View Full Version : How to make a HBrigde

05-09-2005, 12:00 PM
Hi Friends,
Can anyone tell me where can I find good information on making H Bridges (For controlling motors). And those of you who have made one please tell me from where you have got the information so that I can get a tested schematics.I have tried to make one but it is not working.Please help. :wink:

E-Mail avinashjsr@sify.com

05-09-2005, 01:29 PM
See this


05-12-2005, 09:19 AM
Go through RI ... ther's already a lot of info on H-Bridges

05-12-2005, 10:33 AM
why build one.
use a chip that has hbridges on it.
use L293.

05-12-2005, 12:39 PM
jacks posts sums up almost everything to know bout H-bridges
if u use a power IC....and if loads are below 0.5 amp...use L293D
the 'D' stands for a version of L293 with internal diodes, saves a lot of soldering, also L298 would be a nice option for higher loads

12-04-2005, 12:07 AM
enough h ridge configurations r there in the forum....
jus search in the forum... u ll get all the info u ever need on h bridge designing......................
u can also use drivers like l293d if the current ratings of the motors is less .

12-05-2005, 07:18 AM
unless if you want a higher rating...

you can build a bridge the same way using four discrete power MOSFETs/SCRS

and some 1n4007 diodes for surge protection

12-06-2005, 10:18 AM
HI ,
you can use L298 for higher current rating. It has dual hbridge each can source upto 2A. If u want more then u can connect the 2 hbridge on L298 in parallel to get 4A current rating.