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electronic:equipment:phone:lkd2ns [2026/08/31 19:27] – [Examples] tonyelectronic:equipment:phone:lkd2ns [2026/09/26 09:57] (current) – tony
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 +<html><p style="text-align:right;">Published  6 Sep 2022</p></html>
 +<html><p style="text-align:center;"><b><font size="6">LG LKD 2NS</font></b></p></html>
 +\\
 +{{ :electronic:equipment:phone:a.jpg?200|LKD 2NS overview}}
 +===== Overview =====
 +\\
 +
 +===== Hardware description =====
 +==== Components ====
 +  * National Semiconductor TP3057 ‘‘Enhanced’’ Serial Interface CODEC/Filter 
 +  * 74HC123D Dual retriggerable monostable multivibrator
 +  * ON  TL494CD 40V, 0.2A 300KHz Pulse Width Modulation controller
 +  * QFR EUCA0000301 F6N33-000 0132 Rev. 1
 +  * 1458 Dual operational amplifier
 +
 +===== Examples =====
 +
 +/*{{:electronic:equipment:phone:a.jpg?800|LKD 2NS top}}\\*/
 +{{:electronic:equipment:phone:dsc_1724a.jpg?600|LKD 2NS front}}
 +{{:electronic:equipment:phone:dsc_1725a.jpg?600|LKD 2NS back}}
 +
 +----
 +
 +===== Tear down =====
 +
 +{{:electronic:equipment:phone:dsc_1726a.jpg?800|LKD 2NS interior}}
 +{{:electronic:equipment:phone:p4137542a.jpg?600|LKD 2NS interior}}
 +{{:electronic:equipment:phone:p4137543a.jpg?600|LKD 2NS interior}}
 +
 +{{:electronic:equipment:phone:p4137545a.jpg?400|LKD 2NS keyboard top}}\\
 +{{:electronic:equipment:phone:p4137546a.jpg?400|LKD 2NS keyboard front}}\\
 +{{:electronic:equipment:phone:p4137544a.jpg?400|LKD 2NS keyboard back}}
 +
 +{{:electronic:equipment:phone:p4137538a.jpg?400|LKD 2NS PCB front}}\\
 +{{:electronic:equipment:phone:p4137539a.jpg?400|LKD 2NS PCB back}}
 +
 +====== References and Additional Resources ======
 +
 +<html><small><p>If any referenced page no longer exists, try looking for its URL on <a href="http://archive.org">http://archive.org</a>.</p></small></html>
 +\\
 +
 +----
 +<html><div style="text-align:center">&nbsp;</html>[[:start|Home Page]]<html>&nbsp;&nbsp;&nbsp;</html>[[:about|About this Site]]<html>&nbsp;&nbsp;&nbsp;</html>[[:copyright|Copyright Questions]]<html>&nbsp;&nbsp;&nbsp;</html>[[:contact|Contact Us]]<html></div></html>\\
 +\\
  

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