Thanks for your help. Because the chopper isn’t lowering the current at all, can anybody explain how to do this? As usual, the maximum level of the voltage as input is limited by the positive regulator 5V therefore, in this case, the voltage is lowered by a zener and a npn transistor tip41c before the input of the regulator. Since i can’t find anything wierd on the board, i’m asking if anyone can spot any errors in the schematic or board layout, i have checked the board about 10 times for solder bridges or stuff like that so i don’t think that’s the problem. Do you have this problem?
|Date Added:||14 March 2015|
|File Size:||35.96 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
To adjust the tension of course need a multimeter connected between mass and a measure Vref l62203 a screwdriver and adjust the trimmer on the basis that you want to get on the engine.
Open Source Controller Boards > my L L doesnt work ??
I’m sorry, i don’t understand what you mean, i’m not good at reading schematics what does it do? Thanks, i googled around a bit and read about vref, this is what i came up with: This is necessary because the maximum input tension level is limited to 20V for a 78L05 and V for a 78H05 but usually less and depends by the manifacturer.
Since i can’t find anything wierd on the board, i’m asking if anyone can spot any errors in the schematic or board layout, i have checked the board about 10 times for solder bridges ,6203 stuff like that so i don’t think that’s the problem. This ic can provide a higher current upto 5A therefore it is possible the use of bigger motors or, using the same motors, obtain a reduction of the heat generated.
Page 1 of 2 1 2 Last Jump to page: Ed behold the birth of the bridge that I present here. The schematic is very traditional and efficient.
In our case, with a resistor of. It employs two integrated L that each pilot phase and a L which is responsible for the translation of step and implements the chopper.
L6203 L297 H-Bridge Stepper Motors Driver Circuit
Hello dudes, i have assembled a board using this schematic http: Open Source Controller Boards. On the base of the bridge is a trimmer and next to it a measure called Vref.
I even built a whole cnc funzionante. Results 1 to 12 of Nothing more to say, the schematic is very traditional and follows the directives of the application notes of the ic involved.
Do you have this problem? Originally Posted by MagooT. Follow us on All times are GMT Guess it’s time to etch a new board an try it out.
Note that the resistance of sense of this bridge with a total resistance of 0. I have fixed the problem now but it still won’t run.
Electronics for CNC apparates.