mos驱动电路

wujl7002

<>我给Q1,Q3栅极5V电压驱动电机后，Q1的V漏源电压是4V，Q3的漏源电压是0.02V。Q1发热严重，Q3不发热。电机的转速也不快，不知道是什么原因.请高手指点指点。&nbsp; 还有mos管很热DS的电阻变小了，这有影响吗？</P><P>&nbsp;</P><P><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600">&nbsp;<v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comffice:office" /><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 414.75pt; HEIGHT: 300.75pt" type="#_x0000_t75"><v:imagedata o:title="" src="file:///C:&#92;DOCUME~1&#92;ADMINI~1&#92;LOCALS~1&#92;Temp&#92;msohtml1&#92;01&#92;clip_image001.emz"></v:imagedata></v:shape></SPAN></P>

whut_wj

<>图？</P><P>&nbsp;</P>

wujl7002

<><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600">&nbsp;<v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comffice:office" /><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 414.75pt; HEIGHT: 300.75pt" type="#_x0000_t75"><v:imagedata o:title="" src="file:///C:&#92;DOCUME~1&#92;ADMINI~1&#92;LOCALS~1&#92;Temp&#92;msohtml1&#92;01&#92;clip_image001.emz"><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600">&nbsp;<v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 414.75pt; HEIGHT: 300.75pt" type="#_x0000_t75"><v:imagedata o:title="" src="file:///C:&#92;DOCUME~1&#92;ADMINI~1&#92;LOCALS~1&#92;Temp&#92;msohtml1&#92;01&#92;clip_image001.emz"></v:imagedata></v:shape></SPAN></v:imagedata></v:shape></SPAN></P><P><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">我上传图了怎么看不见啊？</SPAN></P><P><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"></SPAN>&nbsp;</P><P><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"></SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">&nbsp;</P></SPAN>

zhadaolong

过饱和吧。

benlajun123

我的也是，可以减小负载来解决，比如采用二路并联来解决

benlajun123

采用二路来解决，今天我也出现了这个情况