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{"cards":[{"_id":"26654f08dc82bca083000012","treeId":"26654f1adc82bca083000010","seq":23039119,"position":1,"parentId":null,"content":"Then eight in series is 26.4V, which is higher than the LED input voltage. Therefore, booster type constant current source should be used. However, in order to reduce the current to 100mA, the forward voltage at this time is only 2.8V, and the eight series are 22.4V, and the load voltage becomes lower than the supply voltage. Thus the booster type constant current source will not work at all and the step-down type should be used instead. For a boost type of constant current source must work in the buck is not good, and finally LED will appear flashing phenomenon. In fact, as long as the boost type constant current source is used, when the forward current is dimmed at very low brightness, flicker will almost certainly occur. At that time, the LED load voltage must be lower than the power supply voltage. \n\nCommon-Cathode CC <a href=\"http://www.lanpade.com/7-segment-led-dot-matrix/3202aw.html\" style=\"color: #333;\">3202AW</a> 7-Segment digit <a href=\"http://www.xlitx.com/datasheet/3202AW.pdf\" style=\"color: #333;\">3202AW</a> LED Common-Anode CA <a href=\"http://www.lanpade.com/7-segment-led-dot-matrix/3202bw.html\" style=\"color: #333;\">3202BW</a> Display <a href=\"http://www.xlitx.com/datasheet/3202BW.pdf\" style=\"color: #333;\">3202BW</a> 0.30 inch\nCommon-Cathode CC <a href=\"http://www.lanpade.com/7-segment-led-dot-matrix/cl3022aw.html\" style=\"color: #333;\">CL3022AW</a> 7-Segment digit <a href=\"http://www.xlitx.com/datasheet/CL3022AW.pdf\" style=\"color: #333;\">CL3022AW</a> LED Common-Anode CA <a href=\"http://www.lanpade.com/7-segment-led-dot-matrix/cl3022bw.html\" style=\"color: #333;\">CL3022BW</a> Display <a href=\"http://www.xlitx.com/datasheet/CL3022BW.pdf\" style=\"color: #333;\">CL3022BW</a> 0.30 inch\n\n<hr style=\"border:1px solid;\">\n\n<a href=\"https://gingkoapp.com/led-load-voltage-must-be-lower.html\" style=\"color: #333;\">LED load voltage must be lower</a>\n<a href=\"https://gingkoapp.com/led-brightness-low-key-with-reduced-voltage.html\" style=\"color: #333;\">LED brightness low-key with reduced voltage</a>\n<a href=\"https://gingkoapp.com/different-leds-with-current-and-output-curves.html\" style=\"color: #333;\">Different LEDs with current and output curves</a>\n<a href=\"https://gingkoapp.com/the-working-ratio-change-led-brightness.html\" style=\"color: #333;\">The working ratio change LED brightness</a>\n<a href=\"https://gingkoapp.com/led-heat-dissipation-technology.html\" style=\"color: #333;\">LED heat dissipation technology</a>\n<a href=\"https://gingkoapp.com/led-lamp-work-is-stable.html\" style=\"color: #333;\">LED lamp work is stable</a>\n<a href=\"https://gingkoapp.com/heat-management-with-high-brightness-led.html\" style=\"color: #333;\">Heat management with high brightness LED</a>\n<a href=\"https://gingkoapp.com/heat-dissipation-for-highlight-led.html\" style=\"color: #333;\">Heat dissipation for highlight LED</a>\n<a href=\"https://gingkoapp.com/led-device-to-extract-heat-from-p-n-junction.html\" style=\"color: #333;\">LED device to extract heat from P-N junction</a>\n<a href=\"https://gingkoapp.com/led-lamp-surface-radiation-heat-treatment.html\" style=\"color: #333;\">LED Lamp surface radiation heat treatment</a>"}],"tree":{"_id":"26654f1adc82bca083000010","name":"LED load voltage must be lower","publicUrl":"led-load-voltage-must-be-lower"}}