SCHEMAT(1).PDF

(20 KB) Pobierz
Shown below is the latest update for the N-channel amplifier
Date April 14 2001
Shown below is the latest update for the N-channel Amplifier.
A number of people who have built this amplifier have had trouble
thermally stabilizing the o/p stage.
So I have gone back to the drawing board and redesigned the biasing
network and output stage.
I have added 0.33 Ohm degenerative resistors, reduced the power
dissipation in the voltage regulator by changing ZD4 from 15v Zener to
9.1volts, replaced the MJE340 VBE multiplier with IRF610 and changed
the P1, R21 and R35 values from 20k to 2k, 1k to 1120 Ohms and 120
Ohms to 22 Ohms respectively….
These modifications have produced a very thermally stable and easily
adjustable biasing stage.
For others of you that will be building this amplifier these modifications
are strongly recommended.
Warm regards
Anthony E Holton
1
2
3
4
5
6
7
8
D
D
E2
100uf 50v
Q1
2SA970
R1
100
ZD4
9.1v
R26
22k
IC1
L M 317K
R2
100
Q11
2SC3298
C5
470pf
3
+Vout
Vin
2
R15
10k
R16
10k
R6
100
R19
330
Q4
2SA970
6 Milliamp
P1
2k
E5
100uf 25v
E6
10uf 25v
Q12
IRF610
R4
100
R5
100
C
C
Q3
2SA970
Q2
2SA970
R35
22 Ohms
R21
1120 Ohms
C3
2.2uf MKP
R22
1k
R24
22k
R25
22k
R27
470
F2
5 AMP
C4
1nf
+70V
C6
100nf MKT
E3
100UF 160V
Q10
IRFP240
Q8
IRFP240
Q5
IRFP240
C9
100nf MKT
E7
100uf 100v
E1
470uf
C1
470nf
R18
330
R12
470
R11
470
R8
470
R28
10 Ohm
ZD2
9.1v 1watt
R32
0.33 Ohm
R33
0.33 Ohm
R34
0.33 Ohm
Q13
IRF610
B
R3
100
B
R20
330
Q15
BC546B
Q14
BC546B
R29
0.33 Ohm
R30
0.33 Ohm
R31
0.33 Ohm
ZD3
9.1v 1watt
optional component
R17
330
ZD1
9.1v 1watt
R14
470
R13
470
R7
470
R10
470
R9
470
Q9
IRFP240
Q7
IRFP240
Q6
IRFP240
F1
5 AMP
-70V
C7
100nf MKT
E4
100UF 160V
C8
100nf MKT
E8
100uf 100v
Anthony.E.Holton
A
Copyright 1995-2001
A
Revision Date 31 March 2001
Title
Size
A3
Date:
Number
Revision
3-Apr-2001
Sheet of
File:
E:\Client98\N-CHNAMP.SCH
Drawn By:
1
2
3
4
5
6
7
8
23283950.031.png 23283950.032.png 23283950.033.png 23283950.034.png 23283950.001.png 23283950.002.png 23283950.003.png 23283950.004.png 23283950.005.png 23283950.006.png 23283950.007.png 23283950.008.png 23283950.009.png 23283950.010.png 23283950.011.png 23283950.012.png 23283950.013.png 23283950.014.png 23283950.015.png 23283950.016.png 23283950.017.png 23283950.018.png 23283950.019.png 23283950.020.png 23283950.021.png 23283950.022.png 23283950.023.png 23283950.024.png 23283950.025.png 23283950.026.png 23283950.027.png 23283950.028.png 23283950.029.png 23283950.030.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin