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Summary of Contents for ScienTECH AB51
- Page 1 Low Pass and High Pass Operating Manual Ver.1.1 An ISO 9001 : 2000 company 94-101, Electronic Complex Pardesipura, Indore- 452010, India Tel : 91-731- 2570301/02, 4211100 Fax: 91- 731- 2555643 e mail : info@scientech.bz Website : www.scientech.bz Toll free : 1800-103-5050...
- Page 2 AB51 Scientech Technologies Pvt. Ltd.
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Page 3: Table Of Contents
RoHS Directive concerns with the restrictive use of Hazardous substances (Pb, Cd, Cr, Hg, Br compounds) in electric and electronic equipments. Scientech products are “Lead Free” and “Environment Friendly”. It is mandatory that service engineers use lead free solder wire and use the soldering irons upto (25 W) that reach a temperature of 450°C at the tip as the... -
Page 4: Introduction
AB51 Introduction AB51 is a compact, ready to use Active Filters experiment board. It incorporates Low pass filter and High pass filter on a single board and illustrates the functionality of Active filters at adjustable cutoff frequency. It can be used as stand alone unit with... - Page 5 Optical Transducer (Photoconductive cell/LDR) AB93 Optical Transducer (Phototransistor) AB96 Temperature Transducer (RTD & IC335) AB97 Temperature Transducer (Thermocouple) AB101 DSB Modulator and Demodulator AB102 SSB Modulator and Demodulator AB106 FM Modulator and Demodulator ………… and many more Scientech Technologies Pvt. Ltd.
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Page 6: Theory
Figure 1 Equation of low pass filter is Vin = Input signal Voltage Vout =Output signal Voltage AF = 1 + R / R1 = pass band gain of filter f = frequency of input signal Scientech Technologies Pvt. Ltd. - Page 7 It is a frequency selective circuit, which passes signals of frequencies above it's low cut off frequency (f ) and attenuates signals of frequencies below f Figure 2 Equation of High pass filter is Vin = Input signal Voltage Vout = Output signal Voltage Scientech Technologies Pvt. Ltd.
- Page 8 . Below f when input frequency is increased tenfold (one decade), the voltage gain is multiplied by 10. Gain (db) = 20 log | Vout / Vin | i.e. Gain Roll off rate is −20db / decade. Scientech Technologies Pvt. Ltd.
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Page 9: Experiment 1
Pass band gain of Low Pass Filter. • Plot the frequency response of Low Pass Filter. Equipments Needed : Analog board of AB51. DC power supplies +12V, −12V from external source or ST2612 Analog Lab. Function generator or ST2612 Analog Lab. Oscilloscope Digital Multimeter 2 mm patch cords. - Page 10 Vout |Vout / Vin| = gain Log |Vout / Vin| (Hz) 10 K (f 15 K 20 K 30 K Plot the frequency response of low pass filter using the data obtained at different input frequencies. Scientech Technologies Pvt. Ltd.
- Page 11 = 20 log |Vout / Vin| where Vout = (2) * Vin Roll off rate = −20db/decade Results : Theoretical Practical Pass band gain(A Pass band gain(A ) in db 3db frequency f Gain at 3db frequency (f ) in db Scientech Technologies Pvt. Ltd.
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Page 12: Experiment 2
Pass band gain of High pass filter. Plot the frequency response of High pass filter. Equipments Needed : Analog board of AB51. DC power supplies +12V, −12V from external source or ST2612 Analog Lab. Function generator or ST2612 Analog Lab. - Page 13 Tabulate different values of Vout, gain, gain (db) at different values of input frequency shown in observation Table. Observation Table : Input Gain(db) = 20 frequency Vout |Vout / Vin| = gain Log |Vout / Vin| (Hz) 1K(f 10 K 15 K 20 K Scientech Technologies Pvt. Ltd.
- Page 14 = 20 log |Vout / Vin| where Vout = (2) * Vin Roll off rate = −20db/decade Results : Theoretical Practical Pass band gain(A Pass band gain(A ) in db Low cutoff frequency (f Gain at 3db frequency (f ) in db Scientech Technologies Pvt. Ltd.
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Page 15: Data Sheet
AB51 Data Sheet Scientech Technologies Pvt. Ltd. -
Page 16: Warranty
The repair work will be carried out, provided the product is dispatched securely packed and insured. The transportation charges shall be borne by the customer. For any Technical Problem Please Contact us at service@scientech.bz List of Accessories 2mm Patch Cord (Red) 16” ..............2 Nos.
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