https://devzone.nordicsemi.com/f/nordic-q-a/25354/after-disconnected-why-does-electric-current-increaseNow facing the problem &quot;After disconnected, the electric current increases&quot;... I think softdevice is working hard even after disconnected when connecting once. Could you tell me how to back to the calm state of softdevice by sd function(s) Is thereen-USTelligent Community 13Wed, 27 Sep 2017 04:32:19 GMThttps://devzone.nordicsemi.com/thread/99923?ContentTypeID=1Wed, 27 Sep 2017 04:32:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b88f9ce-e487-48b8-bcf1-d9e06321548bhiroponie<p>I finally found the way to solve that. I made a change to the way to use ADC, with &quot;adc_low_power&quot; instead &quot; ble_app_uart_adc_simple&quot; in nrf51-ADC-examples. I could reduce the current in using ADC. Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99922?ContentTypeID=1Thu, 21 Sep 2017 13:09:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9979a0e0-7cf6-4c45-aa0c-abc7a2e0c7b6hiroponie<p>Dear Martin Thank youfor your replying in detail and giving useful advice so much. I&#39;ll re-investigate it with eva-boards(nRf51/nRf52) again. Needs some time.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99919?ContentTypeID=1Thu, 21 Sep 2017 09:17:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eadce04f-65f0-4ff6-bd7c-4bbb3f6c390fMartinBL<p>Sounds strange.</p> <ul> <li>Do you transfer a lot of data? That would explain ~5mA during connection. The radio and occasional CPU activity will drive the current up, but assuming the CPU is sleeping in between BLE event the average current is not as high as if the CPU was on continuously.</li> <li><a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/cpu.html?cp=2_1_0_6_1_0#unique_285360707">10mA might sound like the CPU is running continuously</a> and that you don&#39;t use the DCDC converter. Is that correct?</li> </ul> <ol> <li>Have you debugged your code to see what, if anything, your application is doing after a disconnect? Maybe it is stuck in an error handler, or waiting for some sort of event for a peripherals?</li> <li>What, if any, peripherals do you use? UART, ADC, etc.?</li> </ol><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99918?ContentTypeID=1Thu, 21 Sep 2017 08:38:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50f4d302-261c-4f44-9e7d-c57992f23d25hiroponie<p>About 5mA to 10mA, appreciate your quick responses.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99917?ContentTypeID=1Thu, 21 Sep 2017 08:20:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ebe0565e-2c38-4ded-9549-f51ea68affc9MartinBL<ol> <li>And how many micro or milli amperes would that be? The value might give us a clue about what is going on.</li> </ol><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99921?ContentTypeID=1Thu, 21 Sep 2017 07:46:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4c712741-b3c9-49ee-b109-2cfaa7b6a650hiroponie<ol> <li>twice</li> <li>yes</li> </ol><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99920?ContentTypeID=1Thu, 21 Sep 2017 07:41:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fa1a06b8-1f46-4aab-b349-c052cfce3dd0MartinBL<ol> <li>How much does the current increase?</li> <li>Does your application continue to work as expected even after the current has increased?</li> </ol><div style="clear:both;"></div>