Look for EL33 PP structure circuit

[RCA245]

Can everybody help to offer?

Thanks

 

[planet10]

one of my favorites from Vaccuum State Electronics

An externally hosted image should be here but it was not working when we last tested it.

dave

 

[planet10]

and the power supply

An externally hosted image should be here but it was not working when we last tested it.

 

[leadbelly]

one of my favorites from Vaccuum State Electronics

dave

No, that's not a typo, he really means EL33:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=55148

 

[planet10]

he really means EL33

Oops... not a tube i've heard of before... same circuit would work, but with adjustment of cathode R & an OPT with a lot more pimary -- looks much more like an EL84 then an EL34.... i'm using the above as a basis for a PP amp with EL84s leveraged off a pair of Dynaco SCA35s

An externally hosted image should be here but it was not working when we last tested it.

dave

 

[planet10]

To continue... go looking for circuits for EL84/6BQ5, 6AQ5, 6V6, EL95, ELL80, adjust the cathode circuit and power supply as necessary....

dave

 

[RCA245]

http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Thank you very much for the help of dave and leadbelly.

http://artifactaudio.com/EL33specs.JPG
Ask dave again. Please tell me?
In the webpage "Two valves in Push-Pull".
Va=250V
Vg2=250V
Rk=140 ohm
Vin=13V

I can change the circuit of this 6V6 below its Va , Vg2, Rk and Vin, make it become circuit of EL33 PP?

http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Make having 296V in the picture into 250V,
Rk =250 ohm is changed into 140 ohm,
Make with 18V into 13V.
Can become EL33 PP in this way?

Thanks.

 

[planet10]

Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

I can change the circuit of this 6V6 below its Va , Vg2, Rk and Vin, make it become circuit of EL33 PP?

http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Make having 296V in the picture into 250V,
Rk =250 ohm is changed into 140 ohm,
Make with 18V into 13V.
Can become EL33 PP in this way?

An externally hosted image should be here but it was not working when we last tested it.

pretty much... i'd put a CCS on the cathodes of the long tail pair and just use it as the phase splitter and gain stage (you might need a higher gain tube) -- this would eliminate the 1st 2 stages.

dave

 

[RCA245]

Re: Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

pretty much... i'd put a CCS on the cathodes of the long tail pair and just use it as the phase splitter and gain stage (you might need a higher gain tube) -- this would eliminate the 1st 2 stages.

dave [/B]

Dave, thanks your replying.
Sorry ! What is CCS?


If use this circuit below, OK?
http://www.tubecity.com.tw/images/cir3.gif

Or change the 1st 2 stages (first 6sn7) into EF86 etc . high gain tube?

But change into high gain tube, so become bad linearly?

Thanks.

 

[planet10]

Re: Re: Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Sorry ! What is CCS?

Constant Current Source

If use this circuit below, OK?
http://www.tubecity.com.tw/images/cir3.gif

That is the same circuit, different ouput tubes and details ...

Or change the 1st 2 stages (first 6sn7) into EF86 etc . high gain tube?

EF86 straffed in triode is excellent.

something like this is what i suggest (note similarities to PP1C above)

dave

 

[Yvesm]

Really looks like ...

Hey guys !

Did you notice how the data for the 6M6 is close to the one for the penthode section of a 6GW8

Add an half 12AX7 and look at :

http://www.diyaudio.com/forums/showthread.php?s=&threadid=53969

Yves

 

[planet10]

Gee, you beat me to that....

dave

 

[RCA245]

Re: Re: Re: Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Constant Current Source



That is the same circuit, different ouput tubes and details ...



EF86 straffed in triode is excellent.

something like this is what i suggest (note similarities to PP1C above)

dave

Hi Dave.
http://www.diyaudio.com/forums/attachment.php?s=&postid=619316&stamp=1113444357

Only is it all right to need two stage? ?
Could you tell me that needs one stage foremost?

Thanks

 

[planet10]

Re: Re: Re: Re: Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html

Only is it all right to need two stage? ?

If all you need is an amp, 2 stages work fine (input/phase splitter + output stage)

dave

 

[RCA245]

Re: Really looks like ...

Hey guys !

Did you notice how the data for the 6M6 is close to the one for the penthode section of a 6GW8

Add an half 12AX7 and look at :

http://www.diyaudio.com/forums/showthread.php?s=&threadid=53969

Yves

Hi Yvesm .
Thank very much the suggestion that you offer .