Hello,
i have an audio system with pre-amplifier and power amplifier.
Pre-amplifier have an option to send 12v signal constantly from "trigger out" while turned on.
Power amplifier waits the 12v pulse for no more than 50 milliamps and no longer than about 0.5 second.
One pulse for turn on and one pulse for turning off.
Could you please help me with scheme that generate 12v one pulse on getting 12v in and another pulse when there is no more 12v in?
I saw some older thread while searching, but the pictures are no more available.
i have an audio system with pre-amplifier and power amplifier.
Pre-amplifier have an option to send 12v signal constantly from "trigger out" while turned on.
Power amplifier waits the 12v pulse for no more than 50 milliamps and no longer than about 0.5 second.
One pulse for turn on and one pulse for turning off.
Could you please help me with scheme that generate 12v one pulse on getting 12v in and another pulse when there is no more 12v in?
I saw some older thread while searching, but the pictures are no more available.