Public learning track
BJT Low-Side Switch Design and Interfacing
11th Grade · Technology · UK A-Level
8 lessons
Goal
Design, calculate, and interface low-side NPN bipolar junction transistor switches for resistive and inductive loads controlled by digital logic.
8 lessons
0 of 8 done
- 1NPN and PNP Transistor Terminal Structure and Biasing StatesUp nextStart
- 2Transistor Cutoff and Saturation Modes for SwitchingPremiumNot started yet
- 3Base-Emitter Saturation Voltage and Collector-Emitter Saturation VoltageNot started yet
- 4Current Gain (hFE) and Forced Gain for Hard SaturationNot started yet
- 5Calculating Base Resistor Values for NPN Transistor SwitchesNot started yet
- 6Pull-Down and Pull-Up Base Resistors for Defined Switching StatesNot started yet
- 7Interfacing NPN Switches to Logic Outputs and MicrocontrollersNot started yet
- 8NPN Transistor Relay and Solenoid Driver DesignNot started yet
Curriculum Framework
11th Grade · Technology · UK A-Level
1
7 lessons
Diode Fundamentals and LED Circuit Design
Analyse silicon diode and LED characteristics to calculate current-limiting resistors and design multi-LED and display driver circuits.
2
6 lessons
Diode Circuit Applications and Specialised Diodes
Implement diodes in polarity protection, inductive suppression, and logic gates, while evaluating specialised devices like Schottky diodes and photodiodes.
3
7 lessons
Zener Diode Fundamentals and Shunt Voltage Regulators
Analyse Zener diode characteristics and calculate component parameters for robust DC shunt voltage regulators under fluctuating load and line conditions.
4
5 lessons
Diode Waveform Clipping, Clamping, and Protection Circuits
Design and evaluate diode and Zener circuits for AC signal shaping, waveform clipping, reference voltages, and sensitive input overvoltage protection.
5
8 lessons
BJT Low-Side Switch Design and Interfacing
Design, calculate, and interface low-side NPN bipolar junction transistor switches for resistive and inductive loads controlled by digital logic.
6
4 lessons
Advanced BJT Switching Topologies and Dynamics
Design high-side PNP and Darlington switching circuits while evaluating switching transition speeds, storage delays, and power dissipation.
7
7 lessons
MOSFET Switching Fundamentals and Gate Drive Design
Master N-channel MOSFET switching characteristics, conduction power loss calculations, logic-level gate interfacing, and gate charge dynamics.
8
6 lessons
Advanced FET Switching Topologies and Power Control
Design high-side switching, complementary stages, inductive load protection, and PWM power control circuits using MOSFETs and JFETs.