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mission:resources:ezvd [2016/04/11 22:15] – chronomission:resources:ezvd [2016/04/12 06:19] – [EZVD - Easy Voltage-Divider Calc-/Simulator] chrono
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 When you migrate from just learning by copying open-source hardware designs/schematics towards creating your own electronic designs and solutions, you'll sooner or later will be confronted with the task of designing and selecting the right resistors for a certain voltage divider.  When you migrate from just learning by copying open-source hardware designs/schematics towards creating your own electronic designs and solutions, you'll sooner or later will be confronted with the task of designing and selecting the right resistors for a certain voltage divider. 
  
-In the past, online-tools like [[http://www.sengpielaudio.com/calculator-voltagedivider.htm|this]] have been a great companion in the process, however, a little research showed that this is really not as trivial as it may seem in the beginning, especially when used as an input divider for an ADC. +In the past, online-tools like [[http://www.sengpielaudio.com/calculator-voltagedivider.htm|this]] have been a great companion in the process, what can go wrong, it's just two simple resistors, right? Well, after a little more research it seems that it's actually not as trivial as it may did in the beginning, especially when used as an input divider for an ADC. 
  
 {{:mission:resources:screencast.gif|EZVD Output on the console (python/ncurses)}} {{:mission:resources:screencast.gif|EZVD Output on the console (python/ncurses)}}
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 With EZVD you can simulate and instantly assert your design choices and get warnings for certain constraints you can set: With EZVD you can simulate and instantly assert your design choices and get warnings for certain constraints you can set:
  
-  * Power Efficiency (how much power will it cost to drive the divider) +  * Power Efficiency 
-  * Design Efficiency Indicator Bar (maximum resolution vs. clipping)+    * How much power will it cost to drive the divider? 
 +    * How much power is dissipated in each Resistor? 
 +      * Determines package/thermal management decisions 
 +      * Determines temperature increase of package which changes its own resistance 
 +  * Design Efficiency Indicator Bar (wasted resolution vs. clipping)
   * Analog Reference Voltage (ADC)   * Analog Reference Voltage (ADC)
   * VD output impedance (to match ADC input muxer circuit, which lowers the ADC input impedance)   * VD output impedance (to match ADC input muxer circuit, which lowers the ADC input impedance)
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