Amplitude Modulation and Demodulation
(Model: AC-01)
Objectives:
To construct amplitude modulator using transistor and observe the amplitude modulated waveforms and check the percentage of modulation.
To study AM demodulation by using diode modulator..
Specifications:
This unit consists a built in power supplies of +12V,-12V @300mA.
Along with Carrier generator, AM modulator and AM demodulator circuits.
Carrier generator is designed using 8038 IC with fixed frequency 100KHZ and fixed amplitude. .
Set of 2mm patch cards and user manual is accompanied with this kit .
Optional items required:
Dual trace CRO DC-30MHZ.
.
Frequency Modulation and Demodulation (Model: AC-02)
Objectives:
To study how the modulating signal changes frequency of the carrier rather than amplitude and observe the frequency modulated waveform.
To observe the changes in carrier centre frequency and to observe the frequency deviation, and to observe how the phase lock loop can be used for FM demodulation.
Specifications:
This unit consists a built in power supplies of +12V,-12V@300mA
Along with Carrier generator using 8038 IC with fixed frequency 50KHZ and fixed amplitude. And the direct method is used for modulation circuit with RC combination.
And also phase lock loop 565 IC and Op-amp 741IC is used in demodulator circuit.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Balanced Modulator trainer (Model: AC-03)
Objectives:
To observe the output double side band, with a suppressed carrier signal.
To verify the input audio level directly affects the double side band output amplitude.
To observe the output is minimum with Zero audio output.
To measure carrier output and the peak side band output, and to calculate the carrier suppression.
Specifications:
This unit consists a built in power supplies of +12V,-12V @300mA
Along with Balanced modulator circuit.1496 IC is used as balanced modulator. Two potentiometers are provided to vary the carrier suppression.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Pre-Emphasis & De-Emphasis (Model: AC-04)
Objectives:
To observe the gain of the Pre emphasis and De emphasis filter circuit with respective frequency by applying different Frequency of input signals.
Specifications:
This unit consists a Built in fixed power supplies +12V,-12V @250mA.
Variable Frequency for two different Ranges (200Hz to 2 KHz, 2 KHz to 20 KHz) with selector switch and variable amplitude 5Vpp.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Characteristics of Mixer trainer (Model: AC-05)
Objectives:
To construct frequency mixer and to observe mixer characteristics by giving two different input Frequencies at base and emitter of the transistor and collector output is given to low pass filter to get the output frequency and observe the wave forms.
Specifications:
This unit consists a Built in fixed power supplies +12V,-12V @250mA.
2N 2369 NPN transistor is used as frequency mixer.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Phase Locked Loop Trainer Using (Model: AC-06)
Objectives:
To observe and study the PLL for Free running, locking and Capture Ranges of Frequency.
Specifications:
This unit consists a Built in fixed power supplies +12V, +5V,-5V @500mA.
Built in Square wave Generator with variable frequency 1 k to 10 kHz and amplitude PLL designed with IC 565.
Set of 2mm patch cards and user manual is accompanied with this kit.
To observe the Detector/Modulating signal using synchronous detector circuit from DSB-SC band signal.
Specifications:
This unit consists a Built in fixed power supplies +12V, +5V,-5V @500mA.
variable carrier generator from 50khz to 150khz,AF signal generator and 1496 IC is used as synchronous detector.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Single side band system Trainer (Model: AC-08)
Objectives:
To construct SSB (LSB/USB Signal) using phase shifting method and Demodulation of SSB signal using synchronous Detector.
Specifications:
This unit consists a Built in fixed power supplies +12V, +5V,-5V @500mA.
RF generator with frequency 100 kHz and variable amplitude 0-1.5Vp-p.AF generator with variable frequency 2-6 KHz and variable amplitude 0-10Vp-p.Automatic gain control (AGC) variation to adjust wave shape.
Two balanced modulators LSB, USB, Demodulation blocks are shown individually on trainer. Phase shifter method is used for modulation.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
AGC Characteristics (Model: AC-09)
Objectives:
To observe the gain control at receiver section by using AGC Circuit.
Specifications:
This unit consists a Built in fixed power supplies +12V, +5V,-5V @500mA.
RF generator with fixed frequency 100 kHz and AF frequency with variable amplitude 0-1.5 Vp-p.and the receiver circuit designed with stages of IF amplifiers.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Frequency multiplier &Synthesizer (Model: AC-10)
Objectives:
To study and observe the function of Synthesizing and Multiplying of a two different frequency by using PLL Technique.
Specifications:
This unit consists a Built in power supply of +5V,-5V @250mA
inbuilt signal generator 1 KHz to 10 KHz with Variable Amplitude.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Squelch Circuit (Model: AC-11)
Objectives:
To verify the operation of a squelch circuit used in AM radio receiver.
Specifications:
This unit consists a Built in fixed power supply of +12V,-12V, +6V @250mA.
AF signal generator with Variable Amplitude.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Digital Phase Detector (Model: AC-12)
Objectives:
To detect the phase difference between two square wave signals using digital phase detector.
Specifications:
This unit consists a built in power supply of +12v,-12v, +5V,-5V @250mA.
Square wave generator and Pulse Generator. Phase detection using Ex-OR and Edge triggered circuit using Ex-OR gates and Nor gates with variable amplitude.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Diode Detector Characteristics (Model: AC-13)
Objectives:
To detect and observe the AF signal from modulated signal through AM modulation technique.
Specifications:
This unit consists a built in power supply of +12v,-12v,@250mA.
RF signal generator with variation of amplitudes and AF signal Generator.AM modulated circuit, simple diode detector circuit and practical diode detector circuit with AF amplifier circuit. .
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
Sample &Hold Circuit (Model: AC-14)
Objectives:
To study and observe the operation of the Sample &hold circuit.
Specifications:
This unit consists a built in power supply of +5V,-5V,+12V @500mA.
Square wave generator with variable frequency 2Hz to 29Khz. sampled and hold circuit using Op-amp operation TL084 IC,398 IC.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
AM/FM Common board Demonstrator Trainer (Model: AC-15)
Objectives:
To construct amplitude modulator using transistor and observe modulated wave forms and check the percentage of modulation.
To observe how the modulating signal changes frequency of the rather than amplitude and observe the frequency modulated waveform.
To observe the changes in carrier centre frequency and to observe the frequency deviation. And to observe how the phase lock loop can be used for FM modulation.
Specifications:
This unit consists a Built in fixed power supplies of+5V,-5V, +12V @500mA
along with carrier generator, AM modulator and AM Demodulator. Carrier generator using 8038 IC with fixed frequency 50 KHz and fixed amplitude. And the direct method is used for modulation circuit with RC combination. And also phase lock loop 565 IC and Op-amp 741 IC is used in Demodulator circuit.
Set of 2mm patch cards and user manual is accompanied with this kit.
Optional items required:
Dual trace CRO DC-30MHZ.
AM/FM Radio Receiver Measurement Trainer (Model: AC-16)
Objectives:
To observe the characteristics sensitivity, selectivity, fidelity and Intermediate frequency response of FM receiver.
Specifications:
This unit consists a Built in fixed power supplies of+5V,-5V, +12V @500mA
AF generator with variable frequency 200 Hz to 10 KHz and with variable amplitude.
RF generator with variable frequency 300 KHz to 1200 KHz and with variable amplitude. Digital display for both RF & AF frequency read out. IC 1619 is used for AM receiver measurements Built in AM Modulator.
Set of 2mm patch cards and user manual is accompanied with this kit.
