20VA power TX for G9?

[monty]

Do you think I could get away with 20 VA for the power TX's???

 

[gyraf]

hard to say. transformers are very different in their behaviour. I would use the values specified - after all, that's why they're there.

Jakob E.

 

[monty]

Totally understand Jacob,

its just what I have lying around, so Ill give it a go and see what happens :grin:

 

[matthias]

20VA is not enough..

I have tried 25VA in my G9 and the transformer was getting hot and the voltage was dropped down... I think 30VA is minimum...

 

[monty]

:shock: :shock:

Well after all the problems I had over the weekend, I tried two replacement TX's (20VA tho unfortunately) and it WORKS first time. I think I possibly could have had some dud TX's first up.

Anyway, im stoked its now working!! :grin:

how 20VA holds up though, I guess we will just have to see...

 

[monty]

[quote author="matthias"]20VA is not enough..

I have tried 25VA in my G9 and the transformer was getting hot and the voltage was dropped down... I think 30VA is minimum...[/quote]

bugger! :grin:

Been on for 90 mins now, transformer is barely warm, I was thinking Id got away with it. Foiled! :grin:

 

[gyraf]

if it dosen't get hot in three or four hours, you're on the safe side..

 

[monty]

[quote author="gyraf"]if it dosen't get hot in three or four hours, you're on the safe side..[/quote]

Well so far so good Jacob...

a question if I may...

Does the VA rating of a power TX affect headroom of the device ??

 

[gyraf]

not unless it delivers too low a voltage

 

[monty]

Well its been over 4 hours now and the TX is only barely warm, couldnt even call it warm actually.

Guess Ill box it up and see how we go. :grin:

 

[gyraf]

:thumb: