kicad/pcb_calculator/attenuators/pi_formula.md

## Pi attenuator
__Zin__ desired input impedance in &#x2126;<br>
__Zout__ desired output impedance<br>
__Zin = Zout__<br><br>

* __a__ attenuation in dB
* __L = 10<sup>a/20</sup>__ (the loss)
* __A = (L + 1)/(L - 1)__<br><br>
* ___R2 = (L- 1)/2 \* &radic; ( (Zin \* Zout) / L)___
* ___R1 = 1/( A/Zin - 1/R2 )___
* ___R3 = 1/ (A/Zout - 1/R2 )___
convert last formula to markdown. Make them translatable. 2019-09-29 16:54:14 +00:00			`## Pi attenuator`
minor fixes about translatable help files in markdown 2019-10-01 07:56:35 +00:00			`__Zin__ desired input impedance in Ω<br>`
convert last formula to markdown. Make them translatable. 2019-09-29 16:54:14 +00:00			`__Zout__ desired output impedance<br>`
			`__Zin = Zout__<br><br>`

			`* __a__ attenuation in dB`
			`* __L = 10<sup>a/20</sup>__ (the loss)`
			`* __A = (L + 1)/(L - 1)__<br><br>`
Add an other markdown to html converter (sundown), better to convert markdown. The previous converter (maddy) is still available, during some time. We therefore have the time to choose between them. sundown is better to convert a md text, but is written to C maddy has a few issues to convert a md text, but is written to C++ Both have no dependency. 2019-10-01 16:38:54 +00:00			`* ___R2 = (L- 1)/2 \* √ ( (Zin \* Zout) / L)___`
convert last formula to markdown. Make them translatable. 2019-09-29 16:54:14 +00:00			`* ___R1 = 1/( A/Zin - 1/R2 )___`
			`* ___R3 = 1/ (A/Zout - 1/R2 )___`