On 09/25/2012 10:11 PM, Hegedűs István wrote: > Hi Gerrit, > > Reading back your posts I have one question. What is the purpose of the > 100nF ceramic parallel to the 4700uF capacitor? It's from the standard circuit for a 78xx-regulator. There you are supposed to put a ceramic capacitor between input and GND and output and GND. The idea, if I understand it right at least partially compensate for the rather 'slow' electrolytic capacitors in the case of fast load changes. Also, in the case of a real 78xx, they are supposed to keep it from oscillating. You plan to put a switching regulator there, those produce fast load changed on the input side. A ceramic cap can't really hurt. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2012-09-30 16:00:05
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