Electronic pet dog - what is the internal structure?

Jane Medium ： This article disassembles an electronic pet dog in the early years ,  I was deeply impressed by the wonderful design of its internal machinery and Electronics . Although its function is simple , But it still accompanied me through many unforgettable days and nights .

key word ： Electronic pets , Electronics

Electronic pet dog

 

§01 electric Son pet dog

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One 、 brief introduction

   This small electronic pet dog has been placed in my office for many years .  Years have changed the color of its plastic shell .  After power on , It can still move .  Make sounds from time to time , Make the lonely room highlight some vitality .  It is planned to be dismantled and cleaned today , Make a final farewell .

  

Two 、 Remove the housing

   Next, first remove the electronic pet shell .  There are many screws on the shell .  It is difficult to disassemble the screws on the head .  Now open the head .  There are also some gear transmission structures .

     
   Next, we will continue The body shell of the electronic pet dog is opened .  Internal complex gear transmission structure It surprised me, an electronic engineer .  After disassembly , Design of mechanical part , I can't see clearly ,  The rest is to learn the design of the electronic part .
  

3、 ... and 、 electronic design

   This is all the electronic components inside the electronic pet dog .  Including two circuit boards 、  Two dynamic speakers 、  An electret microphone 、  A small DC motor 、  A headphone jack 、  A touch sensor .

  
   Among them, touch sensor is more interesting ,  It should actually belong to mechanical structure .  It consists of two springs that can deform , After deformation, the spring can touch the metal frames on both sides .  It is actually used to detect whether the tail of a pet dog is shaken ,  Metal ore phase is equal to common electrode ,  The left and right are two contacts .  The dog's tail can fluctuate, and the metal springs on both sides can touch the common electrode .  This is a simple and reliable tail flick Sensor .

  
   The head circuit board is the most complex electronic circuit .  It includes integrated chips with two circuit boards .  The first function is unknown ,  The second one should be SCM ,  The ceramic resonator next to it , The frequency is 3.58MHz.  This is the head circuit board .

  
   The most interesting thing about the head circuit board is its colorful back LED.  He includes a total of seven colors LED.  Through the front plastic shell , It can display dynamic brilliance . 
     
   This is the second circuit board ,  It includes three integrated chips ,  The star SOP8 Packaged IC, The surface model cannot be seen clearly ,  It's probably an audio power amplifier .  This larger one JK30 Recoverable fuse ,  It seems to be out of tune with other devices here .

  
   Other electronic devices , There is not much novelty .  Keep it for their other use .

  
 

※ total    junction ※

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   Ben The article disassembled an electronic pet dog in the early years ,  I was deeply impressed by the wonderful design of its internal machinery and Electronics . Although its function is simple , But it still accompanied me through many unforgettable days and nights .

  

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