HA17741 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HA17741 Datasheet PDF : 18 Pages
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HA17741/PS
Vertical: 5 V/div
Horizontal: 0.5 ms/div
Test circuit condition
VCC = 15 V, VEE = −15 V
R1 = 110 kΩ, R2 = 11 kΩ
C1 = 0.0015 µF, C2 = 0.015 µF
Test results
f = 929.7 Hz, T.H.P = 0.06%
Figure 9 HA17741 Wien Bridge Sine Wave Oscillator Operating Waveform
Quadrature Oscillator
RT1 C1
Sin out
CT1
−
A1
+
RT2
R1
Cos out
V4
CT2
−
A2
+
D1 R11
R22
R44
D2
R33
V8
Figure 10 Quadrature Sine Wave Oscillator
Figure 10 shows the circuit diagram for a quadrature sine wave oscillator. This circuit consists of two
integrators and a limiter circuit, and provides not only a sine wave output, but also a cosine output, that is,
it also supplies the waveform delayed by 90°. The output amplitude is essentially determined by the limiter
circuit.
7
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