Introduction A precision measurement system can perform accurately during laboratory testing yet begin producing inconsistent readings after months or years in real-world operation. This scenario is common across industries where measurement accuracy directly impacts product quality, process control, safety, and regulatory compliance. Many engineering teams initially suspect software errors, sensor degradation, ADC inaccuracies, or poor calibration procedures. However, the ac

In the world of precision electronics, performance is often judged by numbers printed on a datasheet. Engineers compare tolerance, temperature coefficient (TCR), power rating, and reliability figures before selecting components for mission-critical applications. While these specifications are essential, one important question frequently goes unanswered: What happens after years or even decades of operation? Many electronic components are characterized using accelerated testin

When Accuracy Isn't Enough: The Hidden Parameter Behind Reliable Electronics Modern electronic systems are expected to perform with the same level of precision on the day they are installed as they do years later. Whether it is industrial automation, medical equipment, aerospace electronics, laboratory instruments, or high-end test and measurement systems, users expect consistent performance without frequent recalibration. Yet many engineers focus primarily on one specificati

In precision electronics, current-source accuracy is often associated with sophisticated control loops, high-resolution digital-to-analog converters (DACs), and low-noise operational amplifiers. However, real-world performance frequently depends on a less obvious component: the precision resistor. This case study examines how replacing a conventional current-sense resistor with a VPR221Z Z-Foil resistor enabled a high-accuracy current-source design to achieve ultra-low drift,

As power electronics continue to evolve toward higher efficiency, greater power density, and tighter control requirements, accurate current measurement has become increasingly critical across industries such as electric mobility, industrial automation, renewable energy, battery management, and precision instrumentation. However, engineers frequently encounter a persistent challenge: unexplained measurement errors in low-resistance current sensing circuits despite using high-q

As electronic systems continue to evolve toward higher sensitivity and greater autonomy, measurement accuracy has become a defining performance parameter rather than a desirable feature. In sectors such as medical electronics and humanoid robotics, signal levels often exist in the microvolt range, where even seemingly insignificant electrical phenomena can compromise system integrity. One frequently overlooked contributor to measurement error is stray voltage generated by the

As semiconductor devices continue to shrink in size while increasing in complexity, the margin for measurement error inside production environments becomes extremely small. What once appeared to be negligible electrical drift can now directly influence wafer yield, device reliability, calibration stability, and even long-term product quality. A thought provoking industry conversation, within the precision resistor community highlighted an increasingly important issue inside s

Introduction In precision electronics, reliability is rarely determined by a single dramatic failure. More often, performance degradation begins subtly, for example: a small thermal drift (e.g., 5–50 ppm/°C shift), an unstable reading, or calibration values that gradually move outside acceptable tolerances. In mission-critical systems, these seemingly minor deviations can eventually lead to inaccurate measurements, reduced operational efficiency, product recalls, or complete

In the world of precision electronics, resistor selection is often treated as a simple specification exercise. Engineers compare tolerance, nominal resistance, power rating, and Temperature Coefficient of Resistance (TCR), then assume the system will maintain accuracy over time. However, in real-world industrial and instrumentation environments, initial specifications alone rarely determine long-term performance. What separates reliable systems from unstable ones is not day o

In modern electronics, pulse performance is no longer a niche requirement. From industrial automation and aerospace systems to medical instrumentation, EV platforms, defense electronics, and precision sensing applications, engineers increasingly rely on components that can withstand rapid, repetitive electrical pulses without compromising accuracy or stability. One question continues to surface among design engineers and system architects: “Do you have graphs showing Pulse Du

Introduction Electrostatic discharge (ESD) is one of the most underestimated causes of latent electronic failure in modern systems. Unlike catastrophic electrical overstress events that immediately destroy components, ESD damage is often silent, microscopic, and delayed. Circuits continue to function after exposure, only to experience instability, drift, or complete failure weeks or months later. A recent demonstration shared by VPG, conceptualized by Yuval, highlighted this

In an era where electronics are often designed around rapid product cycles, planned upgrades, and aggressive cost optimization, true long-term reliability has become increasingly rare. Yet every so often, a real-world example emerges that reminds the engineering community what “designed to last” genuinely means. A recent post by VPG, conceptualized by Yuval, showcased exactly such a case. The post highlighted a measurement instrument originally built in the early 1980s that c

The pursuit of precision in the world of analog electronics has always been shaped by one fundamental challenge: maintaining stability under real-world operating conditions. While laboratory measurements may initially demonstrate excellent accuracy, long-term system performance depends on how electronic components behave across temperature changes, aging cycles, environmental stress, and operational drift. This challenge becomes especially critical in applications such as med

Abstract In the world of force and weight measurement, elegance often hides beneath simplicity. The S-Beam load cell—frequently described as rugged, cost-effective, and versatile—has endured decades of industrial use not by accident, but through deliberate mechanical and strain measurement design choices. This case study explores the engineering principles behind the S-Beam load cell, focusing on its shear web architecture and diamond-shaped shear strain gage configuration. D

1. Executive Summary Commercial trucking operates at the intersection of safety, compliance, and profitability. While total vehicle weight has long been regulated and monitored, weight distribution particularly off-center loading—remains an under-measured risk factor. An unevenly loaded truck can meet gross weight limits and still pose a significant rollover or jackknife hazard. This case study, inspired by an industry discussion initiated by Yuval Hernik, examines whether st

1. Introduction The evolution of robotics from repetitive, pre-programmed machines to adaptive, intelligent systems has created a fundamental demand: accurate, stable, and compact force feedback. Modern robotic grippers, collaborative robots (cobots), and precision automation systems must not only “see” their environment but also feel it. This case study, inspired by the work and insights shared by Yuval Hernik, explores a critical innovation in strain gage technology: the in

1. Introduction Flow measurement has always balanced two competing needs: accuracy and simplicity. While advanced flow technologies such as ultrasonic, Coriolis, or thermal mass meters deliver excellent performance, they often come with high cost, complex installation requirements, and sensitivity to environmental conditions. In contrast, mechanical flow measurement concepts—some dating back decades—continue to prove their value when combined with modern sensing technologies.

Abstract As strain and force measurement applications continue to migrate toward compact, embedded, and digitally connected systems, traditional strain gage architectures are increasingly challenged by space constraints, wiring complexity, noise susceptibility, and integration overhead. This case study examines the evolution and practical implementation of miniature strain gage sensors integrated with custom flex circuits and embedded electronics, an approach that significant

1. Introduction Strain gage–based force and torque sensors have long been the gold standard for precision measurement across industries such as automotive testing, aerospace, industrial automation, and materials research. Despite decades of refinement, one aspect of sensor manufacturing has remained stubbornly complex: wiring. As highlighted by Yuval Hernik, traditional strain gage sensor assembly relies heavily on manual processes—cutting, stripping, soldering, routing, and

Abstract Strain gage measurements are often assumed to be limited by sensor quality, installation technique, or signal conditioning. However, a frequently overlooked source of significant measurement error lies not in the gage itself, but in the leadwire configuration connecting the gage to the measurement instrument. This case study, authored by Yuval Hernik, examines how improper wiring—specifically the use of a two-wire connection in quarter-bridge strain gage applications