If you choose to buffer with MOSFETs instead of BJTs, you need to consider the relationship between gate capacitance and instability.
If you choose to buffer with MOSFETs instead of BJTs, you need to consider the relationship between gate capacitance and instability.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
Op-amps become even more versatile if you can use them in high-current applications. In this article, we will look at a…
Op-amps become even more versatile if you can use them in high-current applications. In this article, we will look at a basic current-buffering circuit.
Invoke the power of the PID (proportional–integral–derivative controller)! The key components in this design are an…
Invoke the power of the PID (proportional–integral–derivative controller)! The key components in this design are an EFM8 microcontroller, a DAC, and the MAX31855 thermocouple-to-digital converter.
Ever wanted to find out more about Class D amplification? Here's a handy breakdown.
Ever wanted to find out more about Class D amplification? Here's a handy breakdown.
The transient response of a negative-feedback amplifier can help us to understand the nature of stability and convey…
The transient response of a negative-feedback amplifier can help us to understand the nature of stability and convey useful information about the stability characteristics of a particular circuit.
A simple “break-the-feedback-loop” simulation technique makes for convenient stability analysis, especially with…
A simple “break-the-feedback-loop” simulation technique makes for convenient stability analysis, especially with complex circuits.
The techniques discussed in previous articles can help us to understand and remedy stability problems observed in a…
The techniques discussed in previous articles can help us to understand and remedy stability problems observed in a common circuit used to amplify photodiode signals.
This article will help you to understand why the frequency response of a feedback network can seriously, and sometimes…
This article will help you to understand why the frequency response of a feedback network can seriously, and sometimes unexpectedly, degrade stability.
This article will show you a handy alternative approach to assessing stability via open-loop gain and the feedback factor.
This article will show you a handy alternative approach to assessing stability via open-loop gain and the feedback factor.
How to use frequency-domain simulations to analyze loop gain and evaluate the stability of your amplifier circuit. We…
How to use frequency-domain simulations to analyze loop gain and evaluate the stability of your amplifier circuit. We need a way to determine whether a circuit is sufficiently stable—in other words, stable enough to ensure that the circuit will perform properly despite part-to-part variations and environmental or operational conditions that affect the characteristics of the open-loop gain or the feedback network. There is where gain margin and phase margin come into play.
Why are negative-feedback amplifiers susceptible to oscillation? What is the fundamental criterion for stability? Let’s…
Why are negative-feedback amplifiers susceptible to oscillation? What is the fundamental criterion for stability? Let’s find out.
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve…
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve its input- and output-impedance characteristics.
Having introduced the general negative feedback structure, we will now demonstrate that negative feedback has a…
Having introduced the general negative feedback structure, we will now demonstrate that negative feedback has a beneficial effect on two important characteristics of amplifier circuits.
This article, the first in a series, will introduce you to the fundamental concepts required for understanding and…
This article, the first in a series, will introduce you to the fundamental concepts required for understanding and analyzing negative feedback amplifiers.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
All of our previous circuits dealt with opamps using resistors in the feedback loop. What happens when we start swapping…
All of our previous circuits dealt with opamps using resistors in the feedback loop. What happens when we start swapping out resistors for other passive components?
Part 4 in the “How to Make an Ambient Light Monitor” series
Part 4 in the “How to Make an Ambient Light Monitor” series
Part 2 in the "How to Make an Ambient Light Monitor" Series. Our smart ambient light monitor will need to digitize and…
Part 2 in the "How to Make an Ambient Light Monitor" Series. Our smart ambient light monitor will need to digitize and analyze signals from an optical detector, so it is time to explore the EFM8’s integrated analog-to-digital conversion functionality.
LTSpice possesses several features that can be used to test your design beyond simple transient analysis and AC sweeps.…
LTSpice possesses several features that can be used to test your design beyond simple transient analysis and AC sweeps. This article will go over a few advanced functions.
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