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<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005>Zdravim,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>mam L297 + 4
tranzistory + 4 diody, unipolarny krokovy motor vybrakovany z
tlaciarne. pri L297 je 2xHC00, zapojene (takmer) podla jedneho AN od
ST.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>moja otazka : pri
zvysovani napatia od 0 vyssie su stavy :</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>1. male napatie,
motor este nejde, </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>2. napatie akurat ,
motor ide, </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>3. napatie vyssie
(20 V cca), prud klesa, </SPAN></FONT><FONT face=Arial size=2><SPAN
class=934525611-14112005>motor sa zastavuje</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>preco 3 existuje
?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>upozornujem, ze
parametre motora nepoznam, pekne sa toci okolo 10V, vtedy berie cca 2 A, odpor
polvinutia je zhruba 4 ohmy.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>ked sa tak pozeram
do ds L297 tak sa mi zda, ze kedze tam je PWM a je zapojena tak by to malo aj
pri zvysujucom sa napajacom napati drzat konstantny prud...</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=934525611-14112005>vopred vdaka za
pomoc</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=934525611-14112005>p.rosko</SPAN></FONT></DIV></BODY></HTML>