1. What components determine the free-running frequency of the VCO in LM565 of Fig. 14-2? 2. What is the purpose of μA741 in Fig. 14-2? C10.1μ FSK Input -o+5V(Vcc) VR1 10k C4 C5: 0.1 μ. 0.1 μ 0.1 μ 8 10 R3 R4 R5 Phase Rx 7 10K 10K 10k D₁ FSK Detector www ww ww ww 1N4004 + Demodulated Output AMP 6 R₁ 6 100k w₁ R2 100k 3 C₂ 0.05 μ VCO 4 5 9 U1 -5V LM565 -0-5V(VEE) Fig. 14-2 FSK demodulator U2 R6 μ4741 10k

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1. What components determine the free-running frequency of the VCO in
LM565 of Fig. 14-2?
2. What is the purpose of μA741 in Fig. 14-2?
C10.1μ
FSK
Input
-o+5V(Vcc)
VR1
10k
C4
C5:
0.1 μ.
0.1 μ
0.1 μ
8
10
R3
R4
R5
Phase
Rx 7
10K
10K
10k
D₁
FSK
Detector
www
ww
ww
ww
1N4004
+
Demodulated
Output
AMP
6
R₁
6
100k
w₁
R2
100k
3
C₂
0.05 μ
VCO
4
5
9
U1
-5V
LM565
-0-5V(VEE)
Fig. 14-2 FSK demodulator
U2
R6
μ4741
10k
Transcribed Image Text:1. What components determine the free-running frequency of the VCO in LM565 of Fig. 14-2? 2. What is the purpose of μA741 in Fig. 14-2? C10.1μ FSK Input -o+5V(Vcc) VR1 10k C4 C5: 0.1 μ. 0.1 μ 0.1 μ 8 10 R3 R4 R5 Phase Rx 7 10K 10K 10k D₁ FSK Detector www ww ww ww 1N4004 + Demodulated Output AMP 6 R₁ 6 100k w₁ R2 100k 3 C₂ 0.05 μ VCO 4 5 9 U1 -5V LM565 -0-5V(VEE) Fig. 14-2 FSK demodulator U2 R6 μ4741 10k
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