Electrical Engineering Symbols

This page contains 72 electrical engineering symbols, covering standard units, circuit components, logic gates, digital circuit states, and measurement instruments. Each symbol carries precise physical or logical meaning used in circuit design, research papers, and technical manuals.

🔌 Basic Unit Symbols

V is called the "Volt Symbol". It is the SI unit of voltage, representing electric potential difference. Its Unicode is U+0056, LaTeX is V, HTML is V.

A is called the "Ampere Symbol". It is the SI unit of electric current. Its Unicode is U+0041, LaTeX is A, HTML is A.

Ω is called the "Ohm Symbol". It is the SI unit of electrical resistance. Its Unicode is U+03A9, LaTeX is \Omega, HTML is Ω.

W is called the "Watt Symbol". It is the SI unit of power. Its Unicode is U+0057, LaTeX is W, HTML is W.

F is called the "Farad Symbol". It is the SI unit of capacitance. Its Unicode is U+0046, LaTeX is F, HTML is F.

H is called the "Henry Symbol". It is the SI unit of inductance. Its Unicode is U+0048, LaTeX is H, HTML is H.

C is called the "Coulomb Symbol". It is the SI unit of electric charge. Its Unicode is U+0043, LaTeX is C, HTML is C.

J is called the "Joule Symbol". It is the SI unit of energy and work. Its Unicode is U+004A, LaTeX is J, HTML is J.

Hz is called the "Hertz Symbol". It is the SI unit of frequency. Its Unicode is U+0048 U+007A, LaTeX is Hz, HTML is Hz.

S is called the "Siemens Symbol". It is the SI unit of electrical conductance. Its Unicode is U+0053, LaTeX is S, HTML is S.

T is called the "Tesla Symbol". It is the SI unit of magnetic flux density. Its Unicode is U+0054, LaTeX is T, HTML is T.

Wb is called the "Weber Symbol". It is the SI unit of magnetic flux. Its Unicode is U+0057 U+0062, LaTeX is Wb, HTML is Wb.

🔧 Circuit Symbols

⎓ is called the "DC Supply Symbol". Used for direct current power sources. Its Unicode is U+2393, HTML is ⎓.

∼ is called the "AC Supply Symbol". Used for alternating current sources. Its Unicode is U+223C, LaTeX is \sim, HTML is ∼.

⏚ is called the "Ground Symbol". Represents circuit reference potential. Its Unicode is U+23DA, HTML is ⏚.

⌁ is called the "Alternating Current Symbol". Marks AC signals and ports. Its Unicode is U+2301, HTML is ⌁.

⏛ is called the "AC Source Symbol". Represents alternating signal sources. Its Unicode is U+23DB, HTML is ⏛.

⏨ is called the "Ohm Special Symbol". Technical variant for resistance unit. Its Unicode is U+23E8, HTML is ⏨.

⏦ is called the "Antenna Symbol". Marks wireless transmission components. Its Unicode is U+23E6, HTML is ⏦.

⌖ is called the "Target Symbol". Used in radar and positioning systems. Its Unicode is U+2316, HTML is ⌖.

⎇ is called the "Switch Symbol". Represents toggle and selector functions. Its Unicode is U+2387, HTML is ⎇.

⌽ is called the "Phase Symbol". Indicates phase angle in AC circuits. Its Unicode is U+233D, HTML is ⌽.

∿ is called the "Sine Wave Symbol". Represents sinusoidal alternating signals. Its Unicode is U+223F, LaTeX is \backsim, HTML is ∿.

⌆ is called the "Rectifier Symbol". Marks AC-to-DC conversion circuits. Its Unicode is U+2306, HTML is ⌆.

⎊ is called the "Transformer Symbol". Represents electromagnetic voltage transformers. Its Unicode is U+238A, HTML is ⎊.

⎋ is called the "Circuit Breaker Symbol". Marks overcurrent protection devices. Its Unicode is U+238B, HTML is ⎋.

⎌ is called the "Switch Component Symbol". Represents manual or electrical switches. Its Unicode is U+238C, HTML is ⎌.

⎍ is called the "Resistor Symbol". Represents fixed resistive components. Its Unicode is U+238D, HTML is ⎍.

⎎ is called the "Capacitor Symbol". Represents capacitive components. Its Unicode is U+238E, HTML is ⎎.

⎏ is called the "Inductor Symbol". Represents inductive components. Its Unicode is U+238F, HTML is ⎏.

⎐ is called the "Diode Symbol". Represents unidirectional semiconductor diodes. Its Unicode is U+2390, HTML is ⎐.

⎑ is called the "Transistor Symbol". Represents bipolar junction transistors. Its Unicode is U+2391, HTML is ⎑.

⎒ is called the "FET Symbol". Represents field-effect transistors. Its Unicode is U+2392, HTML is ⎒.

⎔ is called the "IC Symbol". Represents integrated circuits and chips. Its Unicode is U+2394, HTML is ⎔.

⎕ is called the "Logic Gate Symbol". Represents digital logic gate modules. Its Unicode is U+2395, HTML is ⎕.

⌘ is called the "Command Symbol". Used for control and function indicators. Its Unicode is U+2318, HTML is ⌘.

∧ Logic Gate Symbols

∧ is called the "AND Gate Symbol". Represents logical conjunction. Its Unicode is U+2227, LaTeX is \land, HTML is ∧.

∨ is called the "OR Gate Symbol". Represents logical disjunction. Its Unicode is U+2228, LaTeX is \lor, HTML is ∨.

¬ is called the "NOT Gate Symbol". Represents logical negation. Its Unicode is U+00AC, LaTeX is \lnot, HTML is ¬.

⊕ is called the "XOR Gate Symbol". Represents exclusive OR operation. Its Unicode is U+2295, LaTeX is \oplus, HTML is ⊕.

⊼ is called the "NAND Gate Symbol". Represents NOT AND operation. Its Unicode is U+22BC, LaTeX is \barwedge, HTML is ⊼.

⊽ is called the "NOR Gate Symbol". Represents NOT OR operation. Its Unicode is U+22BD, LaTeX is \veebar, HTML is ⊽.

⊙ is called the "XNOR Gate Symbol". Represents exclusive NOR operation. Its Unicode is U+2299, LaTeX is \odot, HTML is ⊙.

⇔ is called the "Equivalence Symbol". Represents logical equivalence. Its Unicode is U+21D4, LaTeX is \Leftrightarrow, HTML is ⇔.

⊤ is called the "True Symbol". Represents logical high or constant true. Its Unicode is U+22A4, LaTeX is \top, HTML is ⊤.

⊥ is called the "False Symbol". Represents logical low or constant false. Its Unicode is U+22A5, LaTeX is \bot, HTML is ⊥.

⇒ is called the "Implication Symbol". Represents conditional implication. Its Unicode is U+21D2, LaTeX is \Rightarrow, HTML is ⇒.

∃ is called the "Existential Quantifier Symbol". Represents existential logic. Its Unicode is U+2203, LaTeX is \exists, HTML is ∃.

∀ is called the "Universal Quantifier Symbol". Represents universal logic. Its Unicode is U+2200, LaTeX is \forall, HTML is ∀.

⊢ is called the "Derivation Symbol". Represents logical inference. Its Unicode is U+22A2, LaTeX is \vdash, HTML is ⊢.

⊨ is called the "Satisfaction Symbol". Represents semantic entailment. Its Unicode is U+22A8, LaTeX is \models, HTML is ⊨.

⊣ is called the "Non-Derivation Symbol". Represents logical non-inference. Its Unicode is U+22A3, LaTeX is \dashv, HTML is ⊣.

🔢 Digital Circuit Symbols

0 is called the "Low Level Symbol". Represents logic 0 in digital systems. Its Unicode is U+0030, LaTeX is 0, HTML is 0.

1 is called the "High Level Symbol". Represents logic 1 in digital systems. Its Unicode is U+0031, LaTeX is 1, HTML is 1.

H is called the "High State Symbol". Marks high logic level. Its Unicode is U+0048, LaTeX is H, HTML is H.

L is called the "Low State Symbol". Marks low logic level. Its Unicode is U+004C, LaTeX is L, HTML is L.

Z is called the "High Impedance Symbol". Represents tri-state high-Z mode. Its Unicode is U+005A, LaTeX is Z, HTML is Z.

X is called the "Unknown State Symbol". Represents undefined or don’t-care logic. Its Unicode is U+0058, LaTeX is X, HTML is X.

⎚ is called the "Clear Symbol". Represents reset and clear signals. Its Unicode is U+239A, HTML is ⎚.

⎛ is called the "Rising Edge Symbol". Marks positive clock edge trigger. Its Unicode is U+239B, HTML is ⎛.

⎞ is called the "Falling Edge Symbol". Marks negative clock edge trigger. Its Unicode is U+239E, HTML is ⎞.

⎟ is called the "Clock Symbol". Represents clock signal inputs. Its Unicode is U+239F, HTML is ⎟.

⎠ is called the "Latch Symbol". Represents level-sensitive latch circuits. Its Unicode is U+23A0, HTML is ⎠.

⎡ is called the "Flip-Flop Symbol". Represents edge-triggered flip-flops. Its Unicode is U+23A1, HTML is ⎡.

📊 Measurement Instrument Symbols

⎓ is called the "DC Measurement Symbol". Marks DC measurement modes. Its Unicode is U+2393, HTML is ⎓.

∼ is called the "AC Measurement Symbol". Marks AC measurement modes. Its Unicode is U+223C, LaTeX is \sim, HTML is ∼.

⎋ is called the "Frequency Symbol". Marks frequency measurement functions. Its Unicode is U+238B, HTML is ⎋.

⌁ is called the "Period Symbol". Marks signal period measurement. Its Unicode is U+2301, HTML is ⌁.

⌭ is called the "Duty Cycle Symbol". Marks pulse width measurement. Its Unicode is U+232D, HTML is ⌭.

⏚ is called the "Instrument Ground Symbol". Marks test equipment ground terminals. Its Unicode is U+23DA, HTML is ⏚.

⏛ is called the "Signal Source Symbol". Marks waveform generator outputs. Its Unicode is U+23DB, HTML is ⏛.

⎊ is called the "Oscilloscope Symbol". Represents oscilloscope test devices. Its Unicode is U+238A, HTML is ⎊.

📌 Usage Notes

When using electrical engineering symbols: Unit symbols should use math mode in LaTeX. Special Unicode circuit symbols require modern fonts such as Segoe UI Symbol or Noto Sans for proper display. Logic gate symbols should be paired with Boolean expressions in formal documents. High-impedance state Z requires special attention in simulation environments. SVG and PNG exports use current system fonts for rendering. Always verify symbol accuracy before final use.

💡 Usage Tips

Click any symbol card to view details. Copy Unicode, LaTeX, HTML, or SVG source with one click. Download 512×512 transparent PNG images for diagrams, reports, and teaching materials. For academic papers, LaTeX commands provide the most consistent typographic results across platforms.