A logic gate chip with 1 ea XOR and 2 ea AND gates?

[aratti]

Latching solenoid are just a normal solenoid with the addition of a permanent magnet. When you connect the coil (Red to + and Black to 0) the magnetic field attract the iron core and when the core is in contact with the permanet magnet it will be hold without the need of the magnetic field generated by the coil. So to activate it you just keep the coil connected for a very short while.

If you need to de-activate the solenoid, you will need to generate in the core a reverse magnectic field so that the core will be pushed away from the permanet magnet holding it. To obtain such a result you simply reverse the current flow into the coil, connecting the Red to 0 and the Black to + and hoops the solenoid has released the core.

If you connect both wire to zero volts or both wire to +9 volts nothing will happen, and when I say nothing I mean it (no current will circulate at all), and the solenoid will keep is position. This is the max I can say to assure you.

Have a nice day.

Al.

[falingtrea]

Instead of putting the battery terminals on the common of the relay, put the solenoid terminals on the common pins, and use a DPDT relay. Wire the N.O. pins with power and ground and wire the N.C. terminals opposite of the N.O. ones. With a DPDT relay you only need one control pin also.