<TABLE id=HB_Mail_Container height="100%" cellSpacing=0 cellPadding=0 width="100%" border=0 UNSELECTABLE="on"><TBODY><TR height="100%" UNSELECTABLE="on" width="100%"><TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNSELECTABLE="off"><TABLE class=MsoNormalTable style="WIDTH: 100%; mso-cellspacing: 0cm; mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
555<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o> </TD><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
timer IC<o></o> </TD></TR></TBODY></TABLE>
<o
></o
>
Pin connections<o></o> <TABLE class=MsoNormalTable style="mso-cellspacing: 0cm; mso-padding-alt: 7.5pt 7.5pt 7.5pt 7.5pt" cellSpacing=0 cellPadding=0 border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 7.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 7.5pt; PADDING-BOTTOM: 7.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 7.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent">
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</TD><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 7.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 7.5pt; PADDING-BOTTOM: 7.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 7.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
You can use the 555 effectively
without understanding the function
of each pin in detail.
</TD></TR></TBODY></TABLE>
The 555 timer is an extremely versatile integrated circuit which can be used to build lots of different circuits.<o></o>
<o
></o
>
555 as a transducer driver<o></o>
A transducer is a subsytem which converts energy from one form into another, where one of the forms is electrical. In an output transducer, for example, electrical energy can be converted into light, sound, or movement.<o></o>
The output of a 555 timer can deliver more than 100 mA of current. This means that output transducers including buzzers, filament lamps, loudspeakers and small motors can be connected directly to the output of the 555, pin 3.<o></o>
</TD></TR><TR UNSELECTABLE="on" hb_tag="1"><TD style="FONT-SIZE: 1pt" height=1 UNSELECTABLE="on">
</TD></TR></TBODY></TABLE><TABLE class=MsoNormalTable style="WIDTH: 100%; mso-cellspacing: 0cm; mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
555<o></o> </TD><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
timer IC<o></o> </TD></TR></TBODY></TABLE>
<o
></o
>
Pin connections<o></o> <TABLE class=MsoNormalTable style="mso-cellspacing: 0cm; mso-padding-alt: 7.5pt 7.5pt 7.5pt 7.5pt" cellSpacing=0 cellPadding=0 border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 7.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 7.5pt; PADDING-BOTTOM: 7.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 7.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent">
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</TD><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 7.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 7.5pt; PADDING-BOTTOM: 7.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 7.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>
You can use the 555 effectively
without understanding the function
of each pin in detail.
</TD></TR></TBODY></TABLE>
The 555 timer is an extremely versatile integrated circuit which can be used to build lots of different circuits.<o></o>
<o
></o
>
555 as a transducer driver<o></o>
A transducer is a subsytem which converts energy from one form into another, where one of the forms is electrical. In an output transducer, for example, electrical energy can be converted into light, sound, or movement.<o></o>
The output of a 555 timer can deliver more than 100 mA of current. This means that output transducers including buzzers, filament lamps, loudspeakers and small motors can be connected directly to the output of the 555, pin 3.<TABLE class=MsoNormalTable style="WIDTH: 100%; mso-cellspacing: 0cm; mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>555<o></o> </TD><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 1.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 1.5pt; PADDING-BOTTOM: 1.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 1.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" vAlign=bottom>timer IC<o></o> </TD></TR></TBODY></TABLE>
<o
></o
>
Pin connections<o></o> <TABLE class=MsoNormalTable style="mso-cellspacing: 0cm; mso-padding-alt: 7.5pt 7.5pt 7.5pt 7.5pt" cellSpacing=0 cellPadding=0 border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 7.5pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 7.5pt; PADDING-BOTTOM: 7.5pt; BORDER-LEFT: #ece9d8; PADDING-TOP: 7.5pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent"><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m*4*5l*4*11*9*11*9*5xe" o
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ath o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v
ath><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 315.75pt; HEIGHT: 138pt" alt="555 timer pin connections" type="#_x0000_t75"><v:imagedata o:href="http://www.doctronics.co.uk/images/555_01.gif" src="file:///C:\DOCUME~1\Home\LOCALS~1\Temp\msohtml1\01\clip_im age001.gif"></v:imagedata></v:shape>
You can use the 555 effectively
without understanding the function
of each pin in detail.
</TD></TR></TBODY></TABLE>
The 555 timer is an extremely versatile integrated circuit which can be used to build lots of different circuits.<o></o>
<o
></o
>
555 as a transducer driver<o></o>
A transducer is a subsytem which converts energy from one form into another, where one of the forms is electrical. In an output transducer, for example, electrical energy can be converted into light, sound, or movement.<o></o>
The output of a 555 timer can deliver more than 100 mA of current. This means that output transducers including buzzers, filament lamps, loudspeakers and small motors can be connected directly to the output of the 555, pin 3.<o></o>
<o></o>
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