4/6/2024 0 Comments Tube amplifier circuitA Russian manufacturer named Sovtek makes these tubes new, so you need not rely on “New-Old-Stock” (NOS) components left over from defunct American manufacturers. Go to any good music store and you will find them available for a modest price ($12 US or less). Where can you obtain a 12AX7 tube, you ask? These tubes are very popular for use in the “preamplifier” stages of many professional electric guitar amplifiers. Radio, tape player, musical keyboard, or other sources of audio voltage signal.One toggle switch, SPST (“Single-Pole, Single-Throw”).“Low-voltage AC power supply” as shown in AC Experiments chapter.One 0.1 ♟ capacitor, 250 WVDC (Radio Shack catalog # 272-1053).Electrolytic capacitor, at least 47 ♟, with a working voltage of at least 200 volts DC.Bridge rectifier module (Radio Shack catalog # 276-1173).
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