A MAX232 level shifter

I have built a level shifter...:

• http://www.amateurfunkbasteln.de/rs232level_shifter/rs232level_shifter.html

Some more information on similar projects:

• http://www.compsys1.com/workbench/On_top_of_the_Bench/Max233_Adapter/max233_adapter.html
• http://www.digisolutions.de/c5umbau/pegelwandler.html
• http://www.digisolutions.de/schaltungen/RS232_DL2RCG.pdf
• http://www.digisolutions.de/c5umbau/pictures/Pegelwandler.png

The building of the little device is finished. Important: The pumping of the level shifter consumes a lot of energy, so it is definitely necessary to provide 3.3 V.

Credits: Michael Wöste, dl1dmw at qsl.net, who has provided the PCB for a very reasonable and fair price.