F5 power amplifier

[wensan]

Originally Posted by Nelson Pass

You can easily build a balanced F5 with dual diff pairs.

Who wants the glory of posting the schematic?

Like this?

[Zen Mod]

Originally Posted by wensan

Like this?

nope ;

this way is more functional ;

[Nelson Pass]

That's one. I can think of a couple others...

[Zen Mod]

Originally Posted by Nelson Pass

That's one. I can think of a couple others...

seems that there is more than few ways to skin a ... UGS .....

[Zen Mod]

[wensan]

Originally Posted by Nelson Pass

That's one. I can think of a couple others...

I wonder this one will be better or not ?

[umut1001]

Originally Posted by alazira

Hi umut1001,

Using 15R instead of 10R will reduce the Idss (see fig 4B, page 28 of Borbelly Part 1) of the jFET.

hi..I matched my jfets and there are high IDSS ones.12ma.Maybe i can use them.
Also i am waiting for a good bridged circuit

[Blues]

Originally Posted by umut1001

hi..I matched my jfets and there are high IDSS ones.12ma.Maybe i can use them.
Also i am waiting for a good bridged circuit

Save your high Idss jfets for a long tail differential inputs (Aleph J) and use 6 or 7mA BL jfets or even highish GR rated ones. The F5 jfets are set for about 4mA or less.

[Zen Mod]

Originally Posted by wensan

I wonder this one will be better or not ?

interesting ; I admire lateral thinking

but - I'm not sure in amount of benefit

[bobodioulasso]

Wensan,
why not to keep the 2 ways NFB?
I have been thinking since the beginning that was an interesting particularity of the F5.