Page 230 - 15 Dangerously Mad Projects for the Evil Genius
P. 230

R3
                            Live
                          S1b
                                  Off
                             Test
                                              R4
                                      D1






                                                                                               A schematic diagram example

                                                  R2  2.2   100   1K   R1  T2  100K   N

                      T1




                 Off
            Live      Test

          S1a

                                       6V  4 x AA
                                                                                               Figure A-1






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