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Scotch Yoke Mechanism

Product Code: DUFONEP709601 - (Scotch Yoke Mechanism)

Scotch Yoke Mechanism Two handles make the unit easier to carry. The crank pin can be set at different radii on the disc.  The slider crank is attached to the crank pin on one side.  An anodised aluminium disc used as crank is mounted on ball bearings on a white plate.  The experimental unit is used to generate and investigate pure harmonic reciprocating motion. The model is equipped with plastic feet and is placed on the laboratory table for the experiment.  This disc has a pointer so that the input angle can be exactly read on the integrated angle measuring scale.  On the other side the pin is mounted in straight guide that is fitted with a ruler to allow the output stroke to be read off with precision.....

Scotch Yoke Mechanism Lab Kit Suppliers China

Product Code: DUFONLAB-KIT-900054 - (Scotch Yoke Mechanism Lab Kit Suppliers China)

Scotch Yoke Mechanism Lab Kit Suppliers China....

Scott-Russell Straight Line Motion

Product Code: DUFONEP705032 - (Scott-Russell Straight Line Motion)

Scott-Russell Straight Line Motion Features:- Low cost, effective teaching Self contained Easily seen from a distance Mechanism clearly understandable Loci drawn for further study Standard mechanism for generating a straight line. Range of Experiments To determine the loci of the moving parts of the standard mechanism  To establish the characteristics of that mechanism: for example to see which links move faster than others or whether a particular motion (such as a straight line) is developed  Description:- One of sixteen mechanisms built on an A3 board equally suitable for the classroom, drawing office or laboratory. The principal components are made from amber coloured Perspex, pivoted with hollow rivets and mounted on a white melamine board for contrast and visibility. To see the mechanisms move is far more instructive and convincing than listening to a static lecture. The hollow rivets accept a pencil for transferring the loci of the joints to a sheet of paper, clipped to the board. This mechanism consists of two links with one fixed pivot and one slider. The longer link AB has a pivot at its mid-point to which the shorter link is connected. Due to CD = BD = AD the geometry guarantees that as B moves toward C the point A must travel in a straight line. This equipment is part of a range designed to both demonstrate and experimentally confirm basic engineering principles. Great care has been given to each item so as to provide wide experimental scope without unduly complicating or compromising the design. Each piece of apparatus is self-contained and compact. Setting up time is minimal, and all measurements are made with the simplest possible instrumentation, so that the student involvement is purely with the engineering principles being taught. Each mechanism is supplied with a manual which gives full instructions for producing the loci and applications of the assembly. The typical graphical result is appended.....

SCR And AC Phase Control

Product Code: DUFONEP702672 - (SCR And AC Phase Control)

SCR And A.C. Phase Control Object:- Resistance trigger circuit for SCR to be operated as half-wave static switch and limited range half wave phase control. R.C. trigger circuit for SCR operated as full range half-wave phase control. R.C. trigger circuit for SCR connected in bridge full range full-wave phase control. Half -wave phase control with SCR using UJT trigger circuit-resistance controlled ramp. Full-wave phase control with Inverse parallel SCRs using UJT trigger circuit resistance controlled ramp. Full-wave phase control with half controlled bridge converter using UJT trigger circuit resistance controlled ramp. UJT trigger circuit with series transistor control ramp. UJT trigger circuit using shunt transistor controlled pedestal. UJT trigger circuit resistance controlled pedestal with improved ramp. UJT trigger circuit resistance controlled pedestal with cosine-modified ramp. Features: An isolation transformer 230 VA.C. 250 mA. This protects external instruments from damage if they are not isolated. Bridge rectifier for full-wave phase control with zener regulator. Two potentiometers for resistance controlled ramps Two potentiometers for resistance controlled pedestals. Uni-junction transistor 2N 2646. Pulse transformer 1:1:1. Three SCRs for half-wave and full-wave inverse parallel connections. Adequate no. of other electronic components. Mains ON/OFF switch, fuse and jewel light. Specifications: The unit is operative on 230V ±10% at 50 Hz A.C. mains. Adequate no. of patch cords stackable 4 mm spring loaded plug length ½ meter. 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. Weight: . 7 kg. (approx.) Dimension: W 412 x H 150 x D 310 Other apparatus required:  Digital multimeter 3¾ digit order code 16901 0-30 V, 1 amp IC regulated power supply Other Information Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box....

SCR Characteristics Apparatus

Product Code: DUFONEP702335 - (SCR Characteristics Apparatus)

SCR Characteristics Apparatus To plot Anode current Vs Anode Cathode Voltage Characteristics. Instrument consist of Two DC Regulated Power Supplies 0-3VDC/50mA & 0-150V DC, three meters for voltage & current measurement, SCR mounted on panel, connections of supplies. Meters & SCR brought on terminals.  Dimension 15"x8"x4".....

SCR Converters and Reactive Loads

Product Code: DUFONEP702675 - (SCR Converters and Reactive Loads)

SCR Converters and Reactive Loadsâ€&lsaquo;  Object:- Study of SCRs triggering in half controlled bridge under reactive loads-limitations of simple UJT triggering circuits. Study of SCR triggering in half controlled bridge under reactive loads using auxiliary SCR triggering circuit with extended pulse technique Study of half controlled bridge and action of freewheeling diode Study of fully controlled full wave 4-SCR bridge operation under converter mode Features: The board consists of following built-in parts: UJT relaxation oscillator and triggering pulse generator with resistance ramp control Three numbers of pulse transformers each 1:1:1 type Mains transformer having outputs 0-12V at 100 mA, 0-12V at 100 mA & 0-32V at 500 mA Two SCRs connected in pulse amplifier and extender configuration and used as auxiliary SCR for triggering main SCRs under reactive load Two SCRs and two diodes connected in half-controlled bridge configuration Four SCRs connected in full wave bridge configuration Resistive, Inductive and Capacitive load which can be used individually or in combinations 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 4 mm spring loaded plug length ½ metres 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 Weight: 3 Kg. (Approx.) Dimension: W 340 x H 110 x D 210 Other Apparatus Required: Digital Multimeter 3¾ digit - Order Code 16901 Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed) Other Information: Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box  ....

SCR DC Circuit Breaker

Product Code: DUFONEP702685 - (SCR DC Circuit Breaker)

SCR DC Circuit Breaker Power Electronic Training Board has been designed specifically to study the SCR as D.C. circuit breaker when the D.C. circuit exceeds specified limit. The set up works on 30V D.C. and permits the circuit breaker to be adjusted from 100mA to 1.8 Amp. This Training Board also includes Electronic Crow Bar circuitry to demonstrate the over voltage and over current trip under D.C. Condition. Practical experience on this board carries great educative value for Science and Engineering Students. Object: To study SCR turn OFF action under varying loads. To study D.C. over voltage trip action. To study over current trip action. Features: The board consists of the following built-in parts: 20V D.C. Zener Stabilized Power Supply for UJTs. Two SCRs, one main and one auxiliary. Two push button switches, one to trigger the main SCR and other to trigger the auxiliary SCR which turns the main SCR OFF. Two UJTs connected in relaxation oscillator mode. Two potentiometers to adjust the over voltage and over current limit. Capacitor bank to study commutation under different load. Resistance bank for varying load.    Adequate no. Of other Electronic Components. Fuse protection in D.C. supply. The unit is operative on 30V D.C. at 2 Amp. Adequate no. of patch cords stackable 4 mm spring loaded plug length ½ metre. Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/observation of wave forms. Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References Weight:  4 Kg. (Approx.) Dimension:  W 412 x H 150 x D 310 Other Apparatus Required: Digital Multimeter 3¾ digit - Order Code 16901 0-30V D.C.-2 Amp, IC Regulated Power Supply Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed) Note: Specifications are subject to change. Other Information: Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box  ....

SCR Lamp Flasher

Product Code: DUFONEP702686 - (SCR Lamp Flasher)

SCR Lamp Flasher Power Electronic Training Board has been designed specifically to study the use of SCR and TRIAC in D.C. and A.C. lamp flasher respectively. The flasher is useful for students of understand the application of SCRs in D.C. flasher, triggered by UJT relaxation oscillator. The repetition rate of the flasher can be varied by varying the frequency of the relaxation oscillator. This Training Board also makes use of the same SCR D.C. flasher for making the TRIAC ON and OFF in the A.C. power circuit which operates a normal 230V incandescent lamp used as load. Practical experience on this board carries great educative value for Science and Engineering Students.     Object:  To perform the following experiments: Symmetrical D.C. flasher High power A.C. flasher Features: The board consists of the following built-in parts: 12V D.C. at 100mA, IC Regulated Power Supply Two SCRs TRIAC 4 Amp./400PIV 230V/40 Watt lamp for load UJT 2N 2646 in relaxation oscillator mode Two LEDs to demonstrate Twin-lamp D.C. flasher Potentiometer for frequency variation Two numbers of toggle switches, one for D.C. flasher, and one for A.C. flasher Adequate no. of other Electronic Components 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 4 mm 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 Weight : 5 Kg. (Approx.) Dimension : W 412 x H 150 x D 310 Other Apparatus Required: Digital Multimeter 3¾ digit - Order Code 16901 Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed) Note: Specifications are subject to change Other Information: Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box  ....

SCR Regulated DC Power Supply

Product Code: DUFONEP702676 - (SCR Regulated DC Power Supply)

SCR Regulated DC Power Supply   Study of output voltage variation, regulation and ripple in open loop (without feedback) by varying the load using inductance input filter.            Same as above experiment by using capacitor input filter. Study of output voltage variation, regulation and ripple in closed loop feed back by varying the load using inductance input filter shunt transistor pedestal control. Same as above experiment by using capacitor input filter-shunt transistor pedestal control Study of variation in output voltage for different slopes of linear resistance controlled ramp Study of line voltage variation (open loop) compensation Study of output voltage variation, regulation and ripple in closed loop feed back by varying load-series transistor controlled ramp in differential amplifier mode Features: The board consists of following built-in parts: 24V D.C. Regulated Power Supply internally connected Freewheeling diode Transformer 0-40V, 500 mA Two SCRs connected in bridge configuration with rectifiers Four Diode connected in bridge and one zener for control circuit supply UJT 2N 2646 for relaxation oscillator to supply triggering pulses for SCRs Pulse transformer 1:1:1. Three potentiometers for different modes of voltage adjustment Adequate no. of other Electronic Components          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 4 mm 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 Weight:- 3 Kg. (Approx.) Dimension:- W 340 x H 110 x D 210 Other Apparatus Required:- Digital Multimeter 3¾ digit - Order Code 16901 Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed) Variac, 0-230VA.C. @ 2Amp Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box  ....

SCR Ring Counter

Product Code: DUFONEP702680 - (SCR Ring Counter)

SCR Ring Counter Stage SCR Ring Counter which can be extended to any number of stages by adding identical circuitry, if required. This board demonstrates high power load switching in a sequential order. This set-up can also be used as sequential flash over. The time delay between each sequence is adjustable. This training board facilitates students to understand UJT triggering circuit for SCRs and communication circuit for turning them off in sequential operations. Practical experience on this board carries great educative value for Science and Engineering Students. Object: To study operation of Ring Counter with internal load To study operation of Ring Counter with external load Features:  The board consists of the following built in parts: 20V D.C. Zener Regulated Power Supply for control pulse generator UJT 2N 2646 in relaxation oscillator configuration which provides triggering pulses to SCRs Potentiometer for variable time delay Three SCRs to form three stages of ring counter Three diodes for providing triggering pulses Three dual indicating lamps for indication of sequences UJT 2N 2646 under experiment Adequate no. of other Electronic Components Fuse for protection The unit is operative on 220V D.C. Source Adequate no. of patch cords stackable 4 mm 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 Weight:  4 Kg. (Approx.) Dimension:  W 412 x H 150 x D 310 Other Apparatus Required: 220V D.C. at 100mA IC Regulated Power Supply  Other Information: Pay Mode Terms:  T/T (Bank Transfer) Port of Dispatch:  India Delivery Time:  4 weeks Packaging Details:  Corrugated Box....

SCR Triggering Circuit

Product Code: DUFONEP702681 - (SCR Triggering Circuit)

SCR Triggering Circuit SCR Triggering using. This Training Board gives a better understanding on the operation of Signal Conditioner and Pulse Generator. Practical experience on this board carries great educative value for Science and Engineering Students. Object:- To perform the following experiments:- SCR triggering with controlled gate pulses Change of firing angle in response to the change in reference voltage Functioning of Signal Conditioner and Pulse Generator. Features:- The board consists of the following built in parts:- + 15V, +10V D.C. at 50mA, IC Regulated Power Supply internally connected + 5V D.C. at 50mA, IC Regulated Power Supply Isolated Synchronising Signal 24V at 300mAA.C. supply Signal Conditioner and Pulse Generator IC TCA-785 Op to Coupler SCR 100V/1Amp Transistor BC-107 Adequate no. of other Electronic Components 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 4 mm 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 Weight:- 4 Kg. (Approx.) Dimension:- W 412 x H 150 x D 310 Other Apparatus Required:- Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed) Bulb 24V/7W Note:- Specifications are subject to change Other Information:- Pay Mode Terms:- T/T (Bank Transfer) Port of Dispatch:- India Delivery Time:- 4 weeks Packaging Details:- Corrugated Box....

Screw Drivers

Product Code: DUFONEP709541 - (Screw Drivers)

Screw Drivers....

Screw Gauge Micrometer Demonstration

Product Code: DUFONEP702547 - (Screw Gauge Micrometer Demonstration)

Screw Gauge Micrometer Demonstration About 200 mm long, made of aluminum. Black spray painted individually packed. Measurements are approximate.  ....

Screw Gauge Micrometers

Product Code: DUFONEP702546 - (Screw Gauge Micrometers)

Screw Gauge Micrometers Stainless Steel screw (rod) accurately machined. Brass body, dull nickel plated finish. 25 mm x 1 mm pitch. This item is sold individually. An inner pack contains 10 pieces.  ....

Screwdriver, flat, 6, 1 pc/set

Product Code: DUFONLAB-LAB900310 - (Screwdriver, flat, 6, 1 pc/set)

Screwdriver, flat, 6, 1 pc/set Manufacturer in India....

Screwdriver, phillips, 6, 1 pc/set

Product Code: DUFONLAB-LAB900311 - (Screwdriver, phillips, 6, 1 pc/set)

Screwdriver, phillips, 6, 1 pc/set Manufacturer in India....

Scriber

Product Code: DUFONEP709744 - (Scriber)

Scriber Knurled & blacked grip. Double ended hardened steel engineers scriber.....

Sea Floor Spreading Activity Model

Product Code: DUFONEP708216 - (Sea Floor Spreading Activity Model)

Sea Floor Spreading Activity Model Recreate the oceanic expansion of the past 150 million years.  When Alfred Wegener was astute enough to propose continental drift in the early 1900s. He was unable to explain what natural force could move entire continents.  Now you can demonstrate to your class the forces behind continental drift: the creation of new lithosphere at mid-ocean ridges which serves to push the tectonic plates apart.  That explanation would not come until years later as scientists began to understand the concept of seafloor spreading.  You'll be able to retrace the process over the past 150 million years, providing visual 'snapshots' as the earth evolved through the Includes comprehensive teacher's guide.  Jurassic and Cretaceous Periods and into the Cenozoic Era.  Size 600mm (L) x 350mm (W).....

Sea Shapes

Product Code: DUFONEP710139 - (Sea Shapes)

Sea Shape Invites youngsters to identify basic shapes that transform in-to undersea creatures. Glossary of sea facts included.....

Sea Water Map

Product Code: DUFONEP702739 - (Sea Water Map)

Sea Water Map Erosion, Transportation of the particles & deposition of the eroded material Printed in multi color on 80 gsm map litho paper Size:- 50 × 75 cms. Laminated with hot seal polyester film on both sides Fitted with first quality plastic rollers at top and bottom. Available in English & Hindi combined....

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