Try a 6BM8/ECL82 SE (single ended)
2 valves, a few components, and 2 watts of raw creamy power.
Loads of schematics available- I built the Mullard circuit and found it very nice sounding.
http://www.bonavolta.ch/hobby/en/audio/ecl82_1.htm
2 valves, a few components, and 2 watts of raw creamy power.
Loads of schematics available- I built the Mullard circuit and found it very nice sounding.
http://www.bonavolta.ch/hobby/en/audio/ecl82_1.htm
SHiFTY,
That Mullard designed SE 6BM8/ECL82 circuit is interesting. When reverse connected, the requisite 80 mA. RMS is available, at approx. 230 VAC, from the 2X 10 VA Talema trafos Andrea already has. SS rectification should bring the B+ rail in at just about the proper value.
Connect the 6BM8 heaters in series, add a 2 W./ 1.5 Ohm resistor to each end of the heater string, and a 2.5 A./15 VAC "wall wart" drives the whole "shebang". I don't know if such a "wall wart" can be had, "off the shelf". In any event, a 50 VA Amveco toroid trafo can be used to fabricate the "wall wart".
While some changes, including elimination of controls, are needed to Mullard's design, it seems the office ipod amp project might take flight.
That Mullard designed SE 6BM8/ECL82 circuit is interesting. When reverse connected, the requisite 80 mA. RMS is available, at approx. 230 VAC, from the 2X 10 VA Talema trafos Andrea already has. SS rectification should bring the B+ rail in at just about the proper value.
Connect the 6BM8 heaters in series, add a 2 W./ 1.5 Ohm resistor to each end of the heater string, and a 2.5 A./15 VAC "wall wart" drives the whole "shebang". I don't know if such a "wall wart" can be had, "off the shelf". In any event, a 50 VA Amveco toroid trafo can be used to fabricate the "wall wart".
While some changes, including elimination of controls, are needed to Mullard's design, it seems the office ipod amp project might take flight.
, is there anybody that could remake the schematic with the suggestion of Eli 
Here I'm!
Sorry for the delay but I'm full immersion with work and I couldn't do my hobby
I make the schematic and PCB with Eagle... I don't like PCB too much because there are a lot of vias but this is the best I can make
Could someone check the schematic and pcb and told me if there are any errors or some modification to do?
Thanks.
Andrea
Sorry for the delay but I'm full immersion with work and I couldn't do my hobby
I make the schematic and PCB with Eagle... I don't like PCB too much because there are a lot of vias but this is the best I can make
Could someone check the schematic and pcb and told me if there are any errors or some modification to do?
Thanks.
Andrea
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