PmWiki | AT / CH4AnswersPart2

37. 500 Ohms

39. a)19.1mA

    b)45.8V
    c)for 1/8W R=343Ohms
      for 1/4W R=686Ohms
      for 1/2W R=1371Ohms

41. Add a 54kOhm pot to the ground side of the circuit. (This circuit has a very long solution!)

43. Group 1: RT=4.23k Ohms

    Group 2: RT=23.6k Ohms
    Group 3: RT=19.9k Ohms

45. Position A: I = 5.45mA

    Position B: I = 6.06mA
    Position C: I = 7.95mA
    Position D: I = 12mA

47. Position A: VR5 = 4.01V

                VR4 = 5.89V
                VR3 = 2.75V
                VR2 = 3.35V
                VR1 = 6.02V

    Position B: VR5 = 4.48V
                VR3 = 3.06V
                VR2 = 3.73V
                VR1 = 6.72V

    Position C: VR5 = 5.4V
                VR2 = 4.5V
                VR1 = 8.1V

    Position D: VR5 = 7.2V
                VR1 = 10.8V