WBCHSE HS Vocational Electronics case studies
WBCHSE HS Vocational Electronics · Put your knowledge to work in context.
The WBCHSE Higher Secondary Vocational Electronics course is a two-year vocational stream subject offered under the West Bengal Council of Higher Secondary Education, intended for Class XI and XII students who want a practical, trade-oriented qualification in electronics rather than a purely academic science route. It suits learners aiming at technician roles, repair and service work, industrial wiring and maintenance, or further study in electronics and instrumentation, and it is examined through a mix of theory papers, practical/laboratory assessment and project work rather than theory alone. The WBCHSE HS Vocational Electronics case studies are 5 cases and about 3,094 words.
112 V Floodlight Voltage Drop on a Long Workshop Run
A vocational trainee is installing a 12 V, 60 W LED floodlight at the far end of a workshop. The 12 V, 10 A SMPS is mounted 18 m away along the cable route.
582 words, about 3 min2Bridge Rectifier Ripple and the 2200 µF Filter
A trainee assembles a 12 V, 1 A DC supply for a small motor load. The parts are a 230 V/12 V transformer, a 1 A bridge rectifier, a 2200 µF/25 V electrolytic capacitor and a 12 Ω 50 W load resistor.
603 words, about 3 min3CE Amplifier Gain, Bypass Capacitor and Clipping
A trainee builds a single-stage common-emitter preamplifier with a BC547B. The design brief requires a stable voltage gain of about 5 and an output that can drive a 10 kΩ load without clipping.
617 words, about 3 min4TTL Alarm Logic with Floating Sensor Inputs
A trainee wires a workshop intruder alarm using a 74LS32 quad 2-input OR gate and a 74LS08 quad 2-input AND gate. The sensors are door switch D, window switch W and PIR sensor M.
679 words, about 3 min57805 Regulator Dropout, Heating and a Series Resistor
A trainee builds a 5 V, 0.8 A supply for a microcontroller board. The parts are a 230 V/9 V transformer rated 1 A, a bridge rectifier, a 2200 µF filter capacitor, and a 7805 regulator bolted to a clip-on heatsink with θSA = 50 °C/W.
613 words, about 3 min