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Std EditionRC Model redundant BEC V2

Profile:I made my own redundant BEC module for RC models. It takes full battery voltage (usually 4 or 6 lithium cells in my case) and regulates it down to around 5 volts to power servos and other electronics.

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Published Time:2021-04-26 04:58:58
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Description

My design uses two separate LM2576 switching regulators that power the output through diodes to isolate them. I also have an extra output filter to minimize ripple and voltage spikes. My goal with this project was to create something that is more heavy-duty and reliable than most cheap BEC modules for RC models you can buy.

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PCB_RC Model redundant BEC V2

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ID Name Designator Footprint Quantity
1 100uF C4,C1,C3,C6 CAP-D8.0XH10.5 4
2 1000uF C2,C5 CAP-D10.0XH10.5 2
3 FC-3215GHK-570A08 LED1,LED2 1206 LED AXBRI 2
4 1K R6,R5,R11,R12 1206 4
5 3K3 R4,R10 1206 2
6 pad OUT1,GND2,GND1,VCC1 SMD-SOLDER-PAD-3X3MM_AXBRI 4
7 LM2576SX-ADJ U2,U1 TO-263-5 2
8 0.33R R8,R2,R1,R7 R2512 4
9 SSB44-E3/52T D4,D1,D2,D3 SMB_L4.6-W3.6-LS5.3-R-RD 4
10 22uH L2,L4 IND-SMD_L10.8-W10.0_SLO1040H 2
11 100uH L1,L3 IND-SMD_L13.5-W12.6_125CDMCC-DS 2

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