December 11, 2014 at 10:58 AMDec 11, 2014 What can cause master brick restarting ? When i switch my desk lamp http://www.top3dmodels.com/uploads/desk_lamp_sample_solid_main.jpg in about 15cm from my wires master brick restarts. It also happend to me while driving DC motor from DC brick (full forward, full backward, and so on) Both cases are fully reproductable. How can i prevent this ?
December 11, 2014 at 12:20 PMDec 11, 2014 The reason seems to be EMI (http://en.wikipedia.org/wiki/Electromagnetic_interference) Especially inductive loads like motors can generate high voltages when switching them off. Some counter meassures: Flyback Diode parallel to the motor or parallel to the relais. Varistors..... Snubber (resistor and capacitor). See also TF documentation: http://www.tinkerforge.com/en/doc/Hardware/Bricklets/Dual_Relay.html#dual-relay-inductive-load-switching There is a lot of information in the net about this. Example: http://www.sealevel.com/support/article/AA-00470/0/How-to-Switch-Highly-Inductive-Loads-Using-Digital-I-O.html
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