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2x30W EL34 tube amplifier simulation

6 years ago 7685
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Description

A copy of the 2x30W EL34 tube amplifier:

https://easyeda.com/project_view_2x30W-EL34-tube-amplifier_Fjd7pjBTa.htm

but redrawn using EasyEDA valve symbols with simulation models and the output transformer modelled so that the whole amplifier (excluding the PSU) can be simulated.

The transformer model is the subcircuit that is used for the transformer symbol in the amplifier simulation.

To learn how to find and use the symbols used in this simulation and for a list of available spice models, please see:

https://easyeda.com/andyfierman/Valve_Tube_examples-05ZhzR9rJ

More on valve / tube modelling:

SPICE Models for Vacuum Tube Amplifiers

Documents

2x30W EL34 tube amplifier simulation schematic

V78A01F transformer development

BOM

ID Name Designator Quantity
1 {Lsec8} L5 1
2 {Lsec4} L6,L7 2
3 {LN755} L1,L4 2
4 {LN245} L2,L3 2
5 {Rsec4} R7,R6 2
6 {Rsec8} R5 1
7 {RN755} R1,R4 2
8 {RN245} R2,R3 2
9 8 R8 1
10 SIN(0 1 1k) AC 1 0 V3,V4 2
11 1m RNETSEP1 1
12 470n C1,C2,C6,C9,C10,C3 6
13 47k R2,R7,R25 3
14 1k R3,R17,R18 3
15 1Meg R4,R12 2
16 150k R5,R8 2
17 390k R6,R20 2
18 390 R10 1
19 3.3k R11 1
20 15k R13 1
21 4.7k R14,R19,R1 3
22 10 R15,R16 2
23 560p C4 1
24 100 R21 1
25 47k R22 1
26 22k R23,R24 2
27 NHECC83_DMGTM U2,U3 2
28 82k R9 1
29 410 V6 1
30 -60 V7 1
31 450 V8 1
32 160 V1 1
33 SINE(0 100m 1k) AC 1 0 V2 1
34 EF86_DM U1 1
35 EL34_DM U5,U4 2
36 220n C7,C8 2
37 1u C5 1
38 V78A01F_EE T1 1
39 8 RSPKR1 1
40 {(100+3.3k)/100} V3 1

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