Current mirror for the aleph?

[3nity]

Hi,

Is it possible to have a current mirror to feed the output stage in the aleph 3? Any benefit?

 

[h_a]

What do you want to use the current mirror for? To what purpose? The Aleph-current source can be seen as a single transistor gain stage with a single transistor current source - it's just the real world that needs some paralleled fets in this position.

Have fun, Hannes

 

[3nity]

Sure.
In the input stage, maybe?

 

[Nelson Pass]

Perhaps you would like to post a picture of what you have in mind
for greater clarity. There are a couple of ways to interpret "current
mirror"

 

[3nity]

I had this...

Any opinion/suggestion welcome.

 

[stoN_Cold]

Hi!

Single supply?????

Regards zeoN_Rider

 

[Zen Mod]

Re: Hi!

Single supply?????

Regards zeoN_Rider

look again

 

[Nelson Pass]

Any opinion/suggestion welcome.

This is unlike current mirrors with which I am familiar.

 

[h_a]

Maybe you want to rework your drawing a bit, at the moment it looks more like a signal modulated cascode

May I ask you what your idea behind using a current mirror is? More gain and more feedback? Or just playing around a bit?

Have fun, Hannes

 

[3nity]

Just playing around.

originally posted by h_a
Maybe you want to rework your drawing a bit, at the moment it looks more like a signal modulated cascode

You mean by having emitters and collectors reversed, right?

originally posted by Nelson PassThis is unlike current mirrors with which I am familiar.

Is it not the same fashion as the output stage (the sources feeding the drains) ?

 

[h_a]

Hi,

You mean by having emitters and collectors reversed, right?

Yup, and you maybe want also to think a bit about what a current mirror is and does...it's an active load. But you have already a load resistor drawn...

<the sources feeding the drains>

Reading the Aleph-owner's manual will help you understand the amp better

Have fun, Hannes

 

[dungdochi1978]

everything you can do