Calculators and Electronic Design Aids

Calculators are Tools that can get you math right for you. Many need this aid as they cannot quickly learn number patterns. EE design needs many custom calculators to make product development easy.

Electronics Calculators – These calculators are useful when configuring the headphone amplifiers discussed on this site.

The Chemandy calculators are designed to be easy to use and follow a common theme and layout where possible. Most of them have been used for several years now and complaints about their accuracy or functionality are very rare.

Besides classical functions and dB conversions, RadioCalc includes a converter of Power to field strength commonly used for EMC/EMS test-set-up. Also impedance can be represented as a function of reflection coefficient (somehow like an electronic Smith-chart). This and many other functions are obtained by clicking into the arrow of the “Conversion off” window.

Radiocalc – Convertisseur Radio Universel

Thanks to RadioCalc the different dB charts are obsolete by computing the ratios of Power (W) or Voltages (V) according to dB = 10*log(P2/P1) ou dB = 20*log(V2/V1).

Just for a trial : type 100/10 (or just 10) and push the dB button as the ‘W’ mode is chosen, the result will be 10 dB, then choose the ‘V’ mode by clicking in the V button (in the Quick dB window) push again dB, the result is now 20 dB.

From – Temcom – Consulting for test & measurement and electronics in France
(This was Earlier Radiocalc, i have now updated the link to the new site in France)