HEIDENHAIN TNC151B Service Instructions Manual page 68

-w4.3v
0*&S v-
71
64
I I -
Softstart
Circuit
- Mains
65 63:35-+L
1
"N
- Rectifier
- Transformer
Voltage
Protection
I
"1
I-
/ "Ref 1
Fly Back Regulator
- -I"2
I
Power
I
Forward Converter 70
Switch 1
0*5 v
/
I
(with Low Pass Filter)
I
f
RS-232-C
OP-NW
t4OS-LogM
OP-At4P
RS-232-C
TTL- Logic
----
----
------- ----_
1
I
Power I
Forward Converter7aJ Yu3
Switch 1
0, 11 v
I
(with Low Pass Filter)
I
I
VOU
70.3-l
Switching
Regulator -
(TL 4941
I
I
I
L-
only with TNC1511
------ ----- -------
a Rcsct lt=160-160mrl
Drawing No.:
'4820 EKD 1602000