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Recent content by somegeek

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    [SOLVED] Simple Low-voltage Circuit switch for 4.8V pack powering LEDs?

    Thanks for the input, picgak. I went ahead and posted on another board and have an active thread there. somegeek
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    [SOLVED] Simple Low-voltage Circuit switch for 4.8V pack powering LEDs?

    picgak, I removed Rf however the OpAmp output is negative regardless if I have an input of 3V or 5V to this circuit. **broken link removed** Thoughts?
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    [SOLVED] Simple Low-voltage Circuit switch for 4.8V pack powering LEDs?

    Thanks for the reply, picgak. I worked on this a bit tonight using the circuitlab.com simulator but came up short. Any direction you can provide here? I have a 3.9V zener diode in there and when I set input voltage to 3.9 my output voltage is 6.3V. 3.8V takes the output down to 3.925V. 4.8V...
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    [SOLVED] Simple Low-voltage Circuit switch for 4.8V pack powering LEDs?

    I built my kids a couple of 'control boxes', least that's what they call them. :) They have 4.8V 700mAh NiCd battery packs in them. The LEDs are wired with 100Ω resistors. I'd like to put a low voltage light on the box, a type of simple circuit that would shut power to the main circuit and...
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