Alternative Uses of Packaging in Electronics
Dennis Feucht 10/3/2017 Post a comment
In an era of collapsing economies, waning affluence, and too much garbage amid scarcity, a characteristic that is part of the engineering character - resourcefulness - is due to come back in vogue, as we are challenged to optimize the use of limited resources.
The Shape of Electronics Expertise
Dennis Feucht 9/11/2017 2 comments
As we progress in our acquisition of electronics skills, we occasionally reflect on the “shape” that our knowledge and skills are taking. This article is an overview of basic decisions that “sculpt” our know-how and some of the consequences of the shape of it.
Common-Base Bypassing and How It Affects CB Frequency Response
Dennis Feucht 7/8/2016 3 comments
The common-base (CB) BJT configuration is the second stage of cascode amplifiers. It is useful as a voltage translator to the high side of an amplifier with a large voltage range. This article addresses the question of how the RB, CB combination at the base node affects the frequency response.
Book Review: Linear Circuit Transfer Functions
Dennis Feucht 6/21/2016 Post a comment
Circuits can often be compartmentalized into stages with only one or two reactances in each stage. These circuits can be formidable to analyze for engineers unaccustomed to using much math, yet Basso’s book presents higher-level circuit theorems or methods that reduce their apparent complexity.
Simple μ C-Based A/D Converters, Part 2: Σ -Δ
Dennis Feucht 6/14/2016 Post a comment
Microcontrollers (μCs) often contain a comparator that can implement a precise analog-to-digital (A/D) converter (ADC) with the addition of only an external resistor and capacitor. It is a charge-balancing or Σ- Δ
Simple μC-Based A/D Converters, Part 1
Dennis Feucht 6/3/2016 1 comment
One useful dynamic application of μCs is as analog-to-digital converters (ADCs). ADCs over the years have gone from complete DVMs as instruments to embedded subsystems, to a few components. This two-part article presents some minimalist techniques for implementing μC-based ADCs.
The Bootstrapped Astable Multivibrator
Dennis Feucht 5/17/2016 12 comments
Some time ago, I reverse-engineered a low-cost inverter made by Vector Mfg. (now Black & Decker). It uses a classic 2-BJT astable multivibrator (AMV) but with a circuit design twist, as shown below. What is the purpose of R6?
Ever wonder how we got to 5G? Many earlier discoveries, experiments analyses led to wireless communication, but let’s look at what helped spur wireless radio 90 to 100 years ago.
There are several features of current-feedback fully differential amplifiers that set them apart from voltage feedback fully differential amplifiers. This article will detail several of these differences and how they impact circuit design
To understand the proliferation of power domains and supplies, we need to take a trip along ADC history lane. Back in the days when the ADC was just that, an ADC, the sample speeds were slower—in the 10s of MHz—and the amount of digital content was small to nonexistent.
Hard copy electronic catalogs: Be bold, go old, and succeed