Page 231 - 15 Dangerously Mad Projects for the Evil Genius
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R3         2.2


                            Live                                      T2
                          S1b
                                  Off

                             Test                                                N
                                              R4         100



                                      D1



























                                                                                               A schematic diagram example
                                                  R2        1K      R1         100K


                      T1




                 Off
            Live      Test

          S1a

                                       6V  4 x AA
                                                                                               Figure A-1






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