CLIE2007.10.23 15:18

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저항색에 따른 값 알려주는 프로그램도 있던데 이런 프로그램도 있네요.
연습문제 풀 때 공학용 계산기로 힘들게 계산하던 기억이 나네요.
아쉽게도 상용 프로그램입니다.

  For figuring everything from Ohm's Law to VSWR, nothing else even comes close. Try the free trial of Electrist and see why electronic engineers in some of the finest R&D laboratories in the world, industrial maintenance crews, power utilities, RF & audio engineers, circuit designers, telecom engineers, Ham operators, electronics hobbyists, and fanatical Do-It-Yourselfers - among others - love this software. With a user interface, features, and formulas found in no other software backed up with world-class customer service, it's no wonder!
   Even though it's the finest formula calculator by a long shot, it's even more than that. Electrist does seamless NEC ampacity look-ups to automatically give you the correct wire and cable sizes for any application - in both the AWG and Metric standards. You can also input any conductor's size, length, and material properties - from PCB traces to busbars - and accurately find the voltage drop.
   Sizing panels & transformers is also a snap with the built in load calculator. Enter any number & configuration of delta or wye/star and 3 phase, line-to-line, line-to-neutral, and/or centertap-to-neutral to instantly get both the phase and line loading in current, true power, and apparent power.

The most complete set of calculations - hundreds of formulas & variations:
  * Integrated Ohm's Law/Watt's Law
  * Resistor Color Code
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  * Series/Parallel Resistance/Inductance/Capacitance
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  * Unknown Value of Parallel Resistance/Parallel Inductance/Series Capacitance
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  * Voltage/Current Dividers
  * Capacitive/Inductive Reactance
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  * Series/Parallel Resistive/Inductive/Capacitive Impedance & Impedance Current)
  * Peak/Peak-to-Peak/RMS/Average Sine Wave Conversion
  * Wavelength/Frequency/Period/Velocity
  * Delta/Wye Conversion
  * RC/RL Time Constant
  * dB Power/Voltage Gain/Attentuation, dBu,dBm,dBW,dBuV,dBV Decibels (with either equal or unequal impedances)
  * VSWR
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  * Resonant Frequency
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  * Periodic Waves
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  * Conductor Voltage Drop (single or parallel conductors)
  * Conductor Size Selection (single or parallel conductors)3 Phase Load Calculator (Requires OS 3.5 or newer,
    but all other calculators will still operate on devices running OS 3.0+)
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  * 3 Phase NEMA & IEC Negative Sequence Voltage Unbalance
  * 3 Phase Power (true power, apparent power, and reactive power)
  * Power Factor Correction
  * Cost of Use
- The easiest, fastest, and most advanced user interface available:
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  * Use AWG, Metric, and custom conductor sizes (such as defining PCB trace or busbar sizes)
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  * Create custom conductor materials
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  * Calculate ANY parameter of most formulas
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  * Effortlessly scale values from 1 pico- to 1 Tera- ranges
  * Unique scale-lock control keeps value displayed in selected range
  * Enhanced Clipboard makes your work even easier and faster:
      o Cut & Paste full unscaled values
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      o Direct access with functions assign, add to, subtract from, clear, and invert
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  * Each formula clearly displayed at the top of each form
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  * Map functions to any of the hard keys and navigator buttons
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  * Built-In MiniCalc not only performs all the functions of a common calculator, but also many conversions
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    useful to electrical professionals
- Fully compatible with any Palm OS device from system 3 to 6 whether color or monochrome

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