luzik Posted December 11, 2014 at 10:58 AM Share Posted December 11, 2014 at 10:58 AM 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 ? Quote Link to comment Share on other sites More sharing options...
raphael_vogel Posted December 11, 2014 at 12:20 PM Share Posted December 11, 2014 at 12:20 PM 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 Quote Link to comment Share on other sites More sharing options...
luzik Posted December 14, 2014 at 05:28 PM Author Share Posted December 14, 2014 at 05:28 PM Thank You ..i will try! Quote Link to comment Share on other sites More sharing options...
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