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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.

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Anything related to transfer functions, i.e. those complex-valued functions of a complex variable used to model mathematically the I/O relationship of linear time-invariant initially-at-rest system us…
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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…
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An effect in semiconductors, the name of a diode that uses that effect and more generally any diode that has similar characteristics to a zener diode. Zener diodes have the unique characteristic of a …
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a Digital to Analog Converter.
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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…
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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…
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About the manufacturing of PCBs (Printed Circuit Boards).
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Questions on the implementation of Wi-Fi (802.11) hardware. Note shopping questions are off-topic.
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Questions relating systems powered by a 12 volt supply. This may include automotive systems and lead-acid batteries that are nominally 12 volts although be aware that under many conditions the actual …
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the process of designing a PCB including placement of parts and routing of traces.
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for circuits that only contain passive components, such as resistors, capacitors, and inductors. This includes RC, RL, LC, and RLC circuits.
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a branch of electronics related to identifying and solving problems caused by electromagnetic interference (EMI) between devices. It encompasses both attempting …
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Switching can be defined as the change in state whether it be an analog, digital, or mechanical device. For digital devices, switching can be defined as a transition from HIGH to LOW or vice versa. Fo…
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Battery and battery operated devices' charging methods and problems encountered relevant to charging.
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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…
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A kind of motor with automatic feedback, such as a hobby RC servo.
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AC power with three legs run 120 degrees out of phase
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the electrical standard used on most serial ports. Note that this standard is a +/- 15 volt system and requires a FDMI converter to make it compatible with TTL logic levels.
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Any circuit for driving a motor that's more complex than wiring it to a power source. H-bridges, brushless motor controllers, stepper controllers, VFDs, etc.
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Piezo-electric device cut at a specific resonance frequency, mostly used in oscillators.
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non-zero during normal operation becoming very low
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A transmission line may refer to a cable or assembly that is designed to carry radio frequencies and must consider the wave nature of the signal. Coaxial cable is an example of a transmission line. …
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the creator of microcontrollers like the AVR line (ATMega and ATtiny) and SAM devices. Arduino microcontrollers use Atmel's AVR line of devices.
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A digital circuit that literally "counts" - it progresses through a sequence of states that are representative of some value. It need not count in a natural progression i.e. 1,2,3,4,5 etc. to be cons…
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A circuit that accepts a small-signal digital input and produces as output a high current appropriate for driving the gate of a power MOSFET. See also [tag:gate-driving].
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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…
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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…
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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. …
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a device which converts an electrical audio signal into a corresponding sound. Questions about fixing speakers will be closed as off-topic.
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a tag about anything generates photons in the visible spectrum
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A sensor converting an acoustic signal into an electric one.
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The CPU, known as the Central Processing Unit, is known as the heart of the computer. It is responsible for carrying out the instructions of a computer program by performing the basic arithmetic, logi…
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Questions regarding Li-Po batteries (Lithium-ion Polymer, Polymer Lithium Ion or more commonly known as Lithium Polymer), including proper charging and usage.
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Radio Frequency IDentification
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In the case of an electronic circuit, series refers to components connected in such a way that current must pass through each in a single path.
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a Texas Instruments low-power microcontroller family.