![Harman Kardon FL 8385 Скачать руководство пользователя страница 19](http://html1.mh-extra.com/html/harman-kardon/fl-8385/fl-8385_service-manual_599390019.webp)
APC
The laser diode has large negative temperature characteristic in its optical output when
driven with a constant current on laser diode. Therefore, the output on processing monitor
photo diode, must be a controlled current for getting regular output power, thus the APC
(Auto Power Control) circuit is composed.
Reference Power Supply
A reference power supply for servo is built-in. The current capacity of the reference supply
is about 3 mA.
V
REF1
= 1/2 V
CC1
= 2.5 V
V
REF2
= 1/2 V
CC2
= 1.65 V
where V
CC1
= 5 V and V
CC2
= 3.3 V
19
LD
2
1
V
CC1
PD
170mV
LASER UNIT
C33
R18
Q1
LDON
20
R
V
CC1
R
R/2
V
REF1
22
R
V
CC2
R
R/2
V
REF2
FL8380
FL8385
harman/kardon
19
Содержание FL 8385
Страница 11: ...FL8385 FL8385 harman kardon 11 ...
Страница 12: ...FL8385 12 ...
Страница 13: ...FL8385 BLOCK DIAGRAM AN4801 FL8385 harman kardon 13 ...
Страница 20: ...FL8380 FL8385 harman kardon 20 ...
Страница 21: ...FL8380 FL8385 harman kardon 21 ...
Страница 22: ...FL8380 FL8385 harman kardon 22 ...
Страница 23: ...FL8380 FL8385 harman kardon 23 ...
Страница 24: ...FL8380 FL8385 harman kardon 24 ...
Страница 25: ...FL8380 FL8385 harman kardon 25 ...
Страница 46: ...FL8380 FL8385 harman kardon 46 ...
Страница 60: ...FL8385 harman kardon 60 ...
Страница 61: ...FL8385 harman kardon 61 ...
Страница 62: ...FL8385 MAIN BOARD FL8385 harman kardon 62 ...
Страница 63: ...FL8380 FL8385 harman kardon 63 ...
Страница 64: ...harman kardon 64 ...
Страница 65: ......
Страница 66: ...an kardon ...
Страница 67: ...4883 800260 001 FL8385 VFD BOARD VDF BOARD POWER BOARD FL8385 harman kardon 67 ...
Страница 68: ...REMOTE IN OUT BOARD FL8385 harman kardon 68 ...
Страница 69: ...4560 4560 4560 HEADPHONE BOARD FL8385 harman kardon 69 ...