My new baby :)
I used some parts recovered from old radios, but NOS tubes.
The two audio output transformers are from an old Grundig stereo radio (10K single ended for EL95/ELL80), the same for filter choke and the vertical 100+50+50 uF triple electrolitic filter capacitor.
The magic eye is an EM87 and the full wave rectifier is an AZ41 high vacuum tube (schematic not shown).
Pout = 2 x 0.25 W max (triode connection)
Vcc = 180 Vcc - 60 mA (two mono units, without full bridge rectifier AZ41 and magic eye EM87)
Vf = 6.3 Vac - 1.5 A (two mono units, without full bridge rectifier AZ41 and magic eye EM87)
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![Click the image to open in full size.]()
![Click the image to open in full size.]()
I used some parts recovered from old radios, but NOS tubes.
The two audio output transformers are from an old Grundig stereo radio (10K single ended for EL95/ELL80), the same for filter choke and the vertical 100+50+50 uF triple electrolitic filter capacitor.
The magic eye is an EM87 and the full wave rectifier is an AZ41 high vacuum tube (schematic not shown).
Pout = 2 x 0.25 W max (triode connection)
Vcc = 180 Vcc - 60 mA (two mono units, without full bridge rectifier AZ41 and magic eye EM87)
Vf = 6.3 Vac - 1.5 A (two mono units, without full bridge rectifier AZ41 and magic eye EM87)
