Capacitor for audio high-pass filter – I’m working on an audio circuit that will run from a 9V battery and requires a high pass filter, to reduce 50-60Hz noise/hum. The pass band is specified as 180Hz to 2400Hz. The present design has a 2nd order filter and the hum is unacceptably high. What kind of capacitor is […]
Analog ICs
What Will 2015 Bring? A New Electronics System Design Imperative
By Chi-Ping Hsu A new year approaches and with it comes fresh new challenges for design engineering teams and for us as key ecosystem partners. The biggest challenge that we face as an industry is one that has begun to form in recent years and will fully flower in the coming year: How do we […]
Top analog threads this week from EDAboard.com
Gain and phase margin for transimpedance amplifier – I am designing a transimpedance amplifier with variable resistive feedback gain. I have a problem with simulating gain and phase margin. For the test input signal I am using an AC current source and perform an AC simulation. When I plot the magnitude, I get a transimpedance […]
Quiz Day Friday: Electronics and Radio
Welcome — or welcome back — to Quiz Day Friday and Quiz V6.0: Electronics and Radio. If this is your first Quiz Day Friday, then you might want to catch-up on the five previous quizzes: Quiz V1.0 on General Electronic and Electrical Engineering Quiz V2.0 on Common Engineering Abbreviations Quiz V3.0 Electronic and Electrical Engineering – Intermediate […]
Quiz Day Friday: Computer History
Welcome back to Friday and Quiz V4.0: Computer History, a real blast from the past . If this is your first Quiz Day Friday, then you might want to check out the three previous quizzes: Quiz V1.0 on General Electronic and Electrical Engineering Quiz V2.0 on Common Engineering Abbreviations Quiz V3.0 Electronic and Electrical Engineering – […]
Energy management analog front end targets power metering
Microchip Technology Inc., a leading provider of microcontroller, mixed-signal, analog and Flash-IP solutions, today announced the completion of its high-accuracy, 1-8 channel, single and poly-phase MCP391X energy-measurement Analog Front End (AFE) family. The new MCP3919 and MCP3912 members integrate three and four channels of 24-bit, delta-sigma Analog-to-Digital Conversion (ADC), respectively, with industry-leading accuracy of 93.5 […]
Smart meter transceiver works on dual bands
Atmel Corporation, a global leader in microcontroller (MCU) and touch solutions, announced a new family of wireless transceivers. Atmel’s AT86RF215, the first sampling device, is the industry’s first dual-band sub-1GHz / 2.4GHz transceiver compliant to IEEE 802.15.4g-2012 and ETSI TS 102 887-1. Expanding the Atmel SMART metering portfolio, the new devices include the AT86RF215M, a […]
Top analog threads this week from EDAboard.com
Buck-boost converters – I am designing a buck-boost circuit but the values of the L, R, and C are hard to get. Anybody have an equation for this? My project has a variable input from 6 to 20 V and a 12-V output. Read more. Need help with circuit design – I need a relay […]
Amplifier Theory: Design & Troubleshooting, Part 1
By unclejed613, “Well-Known Member” on Electro-Tech-Online. No matter how “digital” things get in modern consumer electronics, when it all comes down to it, after all of the digital magic is done, air must be moved for you to hear the results. An analog voltage and current must be applied to some type of device that displaces air. […]