dominik Posted January 12, 2005 Report Share Posted January 12, 2005 I am a bit confused about the ongoing discussion of power supply units for the Midibox.Since I am not an electrical engineer, I am a bit lost when trying to compute what exactly is needed.My plan is to build a standard Midi LC clone (including the Core, all proposed DOuts, and a MF module). I have already bought the wall adapter propsed by TK in the Reichelt part list for the core module (max. 500 mA)I switched it to 12 V to be able to directly connect it to the MF module (in parallel to the Core module connection).Will this set up cause any problems?What happens, if I decide to build a LC XT clone? Will I need a new power supply? I don't know how to calculate the expected current and what the consequences of this calculation may be.A confused Newbie happy for any help,Dominik Quote Link to comment Share on other sites More sharing options...
shed Posted January 12, 2005 Report Share Posted January 12, 2005 have a look at thishttp://www.ucapps.de/midibox_lc/midibox_ng_switching_psu.pdfi think you need to have a seprate 7-10 volt supply for the core or the 7805 will get very hot. ed Quote Link to comment Share on other sites More sharing options...
dominik Posted January 12, 2005 Author Report Share Posted January 12, 2005 OK. Of course, I have already read this.I thought, the heating of the 7805 mainly depends on the current. Am I wrong?Dominik Quote Link to comment Share on other sites More sharing options...
shed Posted January 12, 2005 Report Share Posted January 12, 2005 in this post it is sugested that you put the input to the core through a 7809 before a 7805http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=misc;action=display;num=1061917936But also im not sure of the curent drain of the mf module. I think it is quite large.<edit>it is 1A it says here http://www.ucapps.de/mbhp/mbhp_mf_interconnections.pdf</edit> Quote Link to comment Share on other sites More sharing options...
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