Demonstration Models Manufacturer, Suppliers and Exporter in India
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Last updated: 22 October 2026
Quick Answer
Demonstration Models here are open trainer boards and cabinets for studying how consumer electronic equipment operates and where it fails: black-and-white and colour television demonstrators, a two-in-one transistor radio and cassette recorder trainer, an MW radio circuit board and a cathode ray oscilloscope model, most with sockets, plugs or switches for creating faults. JLab lists 5 such trainers here, grouped as television, radio and cassette, and oscilloscope demonstrators.
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Explore the Demonstration Models Range
| Range | Items | What it covers |
|---|---|---|
| Television Demonstrators | 2 | A black-and-white TV demonstrator with CRT and PCB cabinet, complete circuit diagram and 4 mm sockets for creating faults, and its colour version with a colour CRT. |
| Radio and Cassette Trainers | 2 | A two-in-one trainer for the working and faults of an MW transistor receiver, cassette player and tape recorder, and an MW radio circuit board with power supply, AGC, IF, oscillator, antenna and output sections. |
| Oscilloscope Demonstrator | 1 | A demonstration cathode ray oscilloscope on a printed phenolic board, for studying each section and measuring peak voltage, frequency, phase difference, pulse width and rise and fall times. |
Demonstration Models Specifications
The tables give the purpose, construction and fault-creation features stated on each model's own page.
Television Demonstrators (2)
| Product | Specification |
|---|---|
| Demonstration Television Black and White | Purpose: Practical and theoretical study of a TV receiver; Set-up: CRT and PCB cabinet; Fault creation: 4 mm sockets provided for creating faults. |
| Demonstration Coloured Television | Type: Colour TV demonstration kit; Picture tube: Colour CRT. |
Radio and Cassette Trainers (2)
| Product | Specification |
|---|---|
| Demonstration Model of Transistor Cassette Player and Recorder Trainer Kit Two in One | Studies covered: Working and various faults of an MW transistor receiver, a cassette player and a tape recorder; Component mounting: On PCB tags, for easy replacement and fault creation; Protection: Acrylic cover at the top. |
| Demonstration Model for Experiments of MW Radio Circuits | Sections: Power supply, AGC, IF, oscillator, antenna and output sections; Power supply: 6 V DC power supply provided; Speaker: 4 inch (about 10 cm), 8 ohm speaker provided. |
Oscilloscope Demonstrator (1)
| Product | Specification |
|---|---|
| Demonstration Cathode Ray Oscilloscope CRO | Purpose: Study of the working principle of each section; Fault creation: In any section, using banana plugs or switches; Measurements: Peak voltage, frequency, phase difference, pulse width, delay time, rise time and fall time. |
Who Buys This Range
Electronics and radio-TV servicing courses that teach fault-finding on the television demonstrators, the MW radio circuit board and the cassette player trainer, and electronics laboratories that study each section of the demonstration cathode ray oscilloscope.
Frequently Asked Questions
How are faults created on the demonstration models?
The black-and-white television demonstrator has 4 mm sockets for creating faults, the cassette player trainer mounts its components on PCB tags for easy replacement and fault creation, and the demonstration CRO allows faults in any section using banana plugs or switches.
What can be measured with the Demonstration Cathode Ray Oscilloscope?
It is a basic demonstration model for studying the working principle of each section, and it measures peak voltage, frequency, phase difference, pulse width, delay time, rise time and fall time.
Which sections does the MW radio circuit model show?
The Demonstration Model for Experiments of MW Radio Circuits has power supply, AGC, IF, oscillator, antenna and output sections on a screen-printed phenolic board, with a 6 V DC supply and a 4 inch, 8 ohm speaker.
Request a Quote
List the trainers you need with quantities, for example the Demonstration Coloured Television or the Demonstration Cathode Ray Oscilloscope CRO, and send the list through the contact page.
Demonstration Television Black and White
Product Code : EL-DM-1115
Black-and-white TV demonstrator: CRT and PCB cabinet with a complete circuit diagram, and 4 mm sockets for fault creation.
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Demonstration Coloured Television
Product Code : EL-DM-1116
Colour TV demonstration kit with a colour CRT, the colour version of the Demonstration Television Black and White.
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Demonstration Model of Transistor Cassette Player and Recorder Trainer Kit Two in One
Product Code : EL-DM-1117
To study working & various faults of MW Transistor receiver, To study working & various faults of Cassette Player and To Study working & various faults of Tape Recorder.
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Demonstration Model for Experiments of MW Radio Circuits
Product Code : EL-DM-1118
MW transistor radio trainer with power supply, AGC, IF, oscillator, antenna and output sections, a 6 V DC supply and a 4 inch 8 ohm speaker.
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Demonstration Cathode Ray Oscilloscope CRO
Product Code : EL-DM-1119
The whole unit is made upon phenolic sheet with top side nicely printed.
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