Valve Tester MAIN Veroboard Layout
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H T Supply Rectification & Pre-regulation Board a b c d e f g h i j k l m FS2 250 mA Anode & Screen Current Limiters Board a b c d e f g h i j k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 a b c d e f g h i j k l m n o R31 R30 b e c TR9 + - C11 Audio Oscillator Bias Supply Board Leakage Detector R32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 RL 1A - + C10 D11 D10 D8 D9 R26 R25 R24 D7 R23 R21 TR7 BC307 R22 R14 R15 R18 D6 + R20 R17 R16 b e c R19 ZD10 + C7 C8 + - C9 + - C4 C5 C6 R27 C3 + - w y x Grid V Control VR3 Leakage B3 VR1 VR2 + - C 1 D 1 D 2 D5 D3 D 4 R2 + - e b c ZD1 ZD2 ZD4 ZD5 ZD6 ZD3 ZD3 ZD7 b e c c b e TR8 MJE 350 TR1 MPSA92 G D S e b c R5 R6 ZD9 ZD8 G D S e b c R9 R10 ZD12 ZD11 TR4 BUZ80A TR5 MPSA42 TR5 MPSA42 R12 D16 Anode Supply & Current Meter - Current Meter + GM Meter - HT LED GM Meter + Current Control R1 C 2 grid feed 0v - R3 R4 Anode HT Selector in Screen HT Selector in R12 HT to current limit board 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 to HT supply board selector switches High voltage Ground 0v to selector switches 0v Ground & Cathode supply R11 TR2 BUZ80A R13 AC AC 35v AC AC 250 250 Leakage LED Screen Supply TR9 BC237 TR7 BC307 + - C 13 D2A D1A R11 C12 + - B2 B4
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Transcript of Valve Tester MAIN Veroboard Layout
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H T Supply Rectification & Pre-regulation Board
a
b
c
d
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m
FS2 250 mA
Anode & Screen Current Limiters Board
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d
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h
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
a
b
c
d
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f
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h
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j
k
l
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n
oR31R30
be c
TR9
+
-C11
Audio Oscillator
Bias Supply Board
Leakage Detector
R32
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
RL 1A
-
+
C10
D11
D10
D8 D9
R26
R25
R24
D7 R
23
R21
TR7BC307
R22
R14
R15
R18
D6
+
R20
R17
R16
bec
R19 ZD10
+
C7
C8+
-
C9+
-
C4
C5
C6
R27
C3+
-
w yx
Grid VControl
VR3
LeakageB3
VR1
VR2
+
-C 1
D 1
D 2
D5
D3
D4
R2
+
-
ebc
ZD1 ZD2
ZD4ZD5ZD6
ZD3ZD3
ZD7
be c
c be
TR8MJE 350
TR1MPSA92
G
D
S
ebc
R5
R6
ZD9
ZD8
G
D
Sebc
R9
R10
ZD12
ZD11
TR4BUZ80A
TR5MPSA42
TR5MPSA42
R12
D16
Anode Supply &Current Meter -
CurrentMeter +
GM Meter -
HT LED
GM Meter +
CurrentControl
R1
C 2
grid feed0v
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R3 R4
Anode HTSelector in
Screen HTSelector in
R12
HT to currentlimit board
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
to HT supply boardselector switches
High voltage
Ground 0vto selectorswitches
0v Ground &Cathode supply
R11
TR2BUZ80A
R13
AC
AC35v
AC
AC
250
250
LeakageLED
Screen Supply
TR9BC237
TR7BC307
+
-C13
D2AD
1A
R11
C12
+-
B2
B4
