Hi, I have 5V relay that receives very short burst of power, to eliminate false positives I would like that my relay would be on longer. What size electrolytic capacitor I need to use? Do I need to use diode to protect my circuit from the capacitor current backflow?
I use relay in this circuit instead of buzzer:
https://www.velleman.eu/downloads/files/schema/receiver.jpg
I added resistor to make 5V instead of 9V for the relay.
I use relay in this circuit instead of buzzer:
https://www.velleman.eu/downloads/files/schema/receiver.jpg
I added resistor to make 5V instead of 9V for the relay.