Hey guys,
I want to make circuit http://electroschematics.com/6239/invisible-alarm/#comment-259231 but I dont find the ic CA 3140 does CA 3130 useful or what can I do for this problem???
thanks in advance
I want to make circuit http://electroschematics.com/6239/invisible-alarm/#comment-259231 but I dont find the ic CA 3140 does CA 3130 useful or what can I do for this problem???
thanks in advance