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-   -   Look for EL33 PP structure circuit (http://www.diyaudio.com/forums/tubes-valves/55331-look-el33-pp-structure-circuit.html)

RCA245 13th April 2005 09:50 AM

Look for EL33 PP structure circuit
 
Can everybody help to offer? ;)

Thanks

planet10 13th April 2005 07:31 PM

one of my favorites from Vaccuum State Electronics

http://www.vacuumstate.com/schematics/pp-1c_s.gif

dave

planet10 13th April 2005 07:31 PM

and the power supply

http://www.vacuumstate.com/schematics/pp-1c_ps_s.gif

leadbelly 13th April 2005 07:35 PM

Quote:

Originally posted by planet10
one of my favorites from Vaccuum State Electronics

dave

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

http://www.diyaudio.com/forums/showt...threadid=55148

planet10 13th April 2005 07:40 PM

Quote:

Originally posted by leadbelly
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

http://www.mif.pg.gda.pl/homepages/f...001/e/EL33.gif

dave

planet10 13th April 2005 07:41 PM

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

dave

RCA245 13th April 2005 09:30 PM

http://www2u.biglobe.ne.jp/~tossie/6V6-E.html
 
Thank you very much for the help of dave and leadbelly. :D

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.:D

planet10 13th April 2005 09:41 PM

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

Originally posted by RCA245
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?

http://www2u.biglobe.ne.jp/~tossie/6V6PP.sch.gif

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 14th April 2005 12:16 AM

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

Originally posted by planet10

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? :dead:


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 14th April 2005 02:05 AM

Re: Re: Re: http://www2u.biglobe.ne.jp/~tossie/6V6-E.html
 
2 Attachment(s)
Quote:

Originally posted by RCA245

Sorry ! What is CCS? :dead:
Constant Current Source

Quote:

If use this circuit below, OK?
http://www.tubecity.com.tw/images/cir3.gif
That is the same circuit, different ouput tubes and details ...

Quote:

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


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