Tags
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.
An electronic device that supplies electrical energy to a load. It can be AC or DC input. Typically DC output.
9736 questions
A device which includes a central processing unit (CPU), memory, and (generally) an assortment of I/O peripherals (UART, ADC, DAC, general-purpose I/O, I2C, etc.) in a tightly-coupled standalone packa…
9693 questions
Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.
9006 questions
Questions relating to the construction and applications of operational amplifiers, which are DC-coupled, high-gain electronic voltage amplifiers with a differential input and, usually, a single-ended …
8585 questions
Voltage, otherwise known as electrical potential difference (denoted ∆V and measured in volts) is the difference in electric potential between two points (adapted from Wikipedia). Voltage can be const…
8515 questions
Metal-Oxide-Semiconductor Field-Effect Transistor, a type of field-effect transistor (FET).
MOSFETs have an insulated gate, the voltage of which determines the conductivity of the device. This can …
7314 questions
A transistor is a semiconductor device that can amplify signals and switch power. The types that are used most are BJT (Bipolar Junction Transistor), UJT (Unijunction Transistor), and MOSFET (FET, for…
7303 questions
Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (one joule per second). Use this tag where power is a primary concern for …
7098 questions
Circuit (Network) analysis is the process of finding the voltages across, and the currents through, every component in the network. Consider using in conjunction with tags for the particular analysis …
7074 questions
An LED is a light-emitting diode. Lighting an LED is considered the "Hello world" of a circuit design, and it can be as simple as using a series resistor, or it can get more complicated, involving PWM…
6391 questions
An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy.
6353 questions
A fundamental electronic component that stores energy in an electric field, commonly used in filtering applications.
6325 questions
PCB is the acronym to Printed Circuit Board. A PCB is a carrier for the circuit's components and their electrical connections.
6187 questions
Flow of electric charge - typically movement of charge carriers, such as electrons. Measured in amperes (A).
5809 questions
An amplifier can be used to adapt the range of a signal to a requirement, to make it more robust for transmission, or to satisfy interface requirements (like input/output impedance).
4955 questions
Digital electronics treats discrete signals, unlike analog electronics which treats continuous signals. Digital logic is used to perform arithmetic operations with electric signals and constitutes the…
4779 questions
A resistor obeys Ohm's law (\$\small V=I\cdot R\$); the current through it is equal to the voltage across it divided by the resistance (equivalently \$I=\frac{V}{R}\$).
4536 questions
The process of creating a circuit to accomplish a particular task. When designing a circuit, one should consider how it should work, the target specifications, efficiency, cost effectiveness, code com…
4439 questions
About designing the boards which carry the components of an electronic circuit, including placement of parts and routing of traces. For questions about getting them built instead use PCB-fabrication. …
4366 questions
Short for Radio Frequency, i.e. frequencies at which radiation (intentional or not) plays a role. Typically associated with wireless communications, but also relevant for high-speed PCB design.
4019 questions
Diodes are semiconductor components made from a P-type (or metal in Schottky diodes) and N-type material (usually silicon, but germanium, selenium, and gallium arsenide can also be used), that allow c…
3906 questions
A transformer couples two or more AC signals through a magnetic field. Often used as galvanic isolation and to transform one AC voltage to another.
3763 questions
The STM32 is the third ARM family by STMicroelectronics. It follows their earlier STR9 family based on the ARM9E core, and STR7 family based on the ARM7TDMI core. The STM32 is based on the ARM Cortex-…
3738 questions
Analog circuits have a range of voltages, rather than just two as in digital logic.
3697 questions
USB is Universal Serial Bus. If your question relates to a specific chip, please mention it in your question.
3633 questions
An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). If the specific type of motor is known, it is helpful to use or add a more spec…
3537 questions
AC stands for Alternating Current. It usually applies to voltages with >100 V RMS, but can also be used for other AC voltages, like 24 V industrial AC power.
3524 questions
Devices to interrupt or route a signal or power one of several ways.
3513 questions
A voltage regulator is an analog circuit that produces a stable output voltage that doesn't vary with input voltage or load changes. Switching regulators are much more efficient than linear ones.
3489 questions
A relay is an electrically controlled switch. Electromechanical relays use an electromagnet to activate mechanical contacts, solid-state relays use semiconductor switches.
3342 questions
Refers to the conversion of electric power by using solid state components such as semiconductors. Can also generally apply to the field of electrical engineering which works with power electronics.
3340 questions
Questions about designing electronics for measuring, processing, and amplifying audio signals.
3300 questions
Sensors convert a physical quantity (e.g. temperature, pressure) into an electrical signal.
3215 questions
An integrated circuit (IC) is an electronic circuit built onto a single plate of a semiconductor material, normally silicon. Modern ICs may contain billions of transistors and they have played a major…
3188 questions
A switch-mode power supply (SMPS) switches been fully-on and fully-off states quickly to maintain voltage regulation. They offer lower power dissipation and run cooler than linear regulators that cont…
3176 questions
Please specify the battery type in your question. Include chemistry (e.g. lead-acid, Li-ion), voltage, capacity (in A·h or W·h), number of cells and how they are connected (series or parallel) .
3160 questions