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> Ideas for Design
Ideas for Design
Efficiently Design An Op-Amp Summer Circuit
The traditional inverting op-amp summer configuration exploits the feature of a low impedance node (virtual ground) at the inverting input. The summing circuit is straightforward and easy to analyze and use, though it does have some limitations.
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Mar 17, 2017
Microcontroller Battery Monitor Circuit Needs Only One Pin
A microcontroller's internal ADC was inadequate to measure its own supply rail, so a circuit using standard discrete components was devised to do this with just one pin of the IC....
Feb 21, 2017
Compute Low-Frequency Parameters of Resistive Attenuators with Three DC-Resistance Measurements
This simple approach allows all low-frequency attenuator parameters for T pads and pi pads to be computed from just three measurements of dc resistance....
Feb 13, 2017
Interactive Graphical Interface Enhances Micro-Programmed Sequential Machine Design
The micro-programmed machine approach offers important performance features such as speed, but it is tedious and error-prone. This Visual Basic 6 GUI automates and eases the process....
Dec 15, 2016
LED-String Driver Operates from Single Cell
This basic low-power driver, based on a few standard discrete components, can supply a variety of LED types and loads....
Nov 22, 2016
High-Voltage Amplifier Extends Coulomb-Counter Range to ±270 V
Low-range current (coulomb counting) measurement is a challenge when the associated voltage is relatively high, but a configuration of standard ICs meets the requirements....
Nov 15, 2016
Flip-Flop Design Provides Frame Sync for Received Satellite Telemetry
A string of D-flip flops configured as a counter can be used to establish the initial frame synchronization needed to decode satellite-telemetry data, which has been received and demodulated....
Oct 27, 2016
Diode's Analytical Model Bridges Solid-State Reality and Physics Theory
This model yields accurate analysis of silicon diodes, avoiding the complex iterative calculations for determining voltage drop across a diode....
Oct 3, 2016
Period-to-RPM Converter Measures Very Low Frequencies
Measuring long-period signals and translating them to low-frequency RPM is challenging, but a circuit built of medium-scale ICs will do so—without a microcontroller or firmware....
Sep 12, 2016
"Cap-Drop" Approach Implements Offline Power Supply for Light Loads
A transformerless ac-dc supply can provide dc power for light loads using a capacitor's reactions as a current-limiting element....
Sep 9, 2016
Added ADC Improves Analog Square-Root Extraction Accuracy
A standard circuit for extracting the square root of an analog signal has accuracy limitations, but adding some basic circuitry in a feedback topology can increase performance at low cost....
Understanding the AirPods' Rise
Q&A: What’s New in the Wireless Audio Market?
Interview with Jawad Haider, Marvell Semiconductor
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