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55117 toroidal core
very easy to do this:
as Cyber1's circuit, elect a common inductor 220UH for L, and a ceramical cap 470p or 1000pF wiring to 3pin with GND, adjusting the R---75K as 15v output
manufacturer from china
hello everyone~
im a newer here and i'd like to introduce myself..we are OEM and ODM manufacture located south china-DongGuan city Guangdong province near ShenZhen 24km.we offer PCB design and SMT.AI.MI PCBA service also we can design hardware and plastic mold design...
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