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B+ R35 3 15.8K 2 R11 1.00K 3 I O 2 Q1 ADJ LM317L D7 ZMM12 R12 243 R40 2.00
+C4
-15 +15 C28 R34 13.7K 8 2 3 -3.8V 0.1 Z4A 4 1 TL072 R38 -15 3.74K 6
+
Q4 MPS-A42 1
R42
10.0K
R32
10.0K
R23 9.09K 1/2W C3 4004 OL2 10.0K S1A S1B 4 5 2P2P 6 +15 C18 R10 6.81K 1/2W C1 0.1 AGND 3 R7 20.0K C15 220PF 5% 2 Z1 8 5 1 AGND 2 3
+
R6 100 D1 1.0/50 AGND R31 D12 4148 10.0K 4148
OL1
R30
D11
SIG/OL
1
1 3
2
-15
1.0/50 AGND +15 R20 5.11K AGND D2 R PHANTOM AGND POWER R9 6.81K 1/2W C16 0.1 AGND 0.1 C17 L2
+
+
1 2 3 -15
C35 1.0/50
R39 5 100K -0.8V AGND AGND R41 1.00K AGND
Z4B
7 TL072
R33
D4 R/G
10.0K
C8 7 4 SSM2017P C37 6 1.0/50 1 R16 5.11K R17 5.11K +15 C20 C38 1.0/50 8 2 3 C36 R2 470/16 10.0 AGND 0.1 Z2A 4 1 MC33078 -15 R3 4.42K AGND B+ 22/16 R29 10.0K R25 6 4004 D5 4004
+
BEAD INPUT J3
2 3 1 + -
47/50 C7 220PF AGND
+
47PF R19 R18 5.11K 2 3 5.11K +15 C19 8 0.1 Z3A 4 1 MC33078 -15 C13
AGND L4 BEAD D13 SL4733 D15 SL4733 AGND AGND D16 SL4733 47/50 R1A 2KRD D14 SL4733 XLR F
C12 220PF C2
R8 20.0K
OL1 R24 100 R27 100 R28 10.0K C21 22/16 C14
INVERT NORMAL C10 220PF
.
OUTPUT
4 5 6
S2B
22/16 R36 20.0K
J1 XLR M
+ 2 - 3
4
1
AGND R37 C29 20.0K 100 R26 C6 220/63 Q2 LM317 3 I O 2 5 +15 D3 Y POWER AGND Z2B 7 MC33078 5 6 Z3B 7 MC33078 R15 100 22/16 C24 22/16
C5 220/63 L3 J2
CT AC AC +
D6
S2A 2P2P
1 2 3
D9 4004 C25 0.1 C31 0.1
CT
1 2 3 4 5 6
L1 3-T C26 0.1
3-T
OL2
ADJ
1
C22 470/35
+
C23 0.1
R21 301 R4 3.32K R5 3.32K C30 470/35 D10 4004
+ +
R14 5.11K C33 10/50V
+
R13 5.11K
5.11K C9 47PF C34 AGND 10/50V C27 0.1
2 1 ADJ 3 I O
RJ-12 LB1 L-BKT
R22 301 -15 Q3 LM337
ACTION: ADDED C31, UPDATED DIODES, CHANGED PIN #S FOR S1A & B CHANGED C1&2 TO 47/50 SMT WAS 102903, FJ 8JUL99 DRAWN BY: 27-Jul-1999
MS 1a
RJ
CHECKED BY:
H:\MS1A\103201.SCH
RJ
10802 47th Avenue West Mukilteo WA 98275-5098
SHEET:
1
of 1
103201
.
C11 220PF