Tesca Technologies

Decade Resistance Box are precision instruments intended for general laboratory use, R&D and educational purposes. These are used as a multiplier, shunt, substitution resistor, or as an arm for AC or DC bridges. Specifications Metal Film Resistor Accuracy 1% Power Rating 1Wat Maximum Working Voltage 500 Volts.

Digital Trainer is intended for elementary as well as advance training of Digital electronics and for bread board digital circuits, AND, OR, NOT, NAND, NOR, XOR, Three State Buffer, RS Latch, JK Flip Flop, Monostable Multibrator. and UP/ DOWN Counter. Practical experience on this board carries great educative value for R & D labs, Science and Engineering Students. Specifications: 01. Breadboard : Solderless Bread board with 1680 inter connected Tie Points 02. Pulse Switches : 2 No?s. Bounce free push buttons 03. Logic Switches : 8 logic level Switches in Dip type . 04. Power Supply : Fixed: +5V at 750 mA 5. Power Sockets : Logic Probe Power Supply Sockets 06. Logic Input : 8 LED buffered logic level indicators 07. Variable Clock : Fine adjustment of clock frequency. Clock range selection L : 10 ? 40 Hz, H : 1K ? 20K Hz. 08. Jacks : 2mm to BNC Socket 2 No. 2mm to 4mm Socket 2 No.

PHYSICS OF FIBER OPTICS TRAINER is designed to learn basic physics of fiber optics including fiber end preparation. Students can also study the construction of transmitter & receiver to form analog & digital link. Ample number of experiments can be performed with this kit by referring to the exhaustive manuals provided with the kit. Features: 01. On-board Function Generator. 02. Transmitter : 1 No. 03. Receiver : 2 Nos 04. Fiber Optic Analog Link. 05. Fiber Optic Digital Link. 06. Signal strength indicator. Technical Specification: 01. Transmitter : 1 No. LED. Peak wavelength of emission 635 nm Red visible. 02. Receiver : 2 Nos. silicon photo detectors 03. Modulation : Intensity modulation. 04. Driver Circuit : Analog and digital configuration for 635 nm LED. 05. Analog Bandwidth : 35KHz. 06. Digital Bandwidth : 50KHz. 07. On-Board Function Generator : 08. Sine Wave &TTL Square Wave : 09. Frequency Range : 1Hz to 10Hz, 10Hz to 100Hz, 100Hz to 1 K H z , 1 K H z t o 10KHz 10. Amplitude : 0 to 4Vpp. (Except Square) 11. Voice Communication : Fiber Optic voice link using dynamic MIC &SPEAKER 12. Signal strength indicator : 8 LED's provided to m e a s u r e o p t i c a l power. 13. Fiber Optic Cable: 14. Type : 1000 micron Step Index, Multimode Plastic Fiber 15. Fiber Lengths : 1&5 Meter. 16. Power Supply : GND, +5V, +12V, -12V at100mAINT.

Experimental Training Board has been designed specifically to study the behavior of the Reactive Elements and Time Dependent Network Analysis. Practical experience on this board carries great educative value for Science and Engineering Students. Object: 01. To study Charging & Discharging of a Condenser. 02. To Calibrate D.C. meter for A.C. voltage measurements. 03. To construct the vector (phasor) diagram for series L-R circuit and to calculate the power factor and "Q" at 50 Hz. 04. To study series LCR resonance circuit and its "Q". 05. To study series L-C resonance circuit and from it to find out the true value of "L". 06. To study series C-R circuit. 07. To study different types of filters. 08. To study the parallel R-C resonance circuit. 09. To study the parallel L-C resonance circuit and to find its "Q". 10. To verify circuit laws. 11. To find out the impedance and reactance of LCR reactive elements and to plot their reactance curves. 12. To plot "LISSAGOUS" figures. Features: The board consists of the following built-in parts: 01. Mains Transformer having secondary tappings of 10V, 20V, 30V, 40V, 50VA.C. at 500mA. 02. D.C. Voltmeter, 65mm rectangular dial with switch selectable ranges of 10V, 20V, 30V, 40V and 50V. 03. Four Rectifier diodes. 04. SPDT switch. 05. Potentiometer and adequate no. of other electronic components. 06. Mains ON/OFF switch, Fuse and Jewel light. * The unit is operative on 230V ±10% at 50Hz A.C. Mains. * Adequate no. of patch cords stackable from rear both ends 4mm spring loaded plug length ½ metre. * Good quality, reliable terminal/sockets are provided at appropriate places on panel for connections & observation of waveforms. * Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.

Experiments: Study of Reflex Klystron Frequency, Guide Wavelength Measurement SWR, Reflection Coefficient Measurement Impedance Measurement Instruments: SKPS 1 VSWR Meter 1 Components: Cooling Fan1 Detector Mount 1 Fixed Short 1 D.R.F. Meter1 Isolator 1 Klystron Mount 1 Matched Termination1 Movable Short1 S S Tuner1 Slotted Section 1 Tunable Probe 1 Variable Attenuator 20 dB 1 Wave Guide Stand 4 Accessories: BNC to BNC Cable2 Mains Cord 2 Op. Manual 1

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