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I intend to avoid coil because device size is small (similar to wrist watch)
Your point is valid and I think we ought to go with coil.
Can you guide me how to embed it in small device?
P.S. the battery is 3.4V/800mAh (Li poly)
Hello
I am thinking to use some other component instead of coil at wireless receiver.
It might be a stupid or innovative idea (not sure what to call it with little knowledge of this area)
I came to this idea from FM receiver ckt that collect energy via antenna
Can anybody guide me to it...
Hello
I would like to know some mobile device location in vicinity using my Android phone.
Idea:
Send gps location to device via bluetooth. The device will save the location.
The device will send alarm to mobile via bluetooth if it is moved from its locations.
For this, I found MAX2769 useful...
I want to develop Qi compliant wireless power receiver for 5v/800mA Li-ion OR Li-poly batteries.
I found this list of WPC 1.1 Compatible Fully Integrated Wireless Power Receiver IC [https://www.ti.com/product/bq51013b?keyMatch=Qi%20Compliant%20Wireless%20Power%20receiver&tisearch=Search-EN]
how...
BT through LM3940 (3.3 V out)
PIC directly from 5v Battery
Tx power of BT is 7dbm
{https://www.digikey.com/product-detail/en/WT32I-E-AI6/1446-1037-6-ND/4806567}
In my circuit, there are two main components: 1- Pic628A and 2- Bluetooth module
BT power consumption is 7mW (tx) and controller datasheet says 800mW
Three transistors are also connect LED to controller.
the circuit will work on demand so i put switch to on when needed.
It is expected to used it...
Thank your reply
Here is the battery I intend to use https://www.alibaba.com/product-detail/hot-sale-rechargeable-lipo-battery-5v_60051438009.html
Can you suggest another or Li-ion (I could change battery if wireless power is not supported)
Due to small device, dimension is the issue
Here is...
Choice reduce to:
1. BQ51003 (charge current: .5A, output 5V)
2. BQ51013B (charge current: 1A, output 5V)
what is preferred for my case (.8Ahr batetry, 5V)
Please guide
Thank you
Hello
I am working to develop custom wireless charger for handheld device containing 5V li-poly battery (<1Ahr)
First I thought to develop both transmitter and receiver pair for wireless charging and then I realized that it may be done if I follow Qi standard. In that way, I can use available...
In my project where I send data from a bletooth device and receive via WTL32i.
I am thinking to interface PIC (628) with WTL32i via UART interface.
Going through some posts about bluetooth interface, I have some questions to ask;
1. What minimum pins of both PIC and WTL should be connected...
I am trying to interface PIC628A with WT32i.
PIC has USART interface and WT32 has UART pins.
Knowing that "Synchronous mode (USART) requires both data and a clock and asynchronous mode (UART) requires only data"
I concluded that I have to connect pins 8 and 9 of PIC to respective WT32 pins (16...
when i place probe, i got some values (almost zero and changing continuously)
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As posted above, i tried it by replacing cap with inductor but cant get expected result (5.75V at 2)
By the way, I'm right when I say out at pin 2 or it should be at other pin?
I'm using this IC...
I tried to reconnect, but dots appears whenever there are more than one path. For confirmation, I checked voltage after dots to be sure about continuity. All works same
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exploring output since both are energy storage device.
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Problem is 0v (up to 3...
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