crwdns2936039:0Blendtec Total Blender Teardowncrwdnd2936039:09crwdne2936039:0

crwdns2933803:09crwdne2933803:0

crwdns2933797:0Walter Galancrwdnd2933797:0Ndz 14, 2009crwdne2933797:0

	[* black] Removing the speed sensor.
	[* black] Aptly named, the speed sensor monitors the speed of the spinning shaft. Should things get out of hand, the sensor will shut off the motor.
-	[* black] The speed sensor uses ~~the [link\|http://en.wikipedia.org/wiki/Hall_effect\|Hall effect]~~ to tell the control circuitry how fast the shaft is spinning.
-	[* black] Blendtec informed us that the Total Blender includes what they call a "hammer-fire" system. The main ~~IC controller~~ will trigger this system if it detects that the blade stopped spinning. The controller will send a series of strong electric pulses with the intent to free the blades from the obstruction. If that fails, the IC will shut off the motor to prevent any damage.
+	[* black] The speed sensor uses inductive pickup to tell the control circuitry how fast the shaft is spinning. Inductive pickup is triggered by ferrous metal passing by in close proximity causing a current to be induced in the pickup. This is really the same effect used by an electric guitar to pick up the string vibrations.
+	[* black] Blendtec informed us that the Total Blender includes what they call a "hammer-fire" system. The main microprocessor will trigger this system if it detects that the blade stopped spinning. The controller will send a series of strong electric pulses with the intent to free the blades from the obstruction. If that fails, the IC will shut off the motor to prevent any damage.