Designing in MOSFETs for safe and reliable gate-drive operation
Basic Electronics

Designing in MOSFETs for safe and reliable gate-drive operation

The MOSFET gate-source threshold voltage (VGS-th) and maximum gate-source voltage(VGS-max) are key parameters that are critical to the reliable operation of MOSFETs. The threshold voltage represents the voltage at which the MOSFET starts to turn on, whilst the maximum gate-source...

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Free Elektor Circuit – An NE555 Watchdog Timer
Basic Electronics

Free Elektor Circuit – An NE555 Watchdog Timer

from an Idea by Wolfgang Borst (Germany) Virtually every modern microcontroller has a built-in watchdog. It prevents the microcontroller ‘hanging’ which may be the result of a programming error or an unforeseen operating condition, where, for example, the program becomes trapped in...

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Give The Gift Of Real-World Coding Skills To Tweens This Holiday Season
Basic Electronics

Give The Gift Of Real-World Coding Skills To Tweens This Holiday Season

Let’s Start Coding Offers Customizable Electronic Kits That Teach Kids 8-12 Real Code in a Hands-on Way Remember how much fun you had with chemistry sets from your childhood? You made things blow up and glow and learned about chemistry in the process. Let’s Start Coding is the...

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Ferrite bead demystified from Analog Devices
Basic Electronics

Ferrite bead demystified from Analog Devices

App note from Analog Devices hinting for proper selection of ferrite bead for you applications. An effective method for filtering high frequency power supply noise and cleanly sharing similar supply rails is the use of ferrite beads. A ferrite bead is a passive device that filters high...

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PSRR of low dropout voltage regulators
Basic Electronics

PSRR of low dropout voltage regulators

Here’s an app note about PSRR of LDO from Microchip. The Power Supply Rejection Ratio is the ability of a device, such as a Low Dropout Voltage regulator, to reject the various perturbations that can be found in its input supply rail by providing a greatly attenuated signal at the...

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App note: How to use power inductors
Basic Electronics

App note: How to use power inductors

A great guide from TDK about power inductors used in DC-DC converters. As electronic devices become more advanced, the power supply voltage of LSIs used in them is lowered, so their power consumption can be reduced and their speed increased. However, a decrease in the power supply...

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Bootstrap Circuit in the Buck Converter explained
Basic Electronics

Bootstrap Circuit in the Buck Converter explained

This application note explains the step-up circuit using a bootstrap capacitor. In buck converters, this circuit is used when the high-side switch is the N-ch MOSFET. The configuration of the circuit in proximity to a buck converter depends on the polarity of the high-side switch.When...

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How to select the right thyristor (SCR) for your application
Basic Electronics

How to select the right thyristor (SCR) for your application

SCR fundamentals discussed in this app note from STMicroelectronics. For an Introduction to Thyristors check here. This document provides some guidelines about how to select the right thyristor, also referred to as “SCR”, according to the different applications. Some very specific...

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