April 7, 200818 yr comment_111409 I have 6 pcs 6088 tube, with this spec : I want to build tube Amps with 2x9v battery. Anyone has headphone amps schematic with this tube Report
April 7, 200818 yr comment_111413 I doubt one exists. How are you going to supply the 1.5 volt filament supply with 2 x 9 volts? This tube is a pentode .... what are you going to use for an output transformer? Report
April 7, 200818 yr Author comment_111419 I doubt one exists. How are you going to supply the 1.5 volt filament supply with 2 x 9 volts? This tube is a pentode .... what are you going to use for an output transformer? Using 7805 dan resistor.. or maybe Using Battery 1.5v I found Phono Amps schematic using 6088 http://members.aol.com/sbench/6088pre3.html I found Pre-amp Schematic using 534AX Pentode http://www.dogstar.dantimax.dk/tubestuf/gallery4.htm Can I build like soha / yaha using op-amp ? Report
April 7, 200818 yr comment_111425 The completely backwards approach. I have something and want to use it. Pencil tubes not really suited for this. Send the tubes off to pete millet and he can put them in his whacky portable for you. Not going to be cheap. You are going to need the switchers he uses to raise the B+ to something like 48 volts. Then use the solid state buffers to drive the headphones. 48 volts and 1.5 volts both come off the switcher. Report
April 7, 200818 yr Author comment_111466 The completely backwards approach. I have something and want to use it. Pencil tubes not really suited for this. Send the tubes off to pete millet and he can put them in his whacky portable for you. Not going to be cheap. You are going to need the switchers he uses to raise the B+ to something like 48 volts. Then use the solid state buffers to drive the headphones. 48 volts and 1.5 volts both come off the switcher. do you mean using this one... Report
April 7, 200818 yr comment_111494 not quite but close. pete used an off the shelf switching transformer with 2 secondaries. one was used for the filaments. Report
April 8, 200818 yr Author comment_111617 not quite but close. pete used an off the shelf switching transformer with 2 secondaries. one was used for the filaments. Ok. it's not easy to get switching transformer here.. if only use those schematic for plate voltage and 2x batery 9v plus 1x 1.5v batery, this one will work ? Report
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