A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Act of measuring voltage
Questions about programming parts (FPGAs, Flash, etc.) Many software programming questions should be asked instead on Stack Overflow.
AC power with three legs run 120 degrees out of phase
An LED driver is a self-contained power supply that controls the amount of current and voltage supplied to an LED light. An LED constant current driver monitors the loop current of each LED and automa…
IR is electromagnetic radiation with longer wavelengths than those of visible light at 0.74 micrometres (µm) to 300 µm, which is extends the nominal red edge of the visible spectrum.
687 questions
A popular manufacturer of FPGAs (Field Programmable Gate Arrays) and CPLDs (Complex Programmable Logic Devices).
Amperage is the disfavored term for "current:": the strength of an electric current in Amperes (Sometimes shortened to Amps).
681 questions
A DAC is a Digital to Analog Converter.
LED Strips come in two designs, both on Flex Printed Circuits (FPC). 1. Simple LED + Resistor versions, typically with multiple parallel segments of three LEDs with matching resistors. 2. Digitally co…
for circuits that only contain passive components, such as resistors, capacitors, and inductors. This includes RC, RL, LC, and RLC circuits.
668 questions
Layout is the process of designing a PCB including placement of parts and routing of traces.
Involving or pertaining to a circuit or device that is intended to be operated with cells or batteries (as opposed to mains power, for example).
664 questions
A circuit that converts a signal from one form to another. Analog to digital, Digital to analog, Voltage to current, Current to voltage etc. The key to understanding is the transformational properti…
657 questions
Feedback is a process whereby information from an output of a signal is used (intentionally or unintentionally) to alter the input of the same signal. Commonly used in operational amplifiers. An every…
CAN stands for Controller Area Network and is a bus often used in automotive applications. It is a two-wire differential protocol and works on baud rates from 10 kbits/sec to 1 Mbits/sec.
The microprocessor is an integrated circuit that elaborates information in the form of digital signals. Not to be confused with a microcontroller, which embeds many additional devices to control embed…
639 questions
An impedance that is non-zero during normal operation becoming very low
Induction motors are alternating current motors with rotors that are energized by induction. They are available with power ratings ranging from about 1/500 Hp (1.5 W) to 30,000 Hp (22MW). They are th…
Flash is a type of EEPROM which is page-eraseable. It's commonly used for microcontroller program memory and code storage. You can use this tag for questions about this type of memory as well as que…
616 questions
Deprecated tag. Do not use in the future.
610 questions
About the manufacturing of PCBs (Printed Circuit Boards).
607 questions
Most generally a class of materials that are neither insulators or conductors in their natural state but which can be manipulated via doping or electric fields to change the conduction state. Silicon,…
Battery and battery operated devices' charging methods and problems encountered relevant to charging.
597 questions
Simply the ratio of output signal to input signal, this dimensionless quantity is a measure of the amplification of a signal which may be represented by voltage, current of may even have a digital rep…
Piezo-electric device cut at a specific resonance frequency, mostly used in oscillators.
586 questions
Inductance is the property by which a change in current in a conductor induces a voltage both in the conductor itself and nearby inductors, the latter being the basis upon which transformers operate. …
583 questions
A famous textual circuit simulator with a number of graphic front-ends. Please tag with the precise flavor used (e.g. Pspice, LTspice, ngspice, Multisim, Proteus, Qucs) whenever appropriate (e.g. synt…
Current limiting is the practice in electrical or electronic circuits of imposing an upper limit on the current that may be delivered to a load with the purpose of protecting the circuit generating or…
Questions regarding Li-Po batteries (Lithium-ion Polymer, Polymer Lithium Ion or more commonly known as Lithium Polymer), including proper charging and usage.
Allowing for the flow of power or information without shared electrical nodes
A speaker is a device which converts an electrical audio signal into a corresponding sound. Questions about fixing speakers will be closed as off-topic.
Questions on the implementation of Wi-Fi (802.11) hardware. Note shopping questions are off-topic.
556 questions
Questions regarding physical fuses. Fuses are a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level. PPTC, PTC, and Polyfuse quest…
A kind of motor with automatic feedback, such as a hobby RC servo.
551 questions
A solid-state relay (SSR) is a switching device that accepts a small control signal to control a larger load current and/or voltage. In many ways they perform the same function as an electromechanical…
A coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix. coils are used in applications where electric currents interact with magnetic fields, in devices such as induc…
544 questions
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