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Installation and Operation
2.3.1
2.3.1.1
Top Level Amplifier Circuit Diagrams
POWER SUPPLY BLOCK
The power supply is protected by a zener diode and bypassed by a capacitor.
Figure 2-3 shows the circuit diagram for the power supply. C P1 = 1.0 μF.
D P1
V S
Power Supply
V DD
C P1
Note:
D P1 is a zener diode with nominal voltage of 6.2V
FIGURE 2-3:
Power Supply Block.
2.3.1.2
NON-INVERTING COMPARATOR
Figure 2-4 shows the circuit diagram for the non-inverting comparator block. The
non-inverting comprator ’s trip points are 0.8V DD and 0.2V DD .
R C1 = R C2 = 10.0 k Ω, R C3 = 30.0 k Ω, R C4 = 50.0 k Ω, C C1 = C C2 = 0.1 uF.
R C3
V DD
Non-Inverting Comparator
R C4
V L
C C1
R C1
R C2
C C2
U C1
V CMP
FIGURE 2-4:
? 2007 Microchip Technology Inc.
Non-Inverting Comparator Block.
DS51681A-page 9
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