so, i m quite having a proble, its deadline is 13 hours from now.
i have 3 monostable cascaded with . 1st MS triggers from another circuit, then its output is to 2nd monostable, then to 3rd.
i have 2 relays used to reverse the cd rom motor.
1st monostable drives the transistor that drives a relay, opening the cdrom
2nd monostable is waiting time.
3rd monostable is to drive another transistor-relay that will close the cdrom.
my monostable circuit is working fine with no relays but after i add transistors and relays, abnormalities starts to occur,
sometimes 1 monostable skips, sometimes , 2 monostable is high, sometimes it turns to a loop which should not be.
what suppose is the problem..
i have 3 monostable cascaded with . 1st MS triggers from another circuit, then its output is to 2nd monostable, then to 3rd.
i have 2 relays used to reverse the cd rom motor.
1st monostable drives the transistor that drives a relay, opening the cdrom
2nd monostable is waiting time.
3rd monostable is to drive another transistor-relay that will close the cdrom.
my monostable circuit is working fine with no relays but after i add transistors and relays, abnormalities starts to occur,
sometimes 1 monostable skips, sometimes , 2 monostable is high, sometimes it turns to a loop which should not be.
what suppose is the problem..