DZ12488
New Member
Could someone help me with a circuit that would power 4 - 20ma SMD LEDs that are turned on / off via latching hall affect sensor on circular PCB that will be preassembled and integrated into the hockey puck.
TO OPERATE :The consumer would hold a magnet with north pole in right direction to turn on the leds . Puck would stay lighted as long as the hall affect sensor is not introduced to pole reversing OR magnet presence.
To turn off he would orientate the poles in opposite direction and the leds would switch off.
The supply voltage will be a single large button cell 3v battery in a holder on reverse side of pcb. I was hoping that the circuit would use no power or very very little power when it is turned off . Shelf life is very critical here . Could any one come up with a latching low power consumtion schematic that would turn on the leds via a megnet held to the exterior of the puck. I am hoping to mass produce this product once it is tested for its power longevity .
All ideas submitted will be reviewed and tested .If there is a Schamatic I select as the best or suitable for my application, will recieve a reward of $20.00 USD ! (Must have PayPal account.) I will contact you if you are the winner! More than one design increases your chances of winning. Thanks!
TO OPERATE :The consumer would hold a magnet with north pole in right direction to turn on the leds . Puck would stay lighted as long as the hall affect sensor is not introduced to pole reversing OR magnet presence.
To turn off he would orientate the poles in opposite direction and the leds would switch off.
The supply voltage will be a single large button cell 3v battery in a holder on reverse side of pcb. I was hoping that the circuit would use no power or very very little power when it is turned off . Shelf life is very critical here . Could any one come up with a latching low power consumtion schematic that would turn on the leds via a megnet held to the exterior of the puck. I am hoping to mass produce this product once it is tested for its power longevity .
All ideas submitted will be reviewed and tested .If there is a Schamatic I select as the best or suitable for my application, will recieve a reward of $20.00 USD ! (Must have PayPal account.) I will contact you if you are the winner! More than one design increases your chances of winning. Thanks!