Discrete Component Trainer Circurt Board
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Product Code : SCL-EAE-12039
Discrete Component Trainer Circurt Board (SKU SCL-EAE-12039) is a basic electronics trainer with pre-mounted transistors, diodes, Zener diodes, resistors and capacitors wired to 2 mm sockets, powered by built-in regulated +5 V and +12 V supplies. Students use it to study individual components and simple analog circuits without loose breadboard wiring in engineering, diploma and vocational labs. Science Lab Supplies manufactures the board at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and supplies institutions, tender contractors and distributors directly.
Specifications
The complete specification is in the table below. In short, the board runs on 220–240 V AC, provides regulated +5 V and +12 V at 500 mA, and carries BC547 NPN and BC557 PNP transistors, 1N4007 diodes, resistors from 100 Ω to 100 kΩ and capacitors from 0.1 µF to 1000 µF in an ABS shell.
| Specification | Value |
|---|---|
| SKU | SCL-EAE-12039 |
| Mains input | 220–240 V AC, 50 Hz, single phase |
| Regulated DC outputs | +5 V at 500 mA and +12 V at 500 mA |
| Supply protection | Fully regulated, short-circuit protected |
| AC terminals | Onboard transformer terminals for rectifier circuits |
| NPN transistor | BC547 |
| PNP transistor | BC557 |
| Rectifier diodes | 1N4007 |
| Other semiconductors | Zener diodes |
| Resistors | Carbon film, 100 Ω to 100 kΩ |
| Capacitors | 0.1 µF to 1000 µF, including electrolytic types |
| Component mounting | Permanently mounted, pre-selected components |
| Sockets | 2 mm insulated banana safety sockets |
| Circuit board | Multi-layer glass epoxy PCB |
| Enclosure | Impact-resistant ABS plastic base shell |
| Patch cords | 20 multi-coloured 2 mm banana cords (red, black and yellow) |
| Power cable | Detachable 3-pin AC mains cable |
| Manual | English operations manual with component layouts and experiments |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Discrete Component Trainer
Each component block is patched with 2 mm cords, so students can build a rectifier, a transistor amplifier or an RC filter quickly and then probe it. The board suits B.Tech and diploma basic electronics, B.Sc. electronics practicals and ITI electronics mechanic training on semiconductor devices.
- Diode work: characteristics of silicon and Zener diodes, and a half-wave rectifier from the AC terminals.
- Transistor circuits: common-emitter and common-base layouts with the BC547 and BC557.
- RC networks: low-pass and high-pass filter response, driven from a Bench Signal Generator.
- Checking resistor values up to 20 kΩ with a Digital Ohmmeter.
Standard Scope of Supply
Each board comes with the core console, 20 multi-coloured 2 mm banana patch cords in red, black and yellow, a detachable 3-pin AC mains cable and an English operations manual showing component layouts and experiments. A multimeter or oscilloscope can be quoted separately.
Packing, MOQ and Lead Time
A single board or a full electronics lab set can be quoted. Science Lab Supplies lists the packing, delivery time and price for that quantity on the quotation, and meters, signal generators or other trainers can be included on the same document.
As an Importer-Exporter Code holder, Science Lab Supplies is able to ship to buyers in Uganda, the UAE, Saudi Arabia, Oman, the Philippines and Nepal. Get in touch via the contact page, collect items in the enquiry cart, or read about tender supply on the lab tender page.
Frequently Asked Questions
Can external components be tested on this board?
The board uses permanently mounted, pre-selected components to keep its circuits protected. External parts are better studied on a separate breadboard, such as the one on the Analog & Logic Circuit Training Board.
Which transistors and diodes are fitted?
The panel carries a BC547 NPN transistor, a BC557 PNP transistor and 1N4007 diodes, along with Zener diodes, carbon film resistors from 100 Ω to 100 kΩ and capacitors from 0.1 µF to 1000 µF.
Does it need an external power supply?
No. Built-in regulated, short-circuit-protected +5 V and +12 V DC supplies, each rated 500 mA, run directly from 220–240 V AC mains, so no separate bench supply is needed.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The trainer is assembled in its factory in Saha, Ambala, India, which also prepares the quotation, so buyers deal with the maker directly.
Related Electronics Trainers and Meters
These items sit beside a discrete component trainer on an electronics bench: another trainer of the same type, op-amp and digital trainers for the next topics, and instruments for checking values. All of them can be added to a single quotation.
- Discrete Component Trainer Circuit Board — board for practical study of discrete components and basic circuit behaviour.
- Operational Amplifier Trainer DC Power Supply — ±15 V at 500 mA with two 741 op-amps.
- Operational Amplifier Trainer IC Regulated D.C. Power Supply — IC-regulated ±15 V with metal-film resistors.
- Digital IC Trainer with Digital Voltmeter — 1660-point breadboard and a 0–20 V voltmeter.
- Digital Multimeter — voltage, current and resistance ranges plus diode and continuity tests.
- Oscilloscope — 320 x 240 colour display, 2 MB memory and rechargeable battery.
- Resistance Substitution Box — 10 Ω to 1 MΩ in 24 steps, 5% tolerance.
Browse the full Electrical and Electronics range, the Lab Meters range for measuring instruments, or all physics lab equipment.
Last updated: 9 October 2026
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