Questions tagged [wireless-charging]

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2
votes
2answers
935 views

Is the QI norm about the components or the coil?

I would like to have induction charging for my smart object and I was looking at QI chargers/receivers The QI chargers I find on the market are "designed for phones" : they are very flat and offer a ...
0
votes
2answers
2k views

How does this wireless charger work?

I want to understand the way this circuit works. The following are diagrams of the transmitter and receiver of a wireless iPod charging circuit. I have added a link to the instructable that describes ...
2
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2answers
1k views

Inductive wireless mobile charger circuit

In wireless mobile charging circuit, is there any formula of spacing which varifies that by increasing diameter and turns, spacing (range) can be increased?
5
votes
4answers
8k views

How big does my wireless charging coil need to be?

Background: I need to wirelessly charge a battery at about 100W. However, there seems to be a gap in the wireless charging market. There are plenty of wireless power transfer systems operating in the ...
3
votes
3answers
157 views

Auxiliary circuit to reduce power losses in idle stage of this oscillator (wireless power application)

I am trying to implement the following resonant oscillator for wireless power transfer application. There will be a secondary coil coupled with Lp. . Reference - WPT Application Note One of the ...
1
vote
2answers
688 views

Mutual inductance vs coupling coefficient

Question regarding this and this question about mutual inductance and coupling coefficient. I'm trying to analyse a two coil system: It consists of two coils like in the picture with 2 cm air gap ...
1
vote
1answer
69 views

Is it possible to induce few volts IMPULS over 10 m distance?

I'm currently learning about electromagnetism at college, so this question is on mine mind for a few weeks. If we have on one side: 9 V battery, DC-DC converter to few kilovolts, capacitor, button, ...
1
vote
1answer
367 views

what is the use of ultrafast diodes in wireless battery charger ckt

Instructable I am working on a wireless charger that uses a ZVS Driver circuit for the transmitting end. This is its circuit diagram: I have attached the instructable where this came from. Wireless ...
0
votes
1answer
73 views

WPT compensation topologies

I'm experimenting with compensation topologies for inductive WPT systems and have a small confusion. The general WPT industry uses compensation networks to cancel out reactive components in the ...
0
votes
1answer
160 views

WPC Inductive Power Transfer

I am building an Inductive Power Transfer (IPT) system. As of now I am using a design based on a flyback converter. It works great but I am having issues adding features such as power control feedback ...
0
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0answers
271 views

QI COMM-Signal Simulation ltSpice

For a school project (Wireless Charging), I have to filter out and display the communication signal (2KHz) between transmitter and receiver from the Power Signal (100KHz). For this I have set up the ...