EMI TG mic preamp schematic

[Strawtles]

Thank you

 

[Tekay]

Here's a drawing of  the input attenuator together with the Sowter replacement input transformer.

 

[Strawtles]

Thank you Tekay

 

[Gearsix]

I know it is an old post, but someone has realized this mic preamp ?
Has anyone found the original  EMI TG mic preamp schematic?

 

[abbey road d enfer]

What could be the idea behind the transistor in the 'voltage dropper' section of GroupDIY TG2.png?

Shunt regulation has its merits, like heating the mixer for cold mornings... 

 

[abbey road d enfer]

I love LTspice. It is free, runs spice models from just about anywhere and is easy to work with. However, you need a CP to run it on and I don't always have one to hand.

CP??

 

[PRR]

> CP??

Perhaps lexdysic fingers typing "PC".

 

[abbey road d enfer]

> CP??

Perhaps lexdysic fingers typing "PC".

Maybe, but it was in the same post as "I just tried it on PartSim the online simulator. " It seemed to indicate that PartSim had an edge there. Obviously, an online sim also needs a PC.
Well, probably a misunderstanding due to edit collision.

 

[ruffrecords]

Maybe, but it was in the same post as "I just tried it on PartSim the online simulator. " It seemed to indicate that PartSim had an edge there. Obviously, an online sim also needs a PC.
Well, probably a misunderstanding due to edit collision.

I think I meant PC ( meaning one that can execute LTspice). An on line simulator can be any browser so it could run on a Chrome book, or tablet for example which cannot execute LTspice.

Cheers

Ian

 

[abbey road d enfer]

I think I meant PC ( meaning one that can execute LTspice). An on line simulator can be any browser so it could run on a Chrome book, or tablet for example which cannot execute LTspice.

Cheers

Ian

All right! Thanks for the explanation.

 

[Gearsix]

no new about this circuit?