Differential Amplifier Basics with Formulas and Examples
Differential amplifier overview covering BJT and op-amp implementations, transfer functions, Wheatstone-bridge and light/temperature sensor examples, plus instrumentation amplifier design.
Analog Technology
Differential Amplifier Circuit Principles
Differential amplifier design: resistor divider/gain and differential input derivations, plus output offset methods to shift signals for voltage sensing and MCU inputs.
What Is an Open-Collector Output?
Technical overview of open-collector circuits, operation, transistor and TTL implementations, wiring, pull-up resistor considerations, advantages and limitations.
Roles of a Varistor in Electronic Circuits
Technical overview of varistor functions and overvoltage protection, with behavior under switching?supply spikes and practical testing methods.
Varistor Failure Symptoms and Overvoltage Protection Circuit
Technical overview of varistors: definition, zinc-oxide behavior and failure symptoms, bidirectional thyristor overvoltage protection circuit, and differences from thermistors.
What Is an IC Amplifier and Its Effect on Dynamic Range
Overview of IC amplifier types, applications, and effects on dynamic range, covering linear, power and operational amplifiers, noise, gain, saturation.
Current Transformers vs Voltage Transformers: Key Differences
Design and operation of a current transformer for high-power converter current sensing, covering turn ratio, resistor power, core/diode choices and magnetizing inductance.
Choosing Rectifier Diodes and Fast-Recovery Differences
Technical overview of rectifier diodes: selection criteria (peak reverse voltage, forward current, VF, recovery time), differences vs fast-recovery diodes and PN junction operation
Varactor Diode Drive in Typical VCO Circuits
Practical guidance on varactor diode use and biasing in VCO circuits, covering drive techniques, isolation, dual-diode topology, and RF/Q trade-offs.
What Is a Buffer Amplifier
Overview of buffer amplifiers: operation, voltage and current buffer types, impedance matching, unity-gain op-amp implementation, and common applications.
Introduction to PWM Principles and Design
Overview of PWM: definition, frequency and duty cycle, digital encoding of analog signals, and practical applications such as servo and motor speed control.
Instrumentation Amplifier Derivation and Operation
Technical overview of instrumentation amplifier design, operation and gain derivation, covering three-op-amp topology, input buffering and CMRR.
