Maharashtra SSC Electronics Technology Pre-Voc/NSQF case studies
Maharashtra SSC Electronics Technology Pre-Voc/NSQF · Put your knowledge to work in context.
Electronics Technology is the pre-vocational / NSQF vocational subject offered under the Maharashtra SSC (Class 10) framework. It gives students an early, practical grounding in how electronic equipment works, how it is assembled, tested and repaired, and how a small electronics service or production unit is run. The Maharashtra SSC Electronics Technology Pre-Voc/NSQF case studies are 5 cases and about 3,610 words.
1Sorting a recovered component bag for a 9 V LED indicator
A Pre-Voc student at a Ratnagiri school is given a plastic bag of recovered components for a bench project: a red LED rated 2.0 V at 20 mA, a 9 V battery, a small stripboard, and a mixed bag containing a 1N4007 diode, a BC547 transistor, a disc capacitor printed '104', an electrolytic capacitor whose polarity stripe has faded, and loose resistors. The only resistor clearly readable is a 470 ohm (yellow-violet-brown-gold).
725 words, about 4 min2Reworking a soldered 555 timer board after cold joints and a bridge
During a school repair club session, a student solders a 16-pin DIP socket onto a single-sided PCB for a 555 timer flashing circuit. The iron is a 25 W pencil type with a chisel tip; solder is 60/40 tin-lead, 0.8 mm, with rosin flux.
711 words, about 4 min3Building a shed alarm using only NAND gates and a transistor driver
A Class 10 group is building a bicycle-shed alarm on a breadboard. The parts are a 7400 quad NAND IC, two normally-closed reed switches (one on the door, one on the window), a single-pole toggle switch labelled ARM, a 5 V active buzzer that draws 30 mA, and a 5 V regulated supply measured at 4.85 V.
731 words, about 4 min4Choosing between an unregulated adapter, an SMPS and a battery for a 12 V load
A neighbourhood repair shop is asked to sort out a customer's 12 V lighting setup. The customer uses a small black '12 V 1 A' adapter, a 5 m LED strip rated 12 V 0.6 A, and a 12 V router rated 0.5 A through a DC splitter.
689 words, about 3 min5Debugging an Arduino plant-watering prototype with relay and pump noise
An Arduino Nano-based automatic plant watering prototype is being tested for a school exhibition. A capacitive soil-moisture sensor feeds A0; a 5 V relay module switches a 12 V 0.6 A pump; the Nano and relay are powered from the USB port of a laptop, while the pump uses a separate 12 V 1 A adapter.
754 words, about 4 min