Is it possible to make a timed switch with analog circuits?
In other words. I have to press a switch for longer than... let's say one second for the circuit to trigger. Basically I want to make something that cannot be accidently pressed - you need to press and hold it down for a x amount of time. Almost like the switch on a computer.
I have tried a 555 timer, but I'm missing something.
Is it possible to make a timed switch with analog circuits?
In other words. I have to press a switch for longer than... let's say one second for the circuit to trigger. Basically I want to make something that cannot be accidently pressed - you need to press and hold it down for a x amount of time. Almost like the switch on a computer.
I have tried a 555 timer, but I'm missing something.
Connect the input to a capacitor/resistor --> this to a comparator. Set the comparator to trigger at a certain voltage level. The time to fully charge the cap (...well to a certain percentage) will determine the trigger.Connect the comparator to an analog switch (4066 chip). if you press it longer enough (time) the switch will be activated.