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Type: Posts; User: nayakajit87

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1. ## Thread: Changeover relay circuit standby power supply

by nayakajit87
Replies
3
Views
175

### Closed: Re: Changeover relay circuit standby power supply

i need right Minimum ckt to make it work.i could not able to imgine ckt here. Priciple i would use DPDT /DPST relay . how to enegersie coil voltage in this case
2. ## Thread: Changeover relay circuit standby power supply

by nayakajit87
Replies
3
Views
175

### Closed: Changeover relay circuit standby power supply

I am looking for a circuit for one of mine typical application. I have transformer power supply with 230VAC/DC input with 12V /1A and 5V/500mA output.

Now I wanted to introduce another stand by...
3. ## Thread: Current liming ckt for speaker

by nayakajit87
Replies
1
Views
204

### Closed: Current liming ckt for speaker

Kindly suggest necessary change to be made for current liming ckt for buzzer155741
4. ## Thread: Line to line measure in star connection formula

by nayakajit87
Replies
0
Views
146

### Closed: Line to line measure in star connection formula

Dear all

I am trying to 3 phase voltage using microcontroller. I have star connected ckt.155727

P = 3 x VP x IP x Cos(Φ) or
P = √3 x VL x IL x Cos(Φ)

Line Voltage is root three times phase...
5. ## Thread: Simple c code parse GPS data using pIC16F886/pic18F24K40

by nayakajit87
Replies
0
Views
155

### Closed: Simple c code parse GPS data using pIC16F886/pic18F24K40

Dear all,
i am looking for sample example code to parse Gps data. I have worked with Arduino Uno where they using TinyGps library to parse gps data....

by nayakajit87
Replies
8
Views
582

### Closed: Re: AutokeyReset function

The problem is solved.

by nayakajit87
Replies
8
Views
582

### Closed: Re: AutokeyReset function

This what changes i made.When i debug TestFlag became 1 and after define time became zero but it wont call reset funs(). for testing i kept Test period very low instead of 200 kept 5.

...

by nayakajit87
Replies
8
Views
582

### Closed: Re: AutokeyReset function

i have tested code . All above mentioned condition are working as per mentioned but it is not resetting .i have checked in debug when key pressed It load the value and some iteration it became zero....

by nayakajit87
Replies
8
Views
582

### Closed: Re: AutokeyReset function

I have tried but it didn't worked.

Currently its doing like this.

Manually: When Test button pressed RUN_TEST() called;

When MUTE button pressed RUN_Mute() called;
...

by nayakajit87
Replies
8
Views
582

### Closed: Re: AutokeyReset function

by nayakajit87
Replies
3
Views
429

### Closed: Re: Reading Analog value Rasberry pi

MCP4725 https://www.sparkfun.com/datasheets/BreakoutBoards/MCP4725.pdf it 12 bit resolution. Can i know how can i integrated to Rasberry pi. If i am having various sensor output 0-5Vdc , 0-10Vdc...

by nayakajit87
Replies
8
Views
582

### Closed: AutokeyReset function

Dear all.
I am looking for code where i could achieve below functionality.
function requirement: Once Test button pressed in timer interrupt timing should start after 1 min automatically...

by nayakajit87
Replies
3
Views
429

### Closed: Reading Analog value Rasberry pi

I am a newbie with the Raspberry Pi. I want to measure Temperature Reading in 12/16 bit resolution. can someone guide me how CKT should be designed and How can read value using software.

usually...
14. ## Thread: Zero crossing detecting formula 3 phase network

by nayakajit87
Replies
7
Views
646

### Closed: Re: Zero crossing detecting formula 3 phase network

i wanted to measure degree phase shift. I wanted calculation for my application like this
i have 3 phase 4 wire system. looking for equations
Line to Line and Line to Neutral voltage.when R,Y,B...
15. ## Thread: Zero crossing detecting formula 3 phase network

by nayakajit87
Replies
7
Views
646

### Closed: Zero crossing detecting formula 3 phase network

Dear all.

I am looking for the simple 3 phase zero crossing ckt and its formula to calculating it. I am trying with arduino uno board. Kindly suggest any recommended CKt
16. ## Thread: RASPBERRY PI input voltage detection

by nayakajit87
Replies
3
Views
349

### Closed: RASPBERRY PI input voltage detection

Dear all,

I am using Rasberry pi for one of my application.I have various level of digital input coming from sensor, voltage level

My voltage levels are 3.3V/5V/12V/24VDC. Based on these input...
17. ## Thread: Using 0-10V analog sensor output with rasbery pi

by nayakajit87
Replies
19
Views
1,198

### Closed: Re: Using 0-10V analog sensor output with rasbery pi

153626

I have schematic for reference . If i wanted to use 0-10V dc reading of analog voltage

Channel-1+ & channel - should be given in range of 0-5V through voltage divider network
...
18. ## Thread: Using 0-10V analog sensor output with rasbery pi

by nayakajit87
Replies
19
Views
1,198

### Closed: Re: Using 0-10V analog sensor output with rasbery pi

i need good resolution . my question is how can i do it.
19. ## Thread: Using 0-10V analog sensor output with rasbery pi

by nayakajit87
Replies
19
Views
1,198

### Closed: Re: Using 0-10V analog sensor output with rasbery pi

using voltage divider network we can reduce the range , Is there any proven schematic with 12/16 bit resolution using MCP module
20. ## Thread: Using 0-10V analog sensor output with rasbery pi

by nayakajit87
Replies
19
Views
1,198

### Closed: Using 0-10V analog sensor output with rasbery pi

Dear all.
I am new bie to rasberry coding and ckt design. I have 4 analog sensor which gives 0-10v DC output and 4-20mA current. I am looking for ckt that can read these range of Current and voltage...
21. ## Thread: 3 phase 3 wire measurement

by nayakajit87
Replies
16
Views
1,692

### Closed: Re: 3 phase 3 wire measurement

Here i have attached for reference.
i tried to trace IC label printed on using these website
1) V-X-M-H http://www.s-manuals.com/smd/vx
2)T-A-1-G http://www.s-manuals.com/smd/ta

I am assuming...
22. ## Thread: 3 phase 3 wire measurement

by nayakajit87
Replies
16
Views
1,692

### Closed: Re: 3 phase 3 wire measurement

Can you show with small circuit how can i do it??
23. ## Thread: 3 phase 3 wire measurement

by nayakajit87
Replies
16
Views
1,692

### Closed: Re: 3 phase 3 wire measurement

There are few question which are running out of mind
I wanted to use star and delta connection as common. When i use star i will get proper neutral reference. so it wont be difficult to read the...
24. ## Thread: 3 phase 3 wire measurement

by nayakajit87
Replies
16
Views
1,692

### Closed: Re: 3 phase 3 wire measurement

151661

Here i have attached image for reference.

In circuit: Here i would like use both Y and delta connection for measurement. when delta connected it should connected to virtual neutral . if...
25. ## Thread: 3 phase 3 wire measurement

by nayakajit87
Replies
16
Views
1,692

### Closed: Re: 3 phase 3 wire measurement

The circuit will work on both 3 phase 3 wire and 3 phase 4 wire. when i tested the device i found with neutral i could get 1v difference and without neutral connected means 3 phase 3 wire. i could...
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