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</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoPlainText>Hi list,</p><p class=MsoPlainText><span style='color:black'>I have a question about the behaviour of transistor type flip-flop circuit<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>When the DC power is applied to it..<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>The following schematic of Boss CE-2 pedal shows the flip-flop at the bottom right.<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>Why when the DC power is applied : collector of Q6 goes high (to make the pedal in the ‘no effect’)<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>And it’s not Q7 that goes this way instead ?<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>I know that C23 (.01uf) pull down the trigger input when DC is applied<br>to put the pedal in the ‘no effect’ position, but why is Q6 selected ?<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>This is a ‘balanced’ flip flop circuit and both sides should behaves the same<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'>But some kind of selection is done here.<o:p></o:p></span></p><p class=MsoPlainText><span style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black'>Could someone explain that behaviour ?<o:p></o:p></span></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><img width=896 height=536 style='width:9.3333in;height:5.5833in' id="Image_x0020_1" src="cid:image001.jpg@01DA5432.4483D780"><span style='color:black'><o:p></o:p></span></p></div></body></html>