dytln_02 Posted April 7, 2008 Report Share Posted April 7, 2008 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 Quote Link to comment Share on other sites More sharing options...
Guest sacd lover Posted April 7, 2008 Report Share Posted April 7, 2008 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? Quote Link to comment Share on other sites More sharing options...
dytln_02 Posted April 7, 2008 Author Report Share Posted April 7, 2008 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 ? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted April 7, 2008 Report Share Posted April 7, 2008 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. Quote Link to comment Share on other sites More sharing options...
dytln_02 Posted April 7, 2008 Author Report Share Posted April 7, 2008 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... Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted April 7, 2008 Report Share Posted April 7, 2008 not quite but close. pete used an off the shelf switching transformer with 2 secondaries. one was used for the filaments. Quote Link to comment Share on other sites More sharing options...
dytln_02 Posted April 8, 2008 Author Report Share Posted April 8, 2008 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 ? Quote Link to comment Share on other sites More sharing options...
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