seavote
Well-known member
while checking out a mic pre project from Elektor Electronics 2/2003 i came across this info. "coupling capacitors c4 and c5 are specially marked in the schematic diagram. the marking indicates the lead connected to the outer foil of the capacitor,which should be connected to the non-critical side of the circuit.Many types of film capacitors are correspondingly marked.The result is that the capacitor screens itself,thereby reducing the suseptability of the circuit to interference." i have never heard of this. i checked some film caps i have and could not find any indication of which lead was which. i have not (but will)checked the specs. is this technique based in sound theory? how much difference will it make in a circuit? it seems like it may be a good practice to adopt. but how can you tell which lead is from the outer end of the foil? the article is pdf otherwise i would post