CPM169
New Member
Hi everyone, this is my first post here. I'm a novice and would like help with this circuit (see JPG file below). I need a N/O push-button to activate a relay for less than one hour. This relay would switch power between a solar cell and a 9-V battery.
I'm guessing that the solution would be to drain a capacitor at a slow rate through the relay coil.
I would like to use the existing 9-V battery to run this new circuit if possible.
This is a present for my daughter and I don't want the battery to die too soon because she will forget to switch it back to solar power at one point I'm sure.
Thanks in advance for you time helping me!
I'm guessing that the solution would be to drain a capacitor at a slow rate through the relay coil.
I would like to use the existing 9-V battery to run this new circuit if possible.
This is a present for my daughter and I don't want the battery to die too soon because she will forget to switch it back to solar power at one point I'm sure.
Thanks in advance for you time helping me!