Searching \ for '[EE] H-Bridge' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/io/motors.htm?key=h%2Dbridge
Search entire site for: 'H-Bridge'.

Exact match. Not showing close matches.
PICList Thread
'[EE] H-Bridge'
2010\02\14@051306 by Lucas Tanure

picon face
Hi, I need a H-Bridge circuit.  Anyone know a good H-Bridge circuit? I use
the L293b, but I need more than 2A current.

Thanks


Lucas A. Tanure Alves
Equipe de Desenvolvimento Gogo Board Brasil
Skype : lucas.tanure
+55 (19) 88176559

2010\02\14@053304 by Wouter van Ooijen

face picon face
Lucas Tanure wrote:
> Hi, I need a H-Bridge circuit.  Anyone know a good H-Bridge circuit? I use
> the L293b, but I need more than 2A current.

'more than 2A' can be 2.01A, 10A, 100A, 1kA?

--

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu

2010\02\14@095353 by Lucas Tanure

picon face
Something like 3A or 4A.



Lucas A. Tanure Alves
Equipe de Desenvolvimento Gogo Board Brasil
Skype : lucas.tanure
+55 (19) 88176559


On Sun, Feb 14, 2010 at 8:32 AM, Wouter van Ooijen <spam_OUTwouterTakeThisOuTspamvoti.nl> wrote:

{Quote hidden}

> -

2010\02\14@112809 by Bob Blick

face
flavicon
face

On Sun, 14 Feb 2010 08:12:50 -0200, "Lucas Tanure" said:
> Hi, I need a H-Bridge circuit.  Anyone know a good H-Bridge circuit? I
> use
> the L293b, but I need more than 2A current.

Hi Lucas,

This H-Bridge is good to 5 amps as shown:

http://bobblick.com/techref/projects/hbridge/hbridge.html

Cheerful regards,
Bob

--
http://www.fastmail.fm - Email service worth paying for. Try it for free

2010\02\17@071953 by Forrest Christian

flavicon
face
lmd18200

On 2/14/10 3:12 AM, Lucas Tanure wrote:
> Hi, I need a H-Bridge circuit.  Anyone know a good H-Bridge circuit? I use
> the L293b, but I need more than 2A current.
>
> Thanks
>
>
> Lucas A. Tanure Alves
> Equipe de Desenvolvimento Gogo Board Brasil
> Skype : lucas.tanure
> +55 (19) 88176559
>    

2010\02\17@114302 by Lucas Tanure

picon face
Thanks!!!!


Lucas A. Tanure Alves
Equipe de Desenvolvimento Gogo Board Brasil
Skype : lucas.tanure
+55 (19) 88176559


On Wed, Feb 17, 2010 at 10:19 AM, Forrest Christian <.....forrestcKILLspamspam@spam@imach.com>wrote:

{Quote hidden}

> -

2010\02\17@124409 by Lucas Tanure

picon face
wow too expensive!!


Lucas A. Tanure Alves
Equipe de Desenvolvimento Gogo Board Brasil
Skype : lucas.tanure
+55 (19) 88176559


On Wed, Feb 17, 2010 at 2:42 PM, Lucas Tanure <ltanurespamKILLspamgmail.com> wrote:

{Quote hidden}

>> --

2010\02\17@130523 by Vitaliy

face
flavicon
face
Lucas Tanure wrote:
> wow too expensive!!

$18 is too expensive? What is your target price?


2010\02\17@135212 by Bob Blick

face
flavicon
face

On Wed, 17 Feb 2010 15:43:53 -0200, "Lucas Tanure" <EraseMEltanurespam_OUTspamTakeThisOuTgmail.com>
said:
> wow too expensive!!

I'd say "a little too expensive". The L6203 from ST is slightly less
expensive but comparable. The main problem is when a chipmaker gets into
parts that can handle 100 watt loads, they tend to add a feature here or
there so it will sell into a few different applications, and the price
goes up.

Small H-bridges are used everywhere, so they are plentiful and can be
more specialized, and cost a dollar.

If you design an h-bridge to meet your voltage, current, and frequency
needs with or without protection, then you can get the parts cost down.
But you will have had to design it and also fit it into your board.

If your current is low, bipolar h-bridges make sense and everything is
simple and inexpensive. Over a few amps, you start thinking MOSFETs.

If your motor voltage is 10-15 volts then it is real easy to design a
MOSFET h-bridge. If you want something that handles a broad voltage
range, it instantly gets twice as complicated.

A lot of "ifs" :)

What's your voltage?

Cheerful regards,

Bob

--
http://www.fastmail.fm - IMAP accessible web-mail

2010\02\17@142515 by David Harris

picon face
Umm, $20 for singles at Digikey.   These used to be cheaper.  You get  
more than a simple H-bridge, as these include all the added components  
such as MOSFET drivers, bootstrap circuit, and over-current -
temperature protection.   Nice chips.

David

On 2010-02-17, at 9:43 AM, Lucas Tanure <ltanurespamspam_OUTgmail.com> wrote:

{Quote hidden}

2010\02\18@000002 by Forrest Christian

flavicon
face
I have a design where I used to use the L6202's...  probably a total of
100pcs/month.   And, they were pretty much the leading cause of failures
and rmas.   Like probably a 3-4% lifetime failure rate.  A couple of
years ago, I switched to the LMD18200 and have yet to see a failed
LM18200.  Ever.   I haven't even been able to kill one on the bench when
abusing it on purpose.   Of course I didn't do something like put
thousands of volts through it, but things like dead shorts don't even
make the thing blink.

Of course, I buy them 250 or 500 at a time so the price isn't quite as
bad as the $18 in singles...    Still hurt but worth every penny.

-forrest

On 2/17/10 12:25 PM, David Harris wrote:
{Quote hidden}

2010\02\18@071015 by Lucas Tanure

picon face
I use the pic184550 and the lm2676t-5.0 , and this chip LMD18200 costs more
than these. This is my target price. I want to build a low cost board for
children.
I use two of the l293B, but if use the LMD18200  i need four, and it's too
much cost.



Lucas A. Tanure Alves
Equipe de Desenvolvimento Gogo Board Brasil
Skype : lucas.tanure
+55 (19) 88176559


On Thu, Feb 18, 2010 at 3:00 AM, Forrest Christian <RemoveMEforrestcspamTakeThisOuTimach.com>wrote:

{Quote hidden}

>

More... (looser matching)
- Last day of these posts
- In 2010 , 2011 only
- Today
- New search...