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  1. K

    microsecond power loss durring relay switch over

    I have a relay that switches between 2 power sources. I noticed that there is a microsecond loss of power to the load during the NC - NO switchover going from power source 1 to 2. im scratching my head. how to compensate for that micro second loss. I need continuous power to the load. the...
  2. K

    noob transistor question

    Hello, em.. so I have a question about finding the right transistor. I have a 3volt coin battery that operates a 3v relay switch. I need an NPN transistor with a minimum base of 500ma and the collector and emitter to support 3V. can someone suggest a transistor for me? I have a hard time...
  3. K

    very simple transfer switch

    Hello, I am trying to make a very small simple transfer switch. what I have is a solar cell and a battery pack. I would like to kick over to the battery pack when the solar cell is not producing enough power. I am guessing some sort of transistor will do the trick. can anyone point me...
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