Among the many available topologies used for power-supply converters, the flyback design offers some distinct advantages along with unique idiosyncrasies. There’s a wide and diverse array of power-supply converter topologies among which to choose, each with tradeoffs in their various performance attributes and cost. The flyback design is a converter approach which has been used […]
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Microcontroller Top Talks in March 2019 on EDABoard.com
Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around microcontrollers. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com. Counting pulses from external source PIC16F877a – I am planning to do a very simple LED fading using atmega328p via Atmel Studio. […]
Filters, Part 1: Analog, switched, and digital filters
Filters are essential functions in most circuits and systems; as frequencies extend into the multi-GHz range, surface acoustic wave (SAW) and bulk acoustic wave (BAW) filters are needed to meet the design objectives. An engineer I worked with (and whose name I have forgotten) once remarked to about electronic filters (and he was serious): “like […]
Working with higher voltages, Part 1: Voltage boosters
Whether for efficiency or due to the device physics, many applications require voltages ranging in the tens, hundreds, or even thousands of volts; the circuits which produce these voltages start with basic charge pumps and extend to voltage multipliers with simple schematics but many subtleties. Lower-voltage circuitry is the trend, with ICs and designs operating […]
Analog Top Talks in January 2019 on EDABoard.com forums
Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around analog ICs and analog design. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com. How to design a thermostat without microcontroller – I want to have an electronic thermostat when the temperature reaches to […]
Analog computation, Part 2: When and how
Analog circuits based on op amps can be used to implement mathematical functions and are still useful in many applications due to their unique attributes. Part 1 of this FAQ looked at the basic need for and virtues of analog-based computational circuits. Part 2 looks at some implementation specifics and considerations. Q: What are the […]
Analog computation, Part 1: What and why
Analog circuits based on op amps can be used to implement mathematical functions and are still useful in many applications due to their unique attributes. Say the word “computer” or “computation” and the instinctively associated concept is “digital.” That makes sense since most computers and computation functions are implemented with general digital logic, specialized arithmetic […]
Synthesized tuning, Part 2: Advanced synthesizers and performance
Part 1 of this FAQ looked at the basic issues and topologies related to the challenge of frequency synthesis. Part 2 continues with advanced approaches and their attributes, as well as general concerns when choosing a synthesizer. Q: Are there other digitally-controlled synthesizer topologies? A: Yes. A widely used one is called the classical phase […]
Synthesized tuning, Part 1: Basic frequency-synthesizer principles
Frequency synthesizers of various architectures, made possible by IC technology, are a key building blocks for applications which must accurately tune multiple channels, and hop from one frequency to another while using a single signal source such as a crystal oscillator. When you want to tune a desired radio station — AM or FM — […]
Power management ICs, part 2: PMIC implementations
The power management IC (PMIC) is often a vital part of the lower-voltage DC subsystem, as circuits have multiple power rails with tight individual specifications as well as mandated relationships among them. Part 1 of this FAQ discussed the need for, PMICs and their general characteristics. Part 2 now looks at specific ICs which implement […]