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ELEX K2 (Hohner Stringvox) (r3) M174 Modulation Oscillator Board: Drawing
D1
D1
VR1
VR1
C1
C1
C2
C2
R1 R2 R3
R1 R2 R3
A
C3
C3
B
Components (B) side with traces, shown transparent to A side traces.
Component numbering is added arbitrarily in the absence of original documentation, except ICs which are as on the board.
D3
D3
VR2
VR2
D4
D4
D2
D2
C4
C4
C5
C5
1C1
1C1
R5
R5
R6 R7
R6 R7
R8
R8
R4
R4
+13 –13
R12
R12
R13
R13
C7
C7
+
R14
R14
R15
R15
1C2
1C2
R9 R10
R9 R10
R11
R11
C6
C6
modulation outputs
designed c.1979 ELEX S.p.A. (Excelsior) | drawing 2024 electropict
R23
R23
R16
R16
R17
R17
R24
R24
R26R27
R26R27
R21
R21
1C3
1C3
R18
R18
R25
R25
C8
C8
C10
C10
R20
R20
C9
C9
C11
C11
R19
R19
R22
R22
R28
R28
R30
R30
1C4
1C4
R29
R29
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