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Type: Posts; User: varunme

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1. ## Thread: Designing IGBT DC Source

by varunme
Replies
3
Views
417

### Closed: Re: Designing IGBT DC Source

Sorry, its 6 to 12V, power will be 0-500A x 6-12V, so power will be around 3kW to 6kW

Ok, I will work on it and update
2. ## Thread: Designing IGBT DC Source

by varunme
Replies
3
Views
417

### Closed: Designing IGBT DC Source

I need to design an IGBT based dc powersupply for electrochemical application
Planned to making high current(500A), low ripple and high frequency

Can we just rectify and change the voltage by...
3. ## Thread: powerfull Ultrasonic driver circuit

by varunme
Replies
8
Views
5,382

### Closed: Re: powerfull Ultrasonic driver circuit

MD1712 can be used?

- - - Updated - - -

100khz audio amplifier will work? can we make exciation voltage of 1000V with audio amplifier?

- - - Updated - - -

lm3524 based amplifier can be...
4. ## Thread: powerfull Ultrasonic driver circuit

by varunme
Replies
8
Views
5,382

### Closed: Re: powerfull Ultrasonic driver circuit

So by changing TIP41/ TIP42 to high current one it will solve the power requirement

I have to build a circuit that can work from 20khz to 100khz, so its not possible with this method by changing...
5. ## Thread: powerfull Ultrasonic driver circuit

by varunme
Replies
8
Views
5,382

### Closed: Re: powerfull Ultrasonic driver circuit

can this circuit work?

137116
6. ## Thread: Calculating the efficicency of synchronous buck converter in simulink

by varunme
Replies
2
Views
580

### Closed: Calculating the efficicency of synchronous buck converter in simulink

How can we plot a graph on, the efficicency of synchronous buck converter in simulink
7. ## Thread: powerfull Ultrasonic driver circuit

by varunme
Replies
8
Views
5,382

### Closed: Re: powerfull Ultrasonic driver circuit

It is a high power transducer, of the order of 100W

excitation voltage:1000 V
Frequency (KHz) 30
Resonance Impedance (Ω) 10-25
Static Capacity (pF)±10% 5000
Input Power (W) 100
8. ## Thread: powerfull Ultrasonic driver circuit

by varunme
Replies
8
Views
5,382

### Closed: powerfull Ultrasonic driver circuit

Hi,
I have powerfull ultrasonic tranducers for 20kh to 80kh, need to build driver board
can we use 555 timer to drive it?

how the high excitation produced to drive it?
I am attaching two...
9. ## Thread: Difficulty in interpreting STM32F407VE datasheet

by varunme
Replies
2
Views
714

### Closed: Difficulty in interpreting STM32F407VE datasheet

Hi,
I am finding difficulty in identifying STM32F407VE [LQFP100], UART1, UART2 pins from the datasheet, kindly some one help me

http://www.st.com/resource/en/datasheet/stm32f407ve.pdf

thank you
10. ## Thread: Datasheet for P105N3LL mosfet

by varunme
Replies
4
Views
1,954

### Closed: Re: Datasheet for P105N3LL mosfet

Didnt find is it whether a logic mosfet? can we turn on by microcontroller 5V?
11. ## Thread: Datasheet for P105N3LL mosfet

by varunme
Replies
4
Views
1,954

### Closed: Datasheet for P105N3LL mosfet

if someone have Datasheet for P105N3LL mosfet, kindly help me
No information found on web
12. ## Thread: UART data not coming to second uart port

by varunme
Replies
5
Views
961

### Closed: Re: UART data not coming to second uart port

Thank you bigdogguru it was right
and I am having difficulty in setting in registers, so I have made one UART polling and another interrupt based
13. ## Thread: UART data not coming to second uart port

by varunme
Replies
5
Views
961

### Closed: Re: UART data not coming to second uart port

I am using pic32mx795f512H

First UART is connected to sim900A, it is initializing
second directly to serial port of PC

since the second UART. uart2 to pc serial port the interrrupt priorities...
14. ## Thread: UART data not coming to second uart port

by varunme
Replies
5
Views
961

### Closed: UART data not coming to second uart port

I have a program which sends data to uart and lCD, the program sends data to first uart, but no communication with the second

someone kindly help

void main() {

AD1PCFG = 0xFFFD; //...
15. ## Thread: PIC32 UART interrupt

by varunme
Replies
2
Views
890

### Closed: Re: PIC32 UART interrupt

yes, mikroC

- - - Updated - - -

The UART system is sim900a

AT commands for the same is

const char atCommand1[] = "AT\r";
16. ## Thread: PIC32 UART interrupt

by varunme
Replies
2
Views
890

### Closed: PIC32 UART interrupt

For this program to initiate by interrupt

void Send_SMS(char *s1, char *s2, const char *s3, const char *s4, const char *s5, const char *s6, const char *s7, char *s8, unsigned int *idx, char...
17. ## Thread: Zigbee s2 configuration for sending data to PC

by varunme
Replies
0
Views
973

### [SOLVED]Closed: Zigbee s2 configuration for sending data to PC

I am struggling to configure zigbee s2 modules for sending data to PC, have two modules, one to uC and other to PC using usb to ttl
someone kindly help me
18. ## Thread: How can we Change mikroC oscillator frequency for 8MHZ for pic32 compiler?

by varunme
Replies
3
Views
877

### Closed: Re: How can we Change mikroC oscillator frequency for 8MHZ for pic32 compiler?

It uses PLL, I use 8MHz, so PLL/2 and PLLx20 to 80MHz, thats what i need to know
19. ## Thread: How can we Change mikroC oscillator frequency for 8MHZ for pic32 compiler?

by varunme
Replies
3
Views
877

### Closed: How can we Change mikroC oscillator frequency for 8MHZ for pic32 compiler?

How can we Change mikroC oscillator frequency for 8MHZ for pic32 compiler? uC is pic32mx795f512H
20. ## Thread: Datsheet for RG2004A 20x4 LCD

by varunme
Replies
3
Views
3,006

### Closed: Re: Datsheet for RG2004A 20x4 LCD

How would check both are same?
21. ## Thread: Datsheet for RG2004A 20x4 LCD

by varunme
Replies
3
Views
3,006

### Closed: Datsheet for RG2004A 20x4 LCD

Anyone have datasheet or pinout for RG2004A 20x4 LCD, kindly help
22. ## Thread: Relay selection for half HP pump

by varunme
Replies
1
Views
964

### Closed: Relay selection for half HP pump

can we use 250V 10A relay for half HP pump in 220V supply?
23. ## Thread: Need Solution for AA Batteries Charger

by varunme
Replies
8
Views
832

### Closed: Re: Need Solution for AA Batteries Charger

Krithik, if you require one or two for your own purpose then, it is available in market at very low cost in your area
24. ## Thread: TB6600 using pic micro

by varunme
Replies
1
Views
1,460

### Closed: TB6600 using pic micro

can we control stepper by using tb6600 by using the below flow code?
the tb6600 board i am using have EN ;CLK ;DIR pins
and M1 M2 M3 and TQ

for (i=0; i<=10; i++)
{
EN =1;
CLK =1;
DIR =1
25. ## Thread: 13V- 50V to 10V convertion

by varunme
Replies
17
Views
1,200

### Closed: Re: 13V- 50V to 10V convertion

What about capacitor divider?
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