Why dont Robots use energy storage ?

 Robots might use servo motors or even solenoids , but there
 is a much better way , but it is not easy to empliment ,
mechanically .

  Your old VW had a Beilstein jack .
  Using springs and the above method to quickly
 lock movement , in a robot , can be impressive .

        We have all seen the Honda robot .  Maybe they use
        this methodology , i dont know .

   very large solenoids and very fast locking , can
   give very fast and accurate response .

  Solenoids must be driven with efficient "buck"
 regulators .  They are oscillating types ,
  the bipolar transistor is driven by the same coil
 that it is driving .
   They approach 95% eff '
  They can deliver a 25 amp pulse in microseconds
   You could create PWM , with them .

    They are so fast , if an arm had such a drive ,
 you could maybe teach your robot to "box"
 ( as a pugilist .)
    The springs are what improve the efficiency .
 if you had no springs to store this quick energy ,
 then you circuit must waste energy "controlling"

   Common buck regulators , waste drive to the
 bipolar transistor , but my circuit adds another
 winding to drive the base of B' T' .
   The free running freq is above 400 Khz .
   This means , when you enable it , the B' T'
 turns on very fast and then saturates the core
 and shuts down , but it starts up again , since its
 an oscillator .
   The simple control pulls the coil to ground
 and "sets" the output DC voltage .

  This circuit is far simpler and safer than even
  the LM494 used in IBM PC pow supplies ,
  because it saturates the ferrite core .
      But there is no future for the old
  non-saturating core , I.C. controlled ,
   pow supplies .
      even in Flour' lites , they dumped
   the controller I.C. and instead osc' it
   and saturate the core .

   Emmiter is output , so the base drive coil ,
  can fully saturate the  B'T' ,  wastes less heat ..

  If you try to store energy in air , you will
 waste too much heat .
  Springs work well , dont get hot .


    The next problem is , compound eyes .
   I remember seeing a I.C. that had a array
   a hole cut in the top of an early DRAM memory .