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aardvarkash10 8th January 2012 06:20 AM

just about to - thanks P10 and Mach1 for the math... Have all the bits and the family is away, weather is crap so onward...

the_manta 8th January 2012 09:44 AM

1 Attachment(s)
My first amplifier used E/PCL86. With proper OPTs it performs really well. Schematic was pretty standard but modified along the way numerous times. I think it is fixed bias now and has cathode + direct anode feedback or so. The correct value for the OPT is 7k for the 250V-36mA operating Point, not 5k !! I used Reinhöfer (Rö 53:00 type for this.
I hardly use the amp now because 4W is a not much Power. It's standing near my workbench in the cellar now and plays a little music/radio when I solder. EMM801 is switched off. It turns you crazy when you see this flickering from the corner of the eye ;)

romicap 15th October 2012 08:49 AM

yes, i`am built one!

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