know where to find the turns ratio of the Fender reverb driver tranny.

With a 9v battery would do the trick?

Flames1950 wrote: Only problem is I don't know where to find the turns ratio of the Fender reverb driver tranny.

novosibir wrote:
Flames1950 wrote:Only problem is I don't know where to find the turns ratio of the Fender reverb driver tranny.
About 1:40

But simply measure the primary (red-blue) and secondary (green-black) with a ohmmeter for interrupt.

Larry

For interrept???, do you mean nothing at all on the meter, how about 0.1ohm....that is not open right??

Turns ratio? 1volt I would get 40 on the other side???

I'm so new at reverb...lol

thanks guys!!

novosibir · Post by **novosibir** » Sun Mar 04, 2007 7:24 pm

5150loveeddie wrote:With a 9v battery would do the trick?

If you can find one, who gives AC out

Keep in mind, that every tranny only may translate AC - and never DC!

5150loveeddie wrote:Turns ratio? 1volt I would get 40 on the other side??? I'm so new at reverb...lol

That's not Reverb stuff, that's tranny stuff!

So when you're afraid of high voltages, then connect 6.3V heater AC to the primary (red-blue) and look for .15V...0.2V on the 'other' side

Larry

5150loveeddie · Post by **5150loveeddie** » Sun Mar 04, 2007 10:31 pm

Interesting.........Danke!!