CA3140, CA3140A
500kΩ
FREQUENCY
ADJUSTMENT
10kΩ
SWEEP IN
FREQUENCY
CALIBRATION
MAXIMUM
620kΩ
51kΩ
7
3+
3MΩ
CA3140
2-
4
6
4.7kΩ
TO CA3080A
OF FUNCTION CA3080A
GENERATOR
(FIGURE 10)
4
5
2kΩ
0.1µF
+15V
12kΩ
FREQUENCY 2.4kΩ
CALIBRATION
MINIMUM 2.5
kΩ
METER
SENSITIVITY
ADJUSTMENT
11
620Ω
1kΩ
M
200µA
METER
510Ω
9
510Ω
8
10 14
2kΩ
6
METER
7 POSITION
ADJUSTMENT
12
3.6kΩ 13
3/5 OF CA3086
-15V
FIGURE 11. METER DRIVER AND BUFFER AMPLIFIER
+15V
-15V
5.1kΩ
+15V
100 1MΩ
kΩ
9.1kΩ
-15V
R1
10kΩ
0.1µF
3+
7
5.6kΩ
7.5kΩ
CA3140 6
2-
TO
4 SUBSTRATE WIDEBAND
OF CA3019 OUTPUT
0.1µF
7
AMPLIFIER
-15V
10kΩ
R3 10kΩ
EXTERNAL
OUTPUT
D1
D4
65 82
D3 D6 D2
9
1
3
4
CA3019 D5
DIODE ARRAY
430Ω
R2
1kΩ
FIGURE 12. SINE WAVE SHAPER
750kΩ
“LOG”
SAWTOOTH 18MΩ
100kΩ
1N914
1MΩ
22MΩ
100kΩ
FINE
RATE
1N914
0.47µF
0.047µF
4700pF
SAWTOOTH 8.2kΩ
SYMMETRY
COARSE
RATE
+15V
SAWTOOTH AND
RAMP LOW LEVEL
SET (-14.5V)
50kΩ
470pF
2
3
+15V
0.1
-
7
µF
CA3140 6
+4
0.1
µF
-15V
43kΩ
SAWTOOTH
75kΩ
51kΩ
50kΩ
LOG
RATE
ADJUST
“LOG”+15V
+15V
TRIANGLE
36kΩ
3- 7
100kΩ
30kΩ
TO OUTPUT 2
AMPLIFIER
CA3140 6
+4
-15V
10kΩ
EXTERNAL OUTPUT
10kΩ
10kΩ
TO FUNCTION GENERATOR “SWEEP IN”
SWEEP WIDTH
-15V
7
3+
+15V
CA3140 6
2-
4
LOGVIO
5
1
25kΩ
3.9Ω
100Ω
-15V
390Ω
51kΩ
6.8kΩ 91kΩ
10kΩ
5
4
1
TRANSISTORS
2
FROM CA3086
ARRAY
3
TRIANGLE
SAWTOOTH
“LOG”
GATE
PULSE
OUTPUT
FIGURE 13. SWEEPING GENERATOR
11