Need schematic for EL84 PSE

Yarpen · 4th December 2006, 06:10 PM

Hello

I need schematic for EL84 PSE and E88CC (6922) as input

Thanks

Yarpen

Sheldon · 4th December 2006, 07:46 PM

This one should be easy to adapt: http://www.tubeaudio.8m.com/RH84/rh84.html

Gain will be lower. Should be ok if you have a pre-amp with some gain.

Sheldon

Zibi · 4th December 2006, 08:15 PM

http://www.diyparadiso.com/piccolo4.htm

Yarpen · 4th December 2006, 08:38 PM

Thanks!

Zibi- dzieki!

diegot · 4th December 2006, 08:47 PM

http://www.bonavolta.ch/hobby/en/audio/el84.htm

thelegr · 21st December 2010, 07:05 PM

Hello guys!

I need a schematic for 4x el84 in PSE Mode this one but i can't understand some things like 10 (ohm)/2A ressistors at HV PSU (Maybe he mean 2W) and why there is higher voltage in screens than in plates so i decided not to use it.
have you any ideas for any schematic?

PS.* Sorry for my english

thelegr · 26th December 2010, 12:28 PM

Quote:

Originally Posted by thelegr

Hello guys!

I need a schematic for 4x el84 in PSE Mode this one but i can't understand some things like 10 (ohm)/2A ressistors at HV PSU (Maybe he mean 2W) and why there is higher voltage in screens than in plates so i decided not to use it.
have you any ideas for any schematic?

PS.* Sorry for my english

Nothing?????

artosalo · 26th December 2010, 12:57 PM

Quote:

why there is higher voltage in screens

Both, anode supply voltage and screen voltage come from same point at the power supply, so the anode voltage is slightly less due to OPT DC-resistance. This is typical arrangemet. You can use it with no concern.

I quess those 10 / 2A means 10 ohms and 2 watts. Anyhow, these resistors are not critical at all.

One comment concerning the power supply.
It is not necessary to use DC heater voltage for EL84s.
Use DC for ECC83 only. This makes the power supply simpler.

One question: Why 4 x EL84 as SE connected ?

4th December 2006, 06:10 PM	#1
Yarpen diyAudio Member Join Date: Sep 2004 Location: Poland	Need schematic for EL84 PSE Hello I need schematic for EL84 PSE and E88CC (6922) as input Thanks Yarpen

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4th December 2006, 07:46 PM	#2
Sheldon diyAudio Member Join Date: Dec 2003 Location: San Diego	This one should be easy to adapt: http://www.tubeaudio.8m.com/RH84/rh84.html Gain will be lower. Should be ok if you have a pre-amp with some gain. Sheldon

4th December 2006, 08:15 PM	#3
Zibi diyAudio Member Join Date: Jan 2006 Location: Bialystok	http://www.diyparadiso.com/piccolo4.htm

4th December 2006, 08:38 PM	#4
Yarpen diyAudio Member Join Date: Sep 2004 Location: Poland	Thanks! Zibi- dzieki!

4th December 2006, 08:47 PM	#5
diegot diyAudio Member Join Date: Sep 2004 Location: Brazil	http://www.bonavolta.ch/hobby/en/audio/el84.htm

21st December 2010, 07:05 PM	#6
thelegr diyAudio Member Join Date: Nov 2009	Hello guys! I need a schematic for 4x el84 in PSE Mode this one but i can't understand some things like 10 (ohm)/2A ressistors at HV PSU (Maybe he mean 2W) and why there is higher voltage in screens than in plates so i decided not to use it. have you any ideas for any schematic? PS.* Sorry for my english

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