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0 and fre>0 and pac>0 and ptype='osc' and otype=60 and svoltage>0 and ltype>0 ";
//echo $query;
$result = mysql_query($query) or die('Query failed: ' . mysql_error());
$total2 = mysql_num_rows($result);
while ($line = mysql_fetch_assoc($result)) {
$opid=$line['skuid'];
$pack=$line['pack'];
$frange=$line['frange'];
$rohs=$line['rohs'];
$series=$line['series'];
$pdf=$line['pdf'];
$thumb=$line['thumb'];
$pic=$line['pic'];
$feature=$line['reel'];
$revision=$line['revision'];
$svolt=$line['svoltage'];
$otype=$line['otype'];
$ltype=$line['ltype'];
$spic=$line['spic'];
$pdfpos = strpos($pdf, "ploads");
if ($pdfpos) {
$pdf="admin/".$pdf;
}
if ($qpro==osc and $qosc==NULL) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="Oscillators:";
}
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype]." | ".$feature;
if ($qpro==osc and $qosc==61) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="VCXO:";
}
if ($qpro==osc and $qosc==62) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="OCXO:";
}
if ($qpro==osc and $qosc==63) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="TCXO:";
}
if (strlen($pdf)<4) {
$pdfval=" ";
} else {
$pdfval=" ";
}
echo <<
 |
$series |
$pack
$fea |
$frange |
$pdfval
|
$revision |
$rohs |
END;
}
if (!$total2) {
echo <<
There's no product in the requested search criteria. Search Again » |
END;
}
?>
| A crystal oscillator (sometimes abbreviated to XTAL on schematic diagrams) is an electronic circuit that uses the mechanical resonance of a physical crystal of piezoelectric material along with an amplifier and feedback to create an electrical signal with a very precise frequency. A crystal oscillator is an especially accurate form of an electronic oscillator. This frequency is used to keep track of time (as in quartz wristwatches), to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters. Crystal oscillators are a common source of time and frequency signals. The crystal used therein is sometimes called a "timing crystal". |
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