Heathkit AR-14 - Page 75

BLOCK
DIAGRAM
FM - TUNER,-------------------------------------------------------------- PO WE R SUPP LY,--------------------------------------------------------------
01
02
04
:m n
RF
1ST IF
ANTENNA
AMPLIFIER
MIXER
AMPLIFIER
03
LOCAL
AFC
OSCILLATOR
as
06
2ND IF
3R D IF
AMPLIFIER
AMPLIFIER
AGC
07
RATIO
4TH IF
AMPLIFIEP
DETECTOR
POWER
TRANSFORMER
BRIDGE
RECTIFIER
ZENER
DIODE
REGULATOR
1-MULTiPLE-x1----------------------------;;-------::----------------------L------AMPLi~ER,------------~~:;.-------------------------F------------------~
STEREO STEREO TO STEREO ":::::_JOUTPUT
INDICATOR LAMP AC
INDICATOR
AMPLIFIER
08
At..[)10
L+R
IL+RI + ( L-R f
( L+R ) • (L - Rl
7N
~
~
0
~
~
+
'IJ'M/\NIMNV\
V\/IMMMM/v
19 ICC
19 KC
38 KC
LEFT WAVEFORM
0
=~
RIGHT WAVEFORM
ANO
AND
"
+ i:i;~~~N
LEFT WAVEFORM
f\f\fv
0
-~
CD
RIGHT WAVEFORM
RIGHT
L------~~-- CHANNEL
AMPLIFIER
SOURCE SWITCH
PHONO
LEFT
@
AUX
@
PHONO
AUX
RIGHT
C
~-----------------------------------------------------------------------------------------------------------------------------------------------------
I
✓