building an electric bike motor

[mjbourquin]

I am trying to find a good place online or elsewhere to buy a hall effect sensor switch which senses a magnetic pole. I need it to be able to take a high voltage input since the motor could be running off of up to a 36V DC source. I've been searching online and have only found up too 24 Volts.

 

[(*steve*)]

typically you have a sensor and electronics which run at a lower voltage (typically 5V) which drives the power transistors which in turn switch your 36V