Project Files of Supercapacitor Library for Proteus: Gold Can, Power Cut Demo

SUPERCAPACITOR LIBRARY FOR PROTEUS - V1.0 (a real gold can with a live charge level, with a pop-up)
Designed by The Engineering Projects
www.TheEngineeringProjects.com

IMPORTANT LINKS
Article (read it first - pictures, step by step, every feature explained):
  https://www.theengineeringprojects.com/2026/11/supercapacitor-library-for-proteus.html
Report a bug or suggest a feature (our forum):
  https://www.theengineeringprojects.com/forum/category/supercapacitor-proteus-library
The demo runs on our Arduino UNO V4.0 (included) - working LEDs, RESET and a
built-in serial monitor, no Virtual Terminal to wire - its own article:
  https://www.theengineeringprojects.com/2026/10/arduino-uno-library-for-proteus-v40.html
The demo's button, resistors, LED and Schottky diode are our own parts too (included):
  https://www.theengineeringprojects.com/2026/11/push-button-library-for-proteus.html
Support us (the libraries are free):
  https://www.theengineeringprojects.com/donate

FILE STRUCTURE
Supercapacitor-TEP-v1.0/
|-- Proteus Library Files/
|   |-- ArduinoV4TEP.LIB                              201.9 KB   TEP Arduino boards V4.0 (UNO) -> LIBRARY
|   |-- TEP1N5819.LIB                                   9.7 KB   a part the demo uses -> LIBRARY folder
|   |-- TEPBUTTON.LIB                                  20.7 KB   a part the demo uses -> LIBRARY folder
|   |-- TEPLED5MM.LIB                                  21.8 KB   a part the demo uses -> LIBRARY folder
|   |-- TEPRESISTOR.LIB                               306.9 KB   a part the demo uses -> LIBRARY folder
|   |-- TEPSUPERCAP.LIB                                19.7 KB   the library -> LIBRARY folder
|-- Proteus Model Files/
|   |-- TEP1N5819.DLL                                 286.5 KB   its model -> MODELS folder
|   |-- TEPARDUINO.DLL                                883.5 KB   the Arduino board model -> MODELS folder
|   |-- TEPBUTTON.DLL                                 274.0 KB   its model -> MODELS folder
|   |-- TEPLED5MM.DLL                                 289.5 KB   its model -> MODELS folder
|   |-- TEPRESISTOR.DLL                               311.0 KB   its model -> MODELS folder
|   |-- TEPSUPERCAP.DLL                               300.0 KB   the model -> MODELS folder
|-- Proteus Simulation/
|   |-- Power_Cut_Demo.hex                             14.7 KB   the demo firmware
|   |-- Supercapacitor-Power-Cut-ArduinoUnoV4.pdsprj   23.7 KB   the demo project
|   |-- TEP1N5819.DLL                                 286.5 KB   copy of its model
|   |-- TEPARDUINO.DLL                                883.5 KB   copy of the board model
|   |-- TEPBUTTON.DLL                                 274.0 KB   copy of its model
|   |-- TEPLED5MM.DLL                                 289.5 KB   copy of its model
|   |-- TEPRESISTOR.DLL                               311.0 KB   copy of its model
|   |-- TEPSUPERCAP.DLL                               300.0 KB   copy of the model
|-- Arduino Code/
|   |-- Power_Cut_Demo/Power_Cut_Demo.ino               2.0 KB   the demo sketch (source of the .hex)
|-- README.txt                                        ~12.2 KB   this file
Total: 5.20 MB (unzipped). The C++ source code of the models is not included.

WHAT IS IT?
The gold supercapacitor, a 5.5 V 0.1 F coin stack, drawn at true scale: 11.5 mm across and 5.5 mm
tall, with two legs 5 mm apart, printing its own value. It is a true analog part:
  * A huge capacitance behind a large series resistance (ESR), 30 ohm here, as on the real part. It
    stores a lot, and it gives it back slowly.
  * A green level on the can fills with the charge at Run.
  * It is polarised, and it hates going over its 5.5 V. Reverse it or overcook it, and it heats and
    bursts. Fit a new part from the pop-up, or press Stop and Run.
  * Click it at Run for its pop-up: the charge, the stored energy, the live values, graphs, an event
    log and a check page. Its chips step the value through the E6 series and discharge it by hand.
The body is drawn as on the real part and to true scale against our Arduino.
The TEP signature and the pop-up are TEP additions.

ONE DEVICE (search "CAPSUPER" in Pick Devices):
  CAPSUPERTEP   "Supercapacitor V1.0" in TEPSUPERCAP.LIB (category Capacitors > Supercapacitors),
  prefix C, model TEPSUPERCAP.DLL. Pins + and -.

THE POP-UP
Click the part at Run. It stays closed until then (you can turn "Open the panel at Run" on in its
Settings page). Tabs:
    Capacitor  the state (EMPTY, CHARGING, HOLDING, DISCHARGING, OVER VOLTAGE, REVERSED, BURST), the
    can with its charge level, what it holds, and eight live values. The toolbar: E6 down, E6 up,
    Discharge, New part.
    Graphs     the live values over the last 2, 6 or 15 s. Live / Freeze.
    Event log  every change and warning; filters All / Changes / Warnings, Pause, Clear
    Check      what the part is doing and what to look at, each with a verdict (green = fine, amber
    = check, red = wrong)
    Settings   theme, text size, open at Run, window size
    Help       report a bug, suggest a feature, article, updates, donate, forum; Copy diagnostics
    for a bug report

TEST STATUS
V1.0: verified in Proteus 8.5 on 31 Oct 2026 (the demo project as shipped: an A4 sheet, an Arduino UNO V4.0).
What the runs showed (the model's own numbers and the sketch's monitor):
  * The project loads and starts cleanly. With SW1 held, C1 charged through the Schottky and R1, and
    settled at about 3.7 V, with 0.68 J stored, while it fed the LED.
  * Power cut: D4 fell LOW and the sketch saw it. C1 alone kept the LED going, and the sketch
    reported it dark after 41.5 s, at 2 V.
  * The peak current was 35 mA, inside the switch's 50 mA. A first version with no diode never saw
    the cut: C1 fed back into the pin.
  * The pop-up: Capacitor, Graphs, Event log, Check - all four pages followed the run.

INSTALLATION (about 2 minutes)
1. Close Proteus. Extract the WHOLE ZIP to a normal folder (e.g. Desktop).
2. Copy everything in "Proteus Library Files" (TEPSUPERCAP.LIB, TEPBUTTON.LIB, TEPRESISTOR.LIB,
TEPLED5MM.LIB, TEP1N5819.LIB and our Arduino library V4.0, ArduinoV4TEP.LIB, with the ARDUINO UNO
V4.0 used by the demo) to the LIBRARY folder of Proteus, for example:
     C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\LIBRARY
   (use the folder that already holds Proteus's own .LIB files).
3. Copy TEPSUPERCAP.DLL, TEPBUTTON.DLL, TEPRESISTOR.DLL, TEPLED5MM.DLL, TEP1N5819.DLL and
TEPARDUINO.DLL from "Proteus Model Files" to the MODELS folder (...\Proteus 8 Professional\MODELS).
4. Delete TEPSUPERCAP.IDX from the LIBRARY folder if it is there (Proteus makes a new index).
5. Start Proteus. In Pick Devices (P) search "CAPSUPER".

RUN THE DEMO
"Proteus Simulation\Supercapacitor-Power-Cut-ArduinoUnoV4.pdsprj" (an A4 sheet) - keep the .hex file
and the DLLs beside the project.
  ARD1:   Arduino UNO V4.0 running Power_Cut_Demo.hex, its serial monitor built in (window "TEP
  Arduino UNO - ARD1").
  SW1:    the mains switch, from +5V to D4, with R2 (10k) to GND.
  D1:     a 1N5819 Schottky diode from D4 to R1. It stops C1 from feeding back when the power is
  cut.
  R1, C1: 100 ohm and 0.1 F: the store, on A0.
  R3, D2: 220 ohm and a red LED: the load, on A0.
  1. Press Run. Click the small dot on SW1, and press Hold down: the mains is on. C1 charges and the
  LED lights.
  2. Press Hold down again: the power is cut. C1 keeps the LED going.
  3. The monitor reports the voltage each second, and the moment the LED goes dark.
Closed the monitor? Click the UNO's USB port.

WIRING (the same in Proteus and on a real board)
  +5V - switch - diode - 100 ohm - capacitor + , capacitor - - GND ; load across the capacitor
The diode lets the store fill, and stops it feeding back.
REAL HARDWARE:
 * Never go over the rated voltage. A cell is about 2.7 V; a 5.5 V part has two in series.
 * Charge it through a resistor: an empty supercapacitor looks like a short circuit to the supply.
 * It stays charged for days: discharge it through a resistor before you touch it.

THE DEMO SKETCH ON THE SERIAL MONITOR (Power_Cut_Demo V1.0, 9600 baud)
There are no commands. The sketch prints the voltage on C1 once a second.
EXPECTED MONITOR OUTPUT
  Supercapacitor power cut - The Engineering Projects
  Hold SW1 down to charge C1, then let go

PROPERTIES (double-click the part > Edit Properties)
  Capacitance                    0.1F, 0.47F, 1F
  Voltage rating, V              5.5
  Series resistance (ESR), ohm   30
  Printed value while stopped    picks the value shown on the can; Run sets it from the Capacitance
  box
Every run starts again from the properties.

LINKS.INI (OPTIONAL)
The Help page cards of the pop-up open web pages. To point them somewhere else without a new DLL,
put a text file named links.ini next to TEPSUPERCAP.DLL with lines KEY=URL, for example:
  ARTICLE=https://www.theengineeringprojects.com/...
Keys: WEBSITE, FORUM, BUG_REPORT, FEATURE_REQUEST, ARTICLE, USER_GUIDE,
UPDATE_CHECK, DONATE. Only http:// and https:// links are used; lines starting
with # are comments.

TROUBLESHOOTING
* The value on the can does not match: press Run once. The model sets it from the Capacitance box,
  to the nearest E6 value.
* It takes a long time to charge: that is normal. The time constant is (R + ESR) x C.
* BURST: it was reversed or over voltage. Fix the circuit, then New part.
* The pop-up does not open: click the part at Run (it stays closed until then).
* The part is not simulated: TEPSUPERCAP.DLL is missing from MODELS and from the project folder. No
  UNO / no monitor window: TEPARDUINO.DLL is missing, or click the UNO's USB port.

BUG REPORTS AND FEATURE REQUESTS
Please post them in our forum with a screenshot, the Serial Monitor text, the
simulation log and the pop-up's Copy diagnostics text:
  https://www.theengineeringprojects.com/forum/category/supercapacitor-proteus-library

SUPPORT US
This library is free. If it saves you time, please support our work:
  https://www.theengineeringprojects.com/donate

WEBSITE
  https://www.theengineeringprojects.com/

LICENCES AND THIRD-PARTY NOTES
* The model (TEPSUPERCAP.DLL), the symbols and artwork, the other parts of ours in the demo and the
  Arduino Library V4.0 (ArduinoV4TEP.LIB / TEPARDUINO.DLL, with its built-in TEP Serial Monitor
  Advance) are made by The Engineering Projects. The models use only standard Windows libraries; no
  Visual C++ redistributable is needed.
  The C++ source code is not included.
* Arduino UNO V4.0 (ArduinoV4TEP.LIB / TEPARDUINO.DLL, our Arduino Library V4.0 - its
  microcontroller is Proteus's own AVR model): The Engineering Projects,
  https://www.theengineeringprojects.com/2026/10/arduino-uno-library-for-proteus-v40.html
* The .hex file is built from the demo sketch and the Arduino AVR core 1.8.6, which includes
  LGPL-licensed code; its source code is available at
  https://github.com/arduino/ArduinoCore-avr/tree/1.8.6
* Proteus is a product of Labcenter Electronics and is not included. Arduino is a trademark of Arduino SA.
  This library is not made or endorsed by Arduino or Labcenter.

REBUILDING THE FIRMWARE (OPTIONAL)
The HEX file is supplied; Arduino IDE is not needed to run the demo. To edit the sketch, open
Arduino Code\Power_Cut_Demo\Power_Cut_Demo.ino, select Arduino Uno and use Sketch > Export Compiled
Binary. Replace the simulation's .hex with the exported HEX. The sketch needs 5,332 bytes of flash
and 223 bytes of RAM.

MODEL SCOPE AND LIMITS
Modelled: the capacitance, the ESR, a slow self-discharge, the charge and stored energy, heating
under reverse or over voltage, bursting and opening.
Not modelled: the several time constants of a real double layer, the change of ESR with temperature,
the balance of the two cells inside.

VERSION
TEP Supercapacitor library V1.0 (Nov 2026). Device CAPSUPERTEP (TEPSUPERCAP.LIB / TEPSUPERCAP.DLL).
Demo sketch Power_Cut_Demo V1.0. Demo board: ARDUINO UNO V4.0 (TEP Arduino Library V4.0) with its
built-in serial monitor.