Comments on: H-Bridge Fundamentals http://roko.ca/robotics/h-bridge-fundamentals Mon, 26 Jul 2010 23:48:19 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Mitul http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-469 Mitul Mon, 26 Jul 2010 23:48:19 +0000 http://roko.ca/?p=44#comment-469 I have to control the motor using microcontroller.Is H-bridge required? how do i interface microcontroller ,h bridge and motor. please help I have to control the motor using microcontroller.Is H-bridge required? how do i interface microcontroller ,h bridge and motor.
please help

]]> By: ZoneMikel's Blog » Blog Archive » ZXMHC3F381N8 H-Bridge research, how do we use these? http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-458 ZoneMikel's Blog » Blog Archive » ZXMHC3F381N8 H-Bridge research, how do we use these? Mon, 17 May 2010 14:42:38 +0000 http://roko.ca/?p=44#comment-458 [...] lack of xp with mosfets was messing me up a little with these. Anyway in my investigations I found this very nice webpage on how to mess with H-bridges. The main thing I found is that you CANNOT CONNECT THE GATES ON [...] [...] lack of xp with mosfets was messing me up a little with these. Anyway in my investigations I found this very nice webpage on how to mess with H-bridges. The main thing I found is that you CANNOT CONNECT THE GATES ON [...]

]]> By: tuan anh http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-448 tuan anh Tue, 16 Mar 2010 22:18:18 +0000 http://roko.ca/?p=44#comment-448 Hi, thanks much for your good explanation of H-bridge. I just want u to explain more about operation of the 4 high-speed Schotky diodes. As u said, we use them to prevent back EMF (electro-magnetic field - right?), in other words, to prevent back current flow. Could u make it clear about how the back current flows inside the circuit? Hi, thanks much for your good explanation of H-bridge. I just want u to explain more about operation of the 4 high-speed Schotky diodes. As u said, we use them to prevent back EMF (electro-magnetic field – right?), in other words, to prevent back current flow. Could u make it clear about how the back current flows inside the circuit?

]]> By: FOB Controlled H-Bridge Motor with Arduino | The Inner Qube http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-445 FOB Controlled H-Bridge Motor with Arduino | The Inner Qube Fri, 12 Mar 2010 11:56:16 +0000 http://roko.ca/?p=44#comment-445 [...] http://roko.ca/robotics/h-bridge-fundamentals http://robot-overlord.blogspot.com/2009/06/controlling-dc-motor-using-arduino-usb.html [...] [...] http://roko.ca/robotics/h-bridge-fundamentals http://robot-overlord.blogspot.com/2009/06/controlling-dc-motor-using-arduino-usb.html [...]

]]> By: arash http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-438 arash Sun, 24 Jan 2010 21:45:42 +0000 http://roko.ca/?p=44#comment-438 hello my friend please help me please send pdf or shematic file circuit driver dc motor 24 v for automatic door(left or right fasrt speed and low speed by pwm and countering rpm by shaft encoder ) by mosfet and L99H01 chip or masfet and ir 2102 chip thank you please send now i am a waiting hello
my friend
please help me
please send pdf or shematic file circuit driver dc motor 24 v for automatic door(left or right fasrt speed and low speed by pwm and countering rpm by shaft encoder ) by mosfet and L99H01 chip or masfet and ir 2102 chip

thank you

please send now
i am a waiting

]]> By: genotio http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-435 genotio Tue, 19 Jan 2010 20:47:08 +0000 http://roko.ca/?p=44#comment-435 Note that you can put 2 or more mosfets in paralell. Rdson will be smaller, but driver will be more loaded. Note that you can put 2 or more mosfets in paralell. Rdson will be smaller, but driver will be more loaded.

]]> By: John Essen http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-431 John Essen Wed, 13 Jan 2010 05:40:15 +0000 http://roko.ca/?p=44#comment-431 A clearly written article on this subject, it answered all my questions. Thanks Roko A clearly written article on this subject, it answered all my questions.
Thanks Roko

]]> By: Martin Kynde http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-422 Martin Kynde Sun, 13 Dec 2009 13:28:20 +0000 http://roko.ca/?p=44#comment-422 Hallo Roko I think you have right. Sorry for the confusing Hallo Roko

I think you have right. Sorry for the confusing

]]> By: Roko http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-416 Roko Wed, 02 Dec 2009 16:47:05 +0000 http://roko.ca/?p=44#comment-416 Hi Martin, I believe you're confusing the operation of P and N channel FETs. As the paragraph below figure 3.2 states, the P and N channel fets are activated by opposite polarities. Thus, the interface circuit is correctly set up to provide a high signal to Q4, and a low signal to Q1 to switch them both on, while ensuring that the others are off. Hi Martin,

I believe you’re confusing the operation of P and N channel FETs. As the paragraph below figure 3.2 states, the P and N channel fets are activated by opposite polarities.

Thus, the interface circuit is correctly set up to provide a high signal to Q4, and a low signal to Q1 to switch them both on, while ensuring that the others are off.

]]> By: Martin Kynde http://roko.ca/robotics/h-bridge-fundamentals/comment-page-1#comment-415 Martin Kynde Wed, 02 Dec 2009 11:52:48 +0000 http://roko.ca/?p=44#comment-415 Hallo I am studying electronics. The interface circuit would not work! Q1 and Q4 has to work together, and Q2 and Q3, else the motor would not turn in any direction. Just swap Q1 with Q2 on figure 3.2, then it would work :-) Hallo

I am studying electronics. The interface circuit would not work! Q1 and Q4 has to work together, and Q2 and Q3, else the motor would not turn in any direction. Just swap Q1 with Q2 on figure 3.2, then it would work :-)

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