I have this project that requires me to create a RC timer circuit. i have built the circuit using a selector switch in which when R1 is connected to the 100uF capacitor a time delay of 1 min is created. when R2 is connected a time delay of 2min is created. and now i want to add in a seven segment display. i have a common cathode seven segment display. how shld i connect it so that whenever i change to a for example from R1 to R2 the seven segment display will show number 1 changing to 2? I need the circuit diagram.
And one more thing. after timing the capacitor gets charged up. and after everytime it is used, users have to press the switch parallel to the capacitor to drain the excessive charges in the capacitor before using it the next time. i heard we could use a relay to replace the switch. How then can we do it? i am using 11.5 V
And one more thing. after timing the capacitor gets charged up. and after everytime it is used, users have to press the switch parallel to the capacitor to drain the excessive charges in the capacitor before using it the next time. i heard we could use a relay to replace the switch. How then can we do it? i am using 11.5 V