IC 1
XR2206
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC
NC
F (output)
O
N
S2 TRI/SINE WAVE
R8 (300 ohms)
R10 (1k POT)
I (Sweep Input)
J
R3
(1k
)
R4 (9.1
k)
H
(S1)
1
2
3
4
D
E
F
G
C3 (1uF)
C4 (0.1uF)
C5 (0.01uF)
C6 (0.001uF)
M SYNC OUTPUT
(FULL SWING)
L SYNC OUTPUT
(HALF-SWING)
R5 (5.1k)
R6 (5
.1k)
C (V+)
B (GRND)
A (V-)
C
1
(1
0uF
@ 50V
)
C
2 (
1
0u
F
@
50
V
)
+
+
-
-
R9
(1M
P
O
T)
R2 (100k)
R
DC OFFSET
Q (AM INPUT)
R
1 (
30k)
R11 (25k POT)
R7 (1k)
K (V-)
C7 (10uF @ 50V)
+
-
R13 (1M)
FREQUENCY
FREQUENCY RANGE
Schematic Diagram with External Rotary
Switch (S1) for Frequency Range Selection,
SPDT switch (S2) for TRI/SINE Wave
selection, and 1M ohm Potentiometer (R13)
for FREQUENCY. Not Shown is 50k
potentiometer (R12) for AMP ADJUST –
connection of pot to PCB depends on single
supply operation (see figure 3) or split
supply (see figure 4)
SCHEMATIC
