sheldonstv Posted May 15, 2006 Report Share Posted May 15, 2006 This is part of my current cctv camera mux :) its a very reliable circuit which has been in use for many years since i designed it..... Quote Link to comment Share on other sites More sharing options...
sheldonstv Posted May 15, 2006 Author Report Share Posted May 15, 2006 :P the supply connections for the 4093 are pin 7=0v,pin14 =+12v....... Quote Link to comment Share on other sites More sharing options...
audioguru Posted May 15, 2006 Report Share Posted May 15, 2006 Hi Sheldon,You have a nice circuit. ;DShouldn't the transistor have a resistor between its base and emitter to quickly turn it off? About 22k would be fine. Quote Link to comment Share on other sites More sharing options...
sheldonstv Posted June 3, 2006 Author Report Share Posted June 3, 2006 ;D yes that would ensure rapid turn off-but ive not had any problems with it ,the circuit seems to work quite well without it present....its been in use for quite a few years now with no failures.......the circuit is so simple there isnt really a lot to go wrong.regards mike Quote Link to comment Share on other sites More sharing options...
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