Valve Tester MAIN Veroboard Layout
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Transcript of Valve Tester MAIN Veroboard Layout
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H T Supply Rectification & Pre-regulation Board
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FS2 250 mA
Anode & Screen Current Limiters Board
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oR31R30
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TR9
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-C11
Audio Oscillator
Bias Supply Board
Leakage Detector
R32
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RL 1A
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C10
D11
D10
D8 D9
R26
R25
R24
D7 R
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R21
TR7BC307
R22
R14
R15
R18
D6
+
R20
R17
R16
bec
R19 ZD10
+
C7
C8+
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C9+
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C4
C5
C6
R27
C3+
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w yx
Grid VControl
VR3
LeakageB3
VR1
VR2
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-C 1
D 1
D 2
D5
D3
D4
R2
+
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ebc
ZD1 ZD2
ZD4ZD5ZD6
ZD3ZD3
ZD7
be c
c be
TR8MJE 350
TR1MPSA92
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S
ebc
R5
R6
ZD9
ZD8
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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
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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
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-C13
D2AD
1A
R11
C12
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B2
B4