A terminal block provides a secure electrical and mechanical connection between conductors. This guide explains how to select terminal blocks based on connection technology, current and voltage ratings, conductor size, mounting method, environmental conditions, and potential failure modes.
Technical Guides
Latest Posts
A working reference for the STM32F103 line: the four density classes and what each gives you, why USB and CAN can't run together, the LQFP48 pin functions, how the Blue Pill is wired, and how to spot the clones on cheap boards.
What is CNC turning? This digital manufacturing technology, different from CNC milling in a few important ways, is used to make rounded or cylindrical parts with a high level of precision.
This article is a practical PLC programming guide covering the five IEC 61131-3 languages, the scan cycle that governs how your code actually runs, ladder and structured text examples, and the mistakes that cost engineers the most commissioning time.
A PEM fuel cell converts hydrogen and oxygen into electricity at around 80 degrees C, with water and heat as the only products. This guide covers electrochemistry, layer materials, efficiency limits, and cost and durability to help you understand the practical applications of this technology.
STM32 vs ESP32 compared on architecture, Wi-Fi, power, peripherals, toolchains, safety, and longevity. Current 2026 specs from vendor datasheets, plus a decision table.
GD&T is the symbolic language engineers use to state exactly how much a part can vary and still work. This guide covers the basics.
This article examines microcontroller vs microprocessor architectures at the system level, explaining how their hardware resources, boot requirements, software stacks, and application demands differ.
This article explains what is a PLC, what's inside it, how the scan cycle works, which programming languages the current IEC standard defines, and how to choose the right controller for your application.
A Schmitt trigger is a circuit that converts slow or noisy inputs into clean digital signals using two switching thresholds. This guide explains hysteresis, op-amp and transistor designs, equations, real 74HC14, CD40106B, and 555 timer examples, and common design mistakes.
This guide covers the true position formula, how to read the feature control frame, and how MMC and LMC generate bonus tolerance.
An STM32 microcontroller selection guide built as a working method: narrowing 1,644 parts down to one order code, organized by the constraint that actually drives your design rather than by part number.
A shunt resistor turns a current you cannot measure directly into a small voltage you can. This guide covers how shunt resistors work, how to size one, why manganin dominates precision designs, and where real measurement errors come from.
This article explains the ESP32 pinout, including GPIO, ADC, DAC, PWM, UART, SPI, and I2C pins; safe and reserved GPIOs; strapping pins; board differences; power limits; and practical design considerations.
H7 tolerance is the default hole class in the ISO system of limits and fits. This guide explains why H7 is useful for manufacturers.
VCXO (voltage-controlled crystal oscillator) is a precision timing device that enables fine frequency control. This article explains how VCXOs work, their tuning range, Kv, key specifications, circuit design, applications, alternatives, and how to select the right device.
An explainer of how the STM32 Microcontroller family is organized, what the underlying Arm Cortex-M cores actually give you, and how the development ecosystem works.
A practical guide to press fit tolerance, including fit classes, interference calculations, and assembly methods.
How microstepping works in stepper motors, the incremental torque cost of each resolution, and why finer microsteps do not improve positioning accuracy.
How closed-loop stepper motors use encoder feedback to eliminate missed steps, plus driver design, NEMA sizing, and when to choose a servo instead.
This guide covers what is inside a servo drive, how its nested servo loops behave, how EtherCAT and CANopen interfaces change the architecture, and how to size, tune, and safely commission one.
This article explains how a servo motor works, its construction, control loops, encoder and resolver feedback, AC and DC types, sizing math, and tuning fixes.
What a programmable automation controller is, how PACs are built and programmed, and how to choose between a PLC and a PAC.
This article explains how load cells work, the main types, what accuracy specs and OIML/NTEP classes mean, and best practices for sizing, wiring, and installation.
An OCXO maintains its quartz crystal at a controlled temperature for exceptional frequency stability. This guide covers OCXO design for timing engineers, including oven systems, temperature-control loops, crystal selection, specifications, variants, applications, and emerging trends.
