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Frequency Response Of Passive Filters
UNIVERSAL PH PAPER
ATTENUATORS - CHARACTERISTICS AND TESTING METHODS
Objectives :
To construct attenuator and calculate the attenuation 0.1db, 0.2dB and 0.3dB. Audio input sine wave Vi should be given from audio frequency oscillator. The output of the attenuator should be observed. Attenuation (dB) = -20 log (V0 / Vi).
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
COMPOSITE BAND PASS FILTER (PASSIVE TYPE)
Objectives :
To construct composite Band Pass filter and to study that the BPF passes in between low and high frequencies and observe the lower cut off frequency and upper cut off frequency.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
COMPOSITE HIGH PASS FILTER (PASSIVE TYPE)
Objectives :
To construct composite section HPF and observe the output frequency response that passes only high frequencies.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
COMPOSITE LOW PASS FILTER (PASSIVE TYPE)
Objectives :
To construct T and type high pass filter and observe the output frequency response.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
CONSTANT K TYPE: LOW PASS FILTER (PASSIVE TYPE)
Objective:
To construct T or low pass filter using inductors and capacitors and to test the cutoff frequency of the filter. Different L &C combinations are provided to take out different readings.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
CONSTANT K-TYPE : HIGH PASS FILTER (PASSIVE TYPE)
Objectives:
To construct T or section high pass filter and to study the frequency response that passes only high frequencies. That is, R will cut off low frequencies.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
CONSTANT K-TYPE: BAND PASS FILTER (PASSIVE TYPE)
Objective:
To construct passive band pass filter and observe the frequencies that pass in between low and high frequencies. To note down lower cut-off frequency and upper cut-off frequency.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
EQUALISER - FREQUENCY RESPONSE TESTING
Objectives:
To construct Equaliser and test the frequency response of the network.
Built in regulated power supply: + 15V/500mA
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
Filter Paper Circles
LENS CLEANING PAPER
LITMUS PAPER
M DERIVED LOW PASS FILTER (PASSIVE TYPE)
Objectives :
To construct T or section m derived low pass filter and observe the frequency response. It should be however noted that to spanide the impedance of a capacitor by m, its capacity must be multiplied by m. To observe the cut off frequency and to plot the graph between frequency and attenuation.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
T-TYPE ATTENUATORS - CHARACTERISTICS & TESTING METHODS
Objective:
To construct T-attenuator 1dB -9dB. Audio frequency input (Vi) should be given from audio frequency oscillator. The output of the T-attenuator Vout is taken at the output. Attenuation (dB) =-20 log (V0/Vi) is measured.
Input Supply: 230 VAC/50Hz mains operated.
Dimension: 27cms x 17cms x 10cms.
Weight: 500gms
