What other website?

This student in India posts the same questions all over the web. Some of us bounce back and forth from here to http://www.electro-tech-online.com .

 

Some of us bounce back and forth from here to http://www.electro-tech-online.com .

Well, that won't be me.

 

Well, that won't be me.

Then you are missing half of everything talked about in this and on the other website.

Some of these threads are on 3 other websites and become very confusing.

 

Hi again,

At what frequency are you switching the transistors?

I am not using PWM now as i have connected the two input of LM339 to gnd and 5V....

 

Then you are missing half of everything talked about in this and on the other website.

Some of these threads are on 3 other websites and become very confusing.

Good for those who have the time to keep track of the same thread on different forums.

It`s a non-intelligent way to get a solution to the OPs problem.

 

HI again,

Today i have tested the H-BRIDGES with 12V and 12V series connection i.e. 24V with PMDC motor.
The maximum current that i have seen seen on multimeter is 6-7Amp that was the limited current from battery.

OK, when i have used Brushed DC gear motor at 24V and switching the freq (of 555 using pot meter) to the input of LM339 as shown in circuit before.
there was lot of spark at the brushes at low freq. so i think it require snubber circuit at motor terminal.
So, please suggest how to build snubber circuit.