Baza Porad Serwisowych
AM OSC AM IF AM DET Vcc
1 3 5 7 6
LOCAL
OSCILLATOR
4
RF
AM
AM 8
AMPLIFIER
IF AGC
2 DETECTOR
AND MIXER
AMLIFIER
TDA1220B
AM ANT
TDA7220/D AFC
FM IN
16 AF OUT
FM IF
AUDIO 9
FM
AMPLIFIER
AMP.
AM OSCILLATOR 1 16 IF FM INPUT DETECTOR
LIMITER
AM
AM INPUT 2 15 IF FM BYPASS
AM/FM SWITCH
AM
REF 10
AM MIXER OUT 3 14 IF FM BYPASS
VOLTAGE
FM
AM AMP AGC 4 13 FM DETECTOR
FM
AM IF INPUT 5 12 FM DETECTOR
AM DET BYPASS 6 11 GROUND
15 14 12 13 11
FM DET
AM DETECTOR 7 10 +Vcc
AM AGC BYPASS 8 9 AF OUTPUT
AM/FM SW
FM
AM
Rys.33. Opis wyprowadzeń, schemat blokowy i aplikacja układów scalonych TDA1220B i TDA7220/D.
SERWIS ELEKTRONIKI
TDA7220/D
TDA1220B