Precisa 490 Series - Page 53

Precisa Gravimetrics AG Index c2 A47
Series 490
350-8508
8 8
7 7
6 6
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
35072433a.SCH 16-06-99
VCC
VCC VCC
VDC
GND GND GND
GND GND GND GND GND GND
GND GND GND
GND GND
GND GND GND
GND GND GND GND
GND
GNDGND
VDC
GND GND GND
GND
VCC
+15V -15V
VCC GND GND
U7 LM7805
1
2
3
C19 100nF
C7 100nF
U5 LM7815
1
2
3
U4 LM7915
3
1
2
C20 100nF
C13 100nF
L3 500uH
C12 100nF
C14 100nF
U12 LM3524
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
R34
10k
R33 10k
R35 2k2
C30
10uF
C29
10nF
D14
1N4448
R41
100k
R42 100k R38 4k7 R39
1k
R40 240R
D13
1N4448
C31 1nF
D15
1N5819
Q9 BD137
R36
2k2
R37
15k
C35
220uF
C34
220uF
C32
220uF
C33
220uF
C36 220uF
C38
220uF
Q6 BC337
D16
1N5819
D17
1N5819