Tamil Nadu HSE First Year Basic Electronics Engineering case studies
Tamil Nadu HSE First Year Basic Electronics Engineering · Put your knowledge to work in context.
Basic Electronics Engineering is a vocational/elective subject offered in the first year of the Tamil Nadu Higher Secondary (+1) curriculum for students who choose the electronics stream alongside Physics, Chemistry and Mathematics or related combinations. It suits candidates who want a practical grounding in how components behave before moving on to Class XII and then to diploma or degree programmes in electronics, electrical or instrumentation engineering, or into technician roles. The Tamil Nadu HSE First Year Basic Electronics Engineering case studies are 5 cases and about 3,748 words.
1Loaded Voltage Divider and a Low-Sensitivity Voltmeter
In a first-year lab a student must derive 6.0 V from a regulated 12.0 V supply to feed a sensor whose input resistance is 100 kΩ. The student builds a divider with R1 = 10 kΩ from +12 V to the output node and R2 = 10 kΩ from the output node to ground, both 5% carbon film.
659 words, about 3 min2Bridge Rectifier That Ripples at 50 Hz
A student builds a power supply using a 12 V RMS transformer, a four-diode bridge made from 1N4007 diodes, a 1000 µF/25 V electrolytic capacitor, and a 100 Ω 5 W load resistor. With no load, the output is about 15.5 V DC.
740 words, about 4 min3Common-Emitter Bias Shift and Asymmetric Clipping
A student designs a single-stage common-emitter amplifier with VCC = 12 V, R1 = 47 kΩ from VCC to base, R2 = 10 kΩ from base to ground, RC = 3.3 kΩ, RE = 1 kΩ, and a silicon NPN transistor with hFE ≈ 200. The design target is VE ≈ 1.4 V, VC ≈ 7.4 V and VCE ≈ 6.0 V.
700 words, about 4 min474LS Output Driving CMOS Inputs and an LED
In a breadboard project, the output of a 74LS00 NAND gate is required to drive three 74HC00 inputs and to light an LED as a 'logic 1' indicator. The supply is 5.0 V.
776 words, about 4 min5Cold Joints on a Ground Plane
During a practical class a student solders a small LED flasher board. The board has a large copper ground plane connected to the emitter of a TO-92 transistor and to the negative pad of a 100 µF electrolytic capacitor.
873 words, about 4 min