101 Spy Gadgets for the Evil Genius 2/E

101 Spy Gadgets for the Evil Genius 2/E

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This fully updated bestseller will further entice electronic hobbyists to build high-tech devices and counteract some of the spy gadgets available on the market._a#39;|a#39;aquot;TLaquot;-a#39; Figure 5-5 Some infrared LEDs include a band pass filter in their casings . specified as optical power output in milliwatts per steradian (mW/sr). ... Figure 5- 6 shows the simple series wiring diagram that is used to divide the 12-V battery pack down to 1.2 V per LED. ... 1.285 V. You might get away with slightly more voltage, though, but expect some failures when exceeding device limitations. + 12vanbsp;...

Title:101 Spy Gadgets for the Evil Genius 2/E
Author:Brad Graham, Kathy McGowan
Publisher:McGraw Hill Professional - 2011-10-21


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