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Post subject: Re: Tube amp operation
Posted: Sat May 03, 2014 10:40 pm
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mhowell wrote:
Retroverbial wrote:
socal323 wrote:
It was also great to know why the signals had to be split into an inverted and non inverted copy when using two output tubes. Is this why it's commonly referred to as a a push/pull circuit?


Correct.

In a single-ended amp there is no phase inverter and the power tube assumes a 100% duty cycle, direct-coupled to the gain stage(s) of the pre-amp.

Arjay

I'm sure what you meant to say is the gain stage directly follows the pre-amp. Sometimes the term "direct-coupled" is used in place of DC coupled. I don't know if I've ever seen a guitar amp with DC coupled stages.

DC Coupling


You have now. :wink:

DC coupled cathode follower in the Fender 5F6A Bassman:

Image

http://ampbooks.com/home/classic-circui ... ltage-amp/

http://www.valvewizard.co.uk/dccf.html

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Post subject: Re: Tube amp operation
Posted: Sun May 04, 2014 4:05 am
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Location: Indiana
DC coupled?

That's like RV vehicle. :lol: :lol:

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Post subject: Re: Tube amp operation
Posted: Tue May 06, 2014 2:27 am
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bluesky636 wrote:
mhowell wrote:
Retroverbial wrote:

Correct.

In a single-ended amp there is no phase inverter and the power tube assumes a 100% duty cycle, direct-coupled to the gain stage(s) of the pre-amp.

Arjay

I'm sure what you meant to say is the gain stage directly follows the pre-amp. Sometimes the term "direct-coupled" is used in place of DC coupled. I don't know if I've ever seen a guitar amp with DC coupled stages.

DC Coupling


You have now. :wink:

DC coupled cathode follower in the Fender 5F6A Bassman:

Image

http://ampbooks.com/home/classic-circui ... ltage-amp/

http://www.valvewizard.co.uk/dccf.html


Obviously my knowledge is far from comprehensive.

Cheers,

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