Table, look-up | Look-up tables |

Table, truth | Digital signals and gates |

Tachogenerator | Tachogenerators |

Tachometer | Tachogenerators |

Tank circuit | Voltage regulation |

| An electric pendulum |

| Simple parallel (tank circuit) resonance |

| Resonance in series-parallel circuits |

| Inductor-capacitor "tank" circuit |

Tantalum capacitor | Practical considerations |

Tap switch | Winding configurations |

TE mode | Waveguides |

TEM mode | Waveguides |

temperature coefficient | pn-Junction as Temperature Sensor |

Temperature coefficient of resistance | Conductor and Insulator Tables |

| Temperature coefficient of resistance |

Temperature compensation, strain gauge | Strain gauges |

temperature sensor | pn-Junction as Temperature Sensor |

temperature switch | Switch types |

Temperature, cr | Conductor and Insulator Tables |

Tera | Metric notation |

Terminal block | Building series-parallel resistor circuits |

Terminal strip | Building simple resistor circuits |

| Building series-parallel resistor circuits |

| A Very Simple Circuit |

terminal, "ring" lug | Automotive alternator |

tesla (unit) | Magnetic units of measurement |

Tesla coil | Special transformers and applications |

Test lead | Safe meter usage |

tetanus | Physiological effects of electricity |

tetrode | Nonlinear Conduction |

Tetrode tube | The tetrode |

| Depletion-type IGFETs |

Text editor | Computer simulation of electric circuits |

Theorem, DeMorgan's | Digital logic functions |

Theorem, Maximum Power Transfer | Maximum Power Transfer Theorem |

Theorem, Millman's | Millman's Theorem |

| Millman's Theorem revisited |

Theorem, network | Introduction to network theorems |

Theorem, Norton's | Norton's Theorem |

Theorem, Superposition | Superposition Theorem |

| Three-phase power systems |

| Circuit effects |

Theorem, Thevenin's | Thevenin's Theorem |

| Complex circuits |

thermal runaway | Current Mirror |

| JFET Current Regulator |

thermal runaway, bBJ | Feedback |

thermal voltage, diode | Diode Characteristic |

Thermocouple | Thermocouples |

| Bias Current |

| Thermoelectricity |

Thermoelectricity | Thermoelectricity |

Thermopile | Thermocouples |

Thevenin's Theorem | Thevenin's Theorem |

| Complex circuits |

| Special transformers and applications |

three input adder | Full-Adder |

Three-phase | Three-phase power systems |

three-phase bridge rectifier | Rectifier circuits |

Three-wire DC system | Three-phase power systems |

Throws, switch | Contact "normal" state and make/break sequence |

Thyratron | Ionization (gas-filled) tubes |

Thyratron tube | Gas discharge tubes |

Thyristor | Ionization (gas-filled) tubes |

| The Shockley Diode |

Timbre | Introduction |

Time constant | Voltage and current calculations |

| Capacitor Charging and Discharging |

Time constant equations | Time constant equations |

Time constant formula | Voltage and current calculations |

time delay relay contact | Time-delay relays |

Time domain | Waveform analysis |

Time-domain reflectometer | Finite-length transmission lines |

timer | Time-delay relays |

| The 555 IC |

| Monostable Multivibrator |

TM mode | Waveguides |

TO-18 | Package TO-18 |

TO-254AA | Package TO-254AA |

TO-3 | Package TO-3 |

TO-39 | Package TO-39 |

TO-5 | Package TO-5 |

TO-66 | Package TO-66 |

TO-72 | Package TO-72 |

toggle switch | Switch types |

Token ring | Extended-distance networks |

token-passing protocol | Network protocols |

toroidal core inductor | Factors affecting inductance |

torque | Power in electric circuits |

Total internal reflectance | Optical data communication |

Totalizer | Differentiator and integrator circuits |

Trace, printed circuit board | Building simple resistor circuits |

Tracking ADC | Tracking ADC |

Transconductance | Voltage-to-current signal conversion |

| Active-mode operation |

Transconductance amplifier | Voltage-to-current signal conversion |

transducer | Physiological effects of electricity |

| AC Instrumentation Transducers |

transductor | Special transformers and applications |

Transform function, definition of | Algebra Reference |

Transform, Fourier | Square wave signals |

transformer | Mutual inductance |

| Mutual inductance and basic operation |

| What is alternating current (AC)? |

| Introduction |

| Sensitive voltage detector |

transformer core, laminated | Energy losses |

transformer core, powdered iron | Energy losses |

transformer coupling | Input and output coupling |

Transformer inrush current | Inrush current |

transformer isolation | Electrical isolation |

Transformer ratio | Step-up and step-down transformers |

Transformer, ferroresonant | Voltage regulation |

transformer, homemade | Build a transformer |

transformer, peaking | Core saturation |

Transformer, step-down | Step-up and step-down transformers |

Transformer, step-up | Step-up and step-down transformers |

Transformer, variable | Winding configurations |

| AC Instrumentation Transducers |

Transient | Electrical transients |

transistor | Superconductivity |

| Voltmeter impact on measured circuit |

| Multimeters |

| pH measurement |

| Other waveshapes |

Transistor, field-effect | Voltmeter impact on measured circuit |

| pH measurement |

Transistor, junction field-effect | Static electricity sensor |

transition temperature | Superconductivity |

transmission line | A 50-Ohm Cable? |

Transmitter | Voltage signal systems |

Triangle wave | More on spectrum analysis |

| AC Waveforms |

Trigonometric derivatives | Calculus Reference |

Trigonometric equivalencies | Trigonometry Reference |

Trigonometric identities | Trigonometry Reference |

trimpot | Potentiometer |

Triode tube | The triode |

| Gas discharge tubes |

| Depletion-type IGFETs |

Triplen harmonics | Harmonics in Polyphase Power Systems |

| Harmonic phase sequences |

Tristate output | Special-output gates |

Troubleshooting | Troubleshooting -- Theory and Practice |

| Component failure analysis |

True-RMS meter | Measurements of AC magnitude |

Truth table | Digital signals and gates |

truth table to Karnaugh map | Karnaugh maps, truth tables, and Boolean expressions |

TTL | The NOT gate |

tube | Introduction |

Tube, discharge | Ionization (gas-filled) tubes |

Tube, vacuum | Voltmeter impact on measured circuit |

| Winding configurations |

tube, vacuum or electron | Conventional versus electron flow |

tuner circuit | Resonant filters |

Tuner circuit, radio | Applications of resonance |

tunnel diode | Nonlinear Conduction |

| Tunnel Diodes |

| Tunnel Diode |

tunneling transistor | Double-Layer Tunneling Transistor |

Turing machine | Finite-state machines |

Twin-T circuit, differential capacitance | AC Instrumentation Transducers |

Twisted pair cable | Introduction |

two input adder | Half-Adder |

Two's complement | Negative binary numbers |