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explain this project.

llanwnda

@copilot explain this project.

copilot

This project is focused on energy harvesting using a current transformer (CT) to store energy in a supercapacitor. The specific implementation seems to be inspired by a reference design from Texas Instruments, as mentioned in the document link you provided. Here's a breakdown of the project components and their roles:

Current Transformer (CT-Input):
- The current transformer is the primary energy source in this project. It steps down AC current from a higher primary current to a lower secondary current with an associated peak voltage of 1.7V and operates at a frequency of 60 Hz.
Diodes ($1N4007W$):
- The diodes $D1$ to $D6$ are likely configured in a rectification circuit, converting the AC output from the CT into a DC signal that can be stored in a capacitor. These diodes have a maximum repetitive reverse voltage of 1000V.
Capacitors:
- $C1$ (100µF) and $C3$ (47µF, $476SML100M$) are involved in the storage and smoothing of the harvested energy.
- C3, the supercapacitor, is a key component for energy storage, allowing the project to store the converted energy efficiently for later use.
Resistors:
- $R1$ (200kΩ) and $R2-load-output$ (2kΩ) act as load resistors or possibly part of a voltage regulation or divider network.
Nets:
- There are several nets connecting the diodes, capacitors, resistors, and the CT, indicating paths for current flow and connections required for rectification and energy storage.
Ground (GND) Net:
- Establishes a common return path for current, crucial for stability and reference in DC circuits.

Objective: The overall goal is to capture energy from the CT and continuously store this energy into the supercapacitor (C3). This setup is useful for applications requiring low-power energy harvesting, such as powering small sensors or remote devices that don't have access to other power sources.

For simulation and PCB layout, you would likely be simulating the rectifier behavior, analyzing the charge time of the supercapacitor, and later designing a PCB to physically build the circuit. Would you like help with a specific part of this project?

Someone is typing...

please explain what CT-input does.

asifkhan44

@copilot please explain what CT-input does.

copilot

The CT-input in your project represents the Current Transformer (CT). A current transformer is used to measure alternating current (AC) by reducing high current levels to a lower, more manageable level for measurement and monitoring.

Key Features of a Current Transformer:

Primary Function:
- It transforms the high current in its primary circuit to a lower current in its secondary circuit for measurement.
Electrical Isolation:
- A CT provides electrical isolation between the high-voltage power circuit and the measuring circuit, ensuring safe measurement.
Measurement:
- The secondary current is typically proportional to the primary current, making it easier to measure high currents indirectly.

Specifications for Your CT-input:

Peak Voltage: 1.7V peak
Frequency: 60Hz
DC Offset: 0V
Phase Offset: 0 degrees
Duty Cycle: 50%

In your project, the current transformer is likely used to measure the current from which energy can be harvested and stored in the supercapacitor. By stepping down the current, it allows the use of other components, like diodes and supercapacitors, in a safe and efficient manner.

If you have any more specific queries or need further details on implementation with the current transformer, feel free to ask!

Someone is typing...

Capacitance

47u F

CT-input

Resistance

200k Ω

Capacitance

100u F

Reviews

Electrical Rule Checks

Duplicate Designators

Reports components with identical designators.

No-Connect Violation

Reports no-connect pins that are connected.

Pin-to-Pin Conflicts

Reports incompatible pin connections on the same net based on electrical pin types.

Shorted Components

Reports any 2-pin component with both pins connected to the same net.

Missing Power

Reports power input pins that are not connected to a power source.

Single Pin Nets

Reports nets that have only one pin connected.

Missing Designator • 1

	Component
	P-Channel MOSFET hkHC

Reports components without a designator.

Design Rule Checks

Overlapping Copper • 42

Des	Net	Des	Net
Trace 08f2	GND	D1:A	None
Trace 18d2	GND	D1:A	None
Trace 57a0	GND	D5:K	None
Trace 5771	GND	D5:K	None
Trace 9230	GND	C1:K	None
Trace ce0a	GND	D4:A	None
Trace 4a04	Net (C1 - A)	D4:K	None
Trace 4c34	Net (C1 - A)	D1:K	None
Trace 4c34	Net (C1 - A)	D4:K	None
Trace 9c26	Net (C1 - A)	D1:K	None
Trace 9ea8	Net (C1 - A)	C1:A	None
Trace 9ea8	Net (C1 - A)	D1:K	None
Trace 51d6	Net (C1 - A)	D1:K	None
Trace 76a2	Net (C1 - A)	C1:A	None
Trace 76a2	Net (C1 - A)	R1:P1	None
Trace 7194	Net (C1 - A)	D1:K	None
Trace bdd4	Net (C1 - A)	C1:A	None
Trace 8d42	Net (D6 - K)	D5:A	None
C3:1	None	Trace 8ba7	GND
C3:1	None	Trace 8ba7	GND
C3:1	None	Trace a38c	GND
C3:1	None	Trace ecef	GND
C3:1	None	Trace ecef	GND
CT-input:1	None	Trace e86a	Net (D2 - K)
CT-input:2	None	Trace de98	Net (CT-input - P1)
D1:A	None	Trace f520	GND
D1:A	None	Trace fb89	GND
D2:A	None	Trace fb89	GND
D2:K	None	Trace bf75	Net (D2 - K)
D3:A	None	Trace ce0a	GND
D3:K	None	Trace de98	Net (CT-input - P1)
D4:A	None	Trace ec48	GND
D5:A	None	Trace f8e4	Net (D6 - K)
D6:K	None	Trace 8d42	Net (D6 - K)
D6:K	None	Trace 269d	Net (D6 - K)
P-Channel MOSFET hkHC:1	None	Trace e597	Net (C1 - A)
P-Channel MOSFET hkHC:2	None	Trace e3ca	Net (D6 - A)
P-Channel MOSFET hkHC:3	None	Trace e09e	GND
R1:P1	None	Trace e8bc	Net (C1 - A)
R2-load-output:P1	None	Trace c4aa	GND
R2-load-output:P2	None	Trace 56c3	GND
R2-load-output:P2	None	Trace c822	GND

Reports copper elements that are shorting.

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides

Reports components that have been modified using the "!important" flag.

Airwires

Reports missing routed traces between pads in a net.

Layers with Multiple Fills

Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

Floating Copper • 4

	Name
	Trace 197f, Trace 9f29
	Trace 3ea5, Trace f0df
	Trace 8e02, Trace 93e8
	Trace 90b0

Detect any via, trace or copper fill island that is not connected to any net.

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Missing Footprints

Reports components that need a footprint but don't have one.

Manufacturing

Manufacturer Part Number • 4

	Designator	MPN
	P-Channel MOSFET hkHC	None
	C1	None
	CT-input	None
	R2-load-output	None

Reports components that have no manufacturer part number.

Parts Available

Beta

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System Checks

Auto-Layout

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Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

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Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

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Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
jharwinbarrozo
15.3k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

Inspect

CT energy harvest supercap pcb and simulation

Controls

Properties

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$0.48–$1.13
	LCSC	$0.02–$0.09
	Mouser	$1.04

Assets

Footprint

SOT-323_SC-70.kicad_mod

id=SOT-323_SC-70

Thumbnail

simulated_ac_dc_thumbnail.png

id=simulated_ac_dc_thumbnail

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twbishop / CT energy harvest supercap pcb and simulation

Schematic