TIU with ZW-L Buzzing

Need to look at the output of the ZW with a scope.  Does it do it on all 4 channels of the ZW?  G

@GGG posted:

Need to look at the output of the ZW with a scope.  Does it do it on all 4 channels of the ZW?  G

I would have to check other handles on the ZW-L.  I will see if that make any difference.

I don't have a scope so can't really do that and wouldn't know what I am looking at if I did, lol.

I do have the ZW-L set to 4 independent channels, not a single one, as I use the other handles for to power other things, like for the LCS modules and other things.

Thanks

The ZW-L isn't a recommended transformer to use as it puts out chopped wave form. The Z-4000 is pure wave form as well as a PW ZW. This might be why the ZW-1 causes the buzzing.

What the heck is a ZW-1? One may infer you were trying to reference the ZW-L?

Any ways, while the ZW-L is an "electronic" transformer, its output at full throttle is essentially a pure sine wave. So the real recommendation would be to check that the throttle is indeed set to full throttle, not swap transformers.

Here is what triac driven chopped sine waves of a typical "electronic" transformer look like:

I have no electronic expertise at all.......but I can tell you that I have never had any buzzing with my TIU ZW-L set up. I routinely set the dials to 17-18 volts.

Each ZW-L circuit went through a separate input on the TIU: outer loop, inner loop, yard and subway loop

Peter

Any ways, while the ZW-L is an "electronic" transformer, its output at full throttle is essentially a pure sine wave. So the real recommendation would be to check that the throttle is indeed set to full throttle, not swap transformers.

May very well be the problem.

@Putnam Division posted:

I have no electronic expertise at all.......but I can tell you that I have never had any buzzing with my TIU ZW-L set up. I routinely set the dials to 17-18 volts.

Each ZW-L circuit went through a separate input on the TIU: outer loop, inner loop, yard and subway loop

Peter

Thats what I would have thought.  I set it to 18 volts for my Legacy Engines. So wouldn't want it at full throttle.

I will have to do some more testing, but like I said, using it with the Z-4000 the TIU is silent.

I can't believe buzzing would be a good thing, haha.

Thanks

I have a ZWL and all four outputs are hooked up to the four inputs to my TIU, no issues.