Simple circuit indicates a low battery
Basic Electronics

Simple circuit indicates a low battery

James Wood @ edn.com writes: The Design Idea in Figure 1 indicates a low-battery condition in an audio test instrument that is powered by four AA cells. As the instrument was otherwise an all-discrete design, this same approach seemed more in keeping with the spirit of the project...

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How to Read Your First Autodesk EAGLE Schematic
Basic Electronics

How to Read Your First Autodesk EAGLE Schematic

Back to basics. Here is a tutorial on autodesk.com blog on how to read schematics: The schematic forms the building block of every electrical circuit, and even if you aren’t designing one yourself, knowing how to read one is invaluable. And with some schematic reading knowledge in...

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PNP Transistor – How Does It Work?
Basic Electronics

PNP Transistor – How Does It Work?

The PNP transistor is a mystery to many. But it doesn’t have to be. If you want to design circuits with transistors, it’s really worth knowing about this type of transistor. by Oyvind @ build-electronic-circuits.com PNP Transistor – How Does It Work? -...

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Sensing current on the high side
Basic Electronics

Sensing current on the high side

Michael Dunn @ edn.com writes: At their heart, the majority of DC current sense circuits start with a resistance in a supply line (though magnetic field sensing is a good alternative, especially in higher-current scenarios). One simply measures the voltage drop across the resistor...

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LC-04 4 Channel Logic Converter 3.3V – 5.0V
ArduinoBasic ElectronicsMiscellaneous

LC-04 4 Channel Logic Converter 3.3V – 5.0V

If you have ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The LC-04 bi-directional logic level converter is a small device that safely steps down 5V signal to 3.3V and steps up 3.3V to 5V at the same time. In this instructable, mybotic explained...

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Load switch with self-resetting circuit breaker
Basic Electronics

Load switch with self-resetting circuit breaker

Anthony Smith has designed a simple load switch using two transistors and some resistors. The simple current-limiting load switch shown in Figure 1 will be familiar to most readers. In this circuit, a high level signal applied to the input switches on MOSFET Q2, which energizes the...

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How to Choose a Connector
Basic Electronics

How to Choose a Connector

Sanket Gupta @ octopart.com discuss on how to choose a connector. He writes: Continuing our series about choosing parts, inspired by the latest version of the Common Parts Library, let’s take a close look at how to find and select connectors. In this blog, we will explain all the...

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Thermal design: Get the heat out of the electronics
Basic Electronics

Thermal design: Get the heat out of the electronics

Paul Rako@ edn.com discuss about thermal design in electronics and how to design your board to dissipate it effectively. If you have high-powered LEDS, or a power supply, or are trying to control larger motors, you have to get a lot of heat out of your circuit boards. The classic way...

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