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(i believe that) Meredith asked for a Theremin-like means for turning water on and off: the water source could be a bottle with a siphon hose and clamp or inverted bottle with hose and clamp; clamp could be controlled by some kind of motor, maybe stepper motor, which would be controlled by the Theremin-like circuit.  
 
(i believe that) Meredith asked for a Theremin-like means for turning water on and off: the water source could be a bottle with a siphon hose and clamp or inverted bottle with hose and clamp; clamp could be controlled by some kind of motor, maybe stepper motor, which would be controlled by the Theremin-like circuit.  
  
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  Theremin did create a rotating cake for Clara Rockmore's 18th birthday, when she moved near    
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  Theremin did create a rotating birthday cake for Clara Rockmore, when she moved near the cake,    
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the cake, it would rotate. Here is a picture: http://www.hologlyphics.com/electriccake-1.jpg  
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  it would rotate! here is a picture: http://www.hologlyphics.com/electriccake-1.jpg  
  
 
Use MOSFETS instead of bipolar diodes: the voltage drop across a standard diode is about 0.7 Volts. It seems it's possible to use a MOSFET (metal oxide over semiconductor field effect transistor) as a diode in drain follower mode. The voltage drop is much less than across a standard diode. as more amperage goes through the diode, more power is wasted. also for circuits with very low voltage power sources, because there is very little voltage drop, more voltage is available for the circuit load. I'd like to build a circuit or two to test this. Applications include remote, low-power systems.  
 
Use MOSFETS instead of bipolar diodes: the voltage drop across a standard diode is about 0.7 Volts. It seems it's possible to use a MOSFET (metal oxide over semiconductor field effect transistor) as a diode in drain follower mode. The voltage drop is much less than across a standard diode. as more amperage goes through the diode, more power is wasted. also for circuits with very low voltage power sources, because there is very little voltage drop, more voltage is available for the circuit load. I'd like to build a circuit or two to test this. Applications include remote, low-power systems.  

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