Using 12 EL519 for T8

[ackcheng]

Dear Sir,

I am just thinking if I use 12 EL519 for a Transcedent T8 instaead of the original 8 inorder to increase the power. Should I change the spec for the fuse? I am going to use two 300VA transformers in parallel to deliver 135V-0-135V. (The origianl deisgn was 120-0-120 but I can only find the 135-0-135 availble. I will change the bias resistors)

Arthur

[fdegrove]

Hi,

I am going to use two 300VA transformers in parallel to deliver 135V-0-135V.

You'll end up about 15VDC too high so I suggest you put a dropping resistor between C18- C20 and C19- C21 respectively.

Should I change the spec for the fuse?

Is that a 500mA Slow Blow fuse?
If so, go for the next one up if you see the fuses blow for no apparent reason.

Cheers,

[icebear]

Doesn't VA stand for Voltage Ampere, which means Watts?

Has not really anything to do with the actual voltage you get from the transformer.

Am I rigth?

[fdegrove]

Hi,

Doesn't VA stand for Voltage Ampere, which means Watts?

Yes, only that's not the problem.

The point is that the original xformer is 120V-0-120V, not 135-0-135V.

Cheers,