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Tubes Preamplifiers
SPICE projects of Tubes Preamplifiers, Headphone Tubes Preamplifiers, Phono Tubes Preamplifiers, Splitters, Study of single Valve Characteristic curves, etc
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Ultralinear Line Stage Amplifier
Created by TopSpiceDesigner, published on 13-04-2012
this line stage amplifier uses a 6BM8P pentode to the first stage and two 6SN7 triodes.It has 7.2 DB of gain and a low distortion for a tube amp.
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Intermediate TopSpice 8.18+ No 11-20 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Ultra-linear Cascode two Tubes amplifier
Created by MicroCapDesigner, published on 02-08-2011
Two 6DJ8 triodes implements an ultra-linear pentode.Like the pentode it has a low input impedance and distortion.Another advantage is the increased maximum output swing.
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Intermediate Micro-Cap 10+ No 11-20 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Phono Preamplifier with RIAA Concentrated Equalization Filter
Created by Cribald, published on 30-07-2011
Two 12AU7 tubes preamplifier with a concentrated RIAA filter for the equalization of a recording RIAA curve.
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Intermediate PSpice 9.2+ No 21-30 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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RIAA Tubes Preamplifier
Created by AltiumDesigner, published on 17-07-2011
Three 12AX7 tubes RIAA (Recording Institute Association of America) preamplifier
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Intermediate Altium Designer summer09+ Yes 21-30 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Ia - Va Characteristic Curves for different biasing modes of a Pentode tube
Created by Cribald, published on 22-06-2011
Three different ways to bias a pentode 6550, Standard or Pentode mode, triode mode, Ultralinear mode, and plotting of its characteristic curves.
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Simple PSpice 9.2+ No <10 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Two Stages Triode Preamplifier
Created by Cribald, published on 15-06-2011
Two stage preamp with valves 6N1P.Effect of Miller Capacitance and solution to reduce the output resistance of first stage.How choose an optimal working point for triode from datasheet parameters.Estimation from anodics curves of gain and internal resistance ra of triode.
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Intermediate PSpice 9.2+ No 11-20 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Cascode Triodes Configuration
Created by Cribald, published on 26-05-2011
This typical configuration of cascode triodes implements a sort of "pentode", with the benefit of an high gain and without the drawbacks of this tube.Ia-Va study of characteristic curves of triode 6DJ8.
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Intermediate PSpice 9.2+ No 21-30 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Concertina Phase Splitter with a 6SN7 tube
Created by Cribald, published on 25-05-2011
Concertina phase splitter and an advanced version of concertina phase splitter with an higher input impedance, Ia-Va study of 6SN7 tube and method to find an optimal working point.The concertina splits the single signal from the preamplifier into two opposite polarity signals.It's used as the second stage in a Push Pull amplifier
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Intermediate PSpice 9.2+ No 21-30 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Triode as Amplifier
Created by Cribald, published on 05-05-2011
Triode as amplifier, Rout calculation, negative biasing of the grid
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Simple PSpice 9.1+ No <10 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
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Pentode as Amplifier
Created by Cribald, published on 04-05-2011
a Tube EF86 a preamplifier stage, Ia-Va characteristic curves in Triode mode and in Pentode mode
Project Type: Share
Complexity Spice Software Software Version Full version Components number Documents Intermediate PSpice 9.2+ No 21-30 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Tubes Preamplifiers
