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Preamplifiers
SPICE projects of Preamplifier with Integrated Circuits, Tubes Preamplifier, Discrete Components Preamplifiers
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Stereo Headphone Amplifier with TPA6138A2
Created by TINADesigner, published on 21-08-2012
headphone amplifier, with a built in click and pop suppression circuit, and an adjustable gain set by external resistors.The gain ca be configured individually for each channel and ranges from +,- 1 to +,- 10. The device is ideal for single-supply electronics and allow the removal of the output dc-blocking capacitors for reduced component count and cost.
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Intermediate Tina 7+ Yes 21-30 Path: SPICE Projects > Audio Circuits > Preamplifiers > IC Preamplifers
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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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JFET and BJT Handsfree Preamplifier
Created by LTspiceDesigner, published on 17-02-2012
handsfree preamplifier, with the small signal N-channel JFET 2N5458, and a small signal PNP bjt 2N3906. 0.05% THD at 1KHz .4V p-p output
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Documents Simple LTspice IV No 11-20 1 Path: SPICE Projects > Audio Circuits > Preamplifiers > Discrete Preamplifier
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Two Stage BJT Microphone Preamplifier
Created by TINADesigner, published on 24-11-2011
microphone preamplifier with a couple of BC847, one layer board with SMT technology
FREE
(only to registered users)
Project Type: Free
Complexity Spice Software Software Version Full version Components number Simple Tina 1.61+ Yes 11-20 Path: SPICE Projects > Audio Circuits > Preamplifiers > Discrete Preamplifier
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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
