IMPLEMENTATION OF FREQUENCY DEMODULATOR USING THE PLL ... In our project we are using the PLL demodulation method using ICLM565 which is FM demodulation IC. The LM565 and LM565C are general purpose phase locked loops containing a stable, highly linear voltage controlled oscillator for low distortion FM demodulation, and a double balanced phase detector with good carrier suppression. The VCO frequency ... ECOMMS 12 Lab 3 Frequency Modulation & Detection The objective in Part 3 is to demodulate an FM signal using a voltage controlled oscillator and observe the waveforms in the time and spectral domains. * Design the test circuit shown in Figure 3. Choose the free running frequency of the Phase Locked Loop (PLL) equal to the carrier frequency of the FM signal. Courses ECOMMS 09 Lab 3 Frequency Modulation and ... * Design the test circuit shown in Figure 3. Choose the free running frequency of the Phase Locked Loop (PLL) equal to the carrier frequency of the FM signal. The design equation is f0 = 0.3 RC, where R = R1 R2. Figure 3: FM demodulator circuit using the LM565 PLL. Experiment Topic: FM Demodulator KMUTT 8 3: Implementation of FM demodulator by Using LM565 PLL Figure 8 4 is the circuit diagram of LM565 phase locked loop, we can use this circuit as a FM demodulator. When the input signal frequency increases, then the output signal voltage decrease. However, when the input signal frequency decreases, the output signal voltage PLL FM Detector s: .daenotes Figure (b): FM PLL Detector IC 565 Internal Block Diagram. In figure (b), notice that PLL IC consists of two power supply pins marked ±Vcc. The positive terminal of the Vcc is connected to pin number 10, and the negative (ground) terminal of Vcc is connected to pin number 1. The output signal to the phase detector is applied to pin numbers 2 and 3. The VCO output is applied to the phase detector through pin number 5. Experiment4 Frequency Demodulator Ki??isel Sayfalar Figure 3: Block Diagram of Phase Locked Loop You can use LM565 PLL IC. As long as the frequency deviation of the FM signal does not cause the PLL to exceed its tracking range, the output at the modulator and the VCO output of the PLL at the demodulator should remain frequency locked together. 2 PROCEDURE a. EXPERIMENT #8 FREQUENCY MODULATION N0GSG CIRCUIT ANALYSIS: This experiment is in two parts, an FM modulator and an FM detector. The circuitry is designed to operate in the VLF band at a carrier frequency of 100 kHz. The VCO portion of an LM565 is used to create the FM waveform, and an LM565 phase locked loop (PLL) operates as the FM detector. FM Modulator EE133 Lab 4 FM Demodulation using the PLL Lab 4 FM Demodulation using the PLL EE133 Prof. Dutton EE133 Winter 2004 3 3 FM Demodulation using the PLL Now that you’ve seen how the PLL tracks a signal, we will explore one of its applications, FM demodulation. If we recall the original definition of FM, it is a signal whose frequency is proportional to a modulating voltage. FM receivers. FM demodulation | All About Circuits If the receiver uses a PLL to demodulate the FM, it would likely be at the intermediate frequency (IF). If your signal is narrow band, a few kHz or so you could get by with an IF of less than 500 kHz which is the maximum frequency for the LM565's oscillator. PLL FM demodulator circuit using XR2212 . Design, working ... PLL FM demodulator. A simple PLL FM demodulator circuit using IC XR2212 is shown here. XR2212 is a highly stable, monolithic PLL (phase locked loop) IC specifically designed for communication and control system applications. The IC has 0.01 Hz to 300KHz frequency range, 4.5 to 20V operating voltage range, 2mV to 3Vrms dynamic range,...

figure 3 fm demodulator circuit using the lm565 pll Gallery


pll motor control

pll motor control

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