| DC Electrical Circuit Analysis — resistive devices and schematic ground symbols (pp. 53, 59–64) | James M. Fiore, Mohawk Valley Community College | 2026-09-22 |
| Lessons In Electric Circuits, Vol. III — §2.8, bipolar junction transistors (emitter arrow, p. 63) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. III — §3.1, diode representations (Figure 3.5, p. 100) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. IV — §§3.2–3.4, the inversion bubble on gate symbols (pp. 31, 51) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. IV — §§3.4.1–3.4.3, AND and OR gate symbols (pp. 49–52) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. IV — §3.4.7, Exclusive-OR gate symbol (pp. 57–58) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. IV — §12, shift-register pin diagram (nc pins, p. 356) | Tony R. Kuphaldt | 2026-09-23 |
| Lessons In Electric Circuits, Vol. V — §9, Circuit Schematic Symbols (pp. 130–139) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — AC Induction Motor Starters, §2.1 (contactor coil terminals A1 and A2, pp. 7–9) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Bipolar Junction Transistors, §4.3 note 8 (emitter arrow direction, p. 32) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Bipolar Junction Transistors, simplified tutorial (current directions and the emitter arrow, p. 20) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Bipolar Junction Transistors, simplified tutorial and §4.2 (terminal roles) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Capacitors and Capacitive Circuits, §3.6 (electrolytic capacitors, p. 53) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Capacitors and Capacitive Circuits, §5.2 (capacitor labelling and polarity stripes, pp. 70–72) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §§3.2–3.3 (meters in series and parallel, pp. 8–11) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §§3.4–3.6 (NEMA and IEC symbol families, pp. 11–13) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.5 (cells and ideal source symbols, p. 12) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §§3.6–3.7 (resistors and potentiometers, pp. 13–14) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §3.8 (switch symbols, poles, throws and dashed links, pp. 15–16) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.9 (solenoid coil symbols, p. 18) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.10 (fuses and circuit breakers, p. 20) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §3.11 (relay example with motor and lamp loads, p. 22) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.11 (relay symbol, p. 21) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.12 (electromagnetic generator symbol, p. 23) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §§3.13–3.14 (inductors and transformers, pp. 24–26) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §3.15 (capacitor polarity, pp. 27–28) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Components and Symbols, §3.16 (diodes, p. 29) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.17 (LED symbol, p. 31) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §3.20 (wire crossings and dashed links, p. 36) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Components and Symbols, §4.3 (capacitor labelling, p. 49) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Electrical Switches, §§3.1–3.3 (pp. 16–19) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Electrical Switches, §3.4 (making and breaking order, p. 20) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Electrical Switches, §§3.5.1–3.5.3 (toggle and pushbutton operators, p. 21) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Electromechanical Relays, §§3.2–3.3 and §5.1 (normal and present contact status) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Electromechanical Relays, §3.7 (latching relays, p. 41) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Field-Effect Transistors, §4.3 and §6.2 (body, channel and symbol alternatives) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Inductors and Inductive Circuits, §§3.1–3.2 (current change and polarity) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Ohm’s and Joule’s Laws, Resistor Ratings, and Electrical Safety, §6.2 (resistor labelling, p. 73) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — PN Junctions and Diodes, §§2.3–2.7 (bias and diode variants) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Semiconductor Logic Gates, §2.1 (schematic versus package pinout, p. 8) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Semiconductor Logic Gates, §3.1 (truth tables, pp. 34–35) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Semiconductor Logic Gates, §3.4 (supply terminal labels VCC, VEE, VDD and VSS, p. 43) | Tony R. Kuphaldt | 2026-09-23 |
| ModEL — Sources and Loads, Voltmeters and Ammeters, §§4.2–4.6 and §6.2 | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Transformers, §§4.1, 4.3–4.4 (windings, centre taps, autotransformers and dots) | Tony R. Kuphaldt | 2026-09-22 |
| ModEL — Transistor Switching Circuits, §§3.1–3.4 (cutoff and saturation) | Tony R. Kuphaldt | 2026-09-22 |
| Modular Electronics Learning — authorship and CC BY 4.0 notice | Tony R. Kuphaldt | 2026-09-22 |
| University Physics, Vol. 2, §8.1 — capacitor representations, Figure 8.9 | OpenStax, Rice University | 2026-09-22 |