Circuits & Schematics: Volt - 10
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- .. and connect the wires to the inside of the MP3 player’s Play button. Replace the transformer with the nine-volt DC wall adapter. Connect the five-volt voltage regulator’s input to the adapter, and attach its outputs to ...20-11-2007
- .. batteries are the scourge of cellphone jockeys and iPod people everywhere. But you can avoid volt loss by charging your gadgets while you carry them. Just equip an old messenger bag with a lightweight, ...16-11-2007
- .. solar panel. The later was the way we choose. A solar panel. Our recommendation is the PowerFilm WeatherPro Solar panel 7.2 volt 200 mAh which costs $ 56.95 from Sundance Solar. This company was also the best in terms of service and quality ...16-11-2007
- .. you need.. I chose to use a Sony remote control (SR-P30) because it has plenty of room inside to add my circuit and a 9 volt battery while keeping the remote fully functional. The circuit parts: 1. Small circuit board 2. (1) 10 k variable ...06-11-2007
- .. design. First is a 6 amp Polyswitch fuse, it is self-resetting, and also protects against high temperatures. Next is an 18 volt surge absorber. Finally, the circuit has current limiting using a method I invented that limits based on ...31-10-2007
- .. is amplified by the CA3140 opamp. This is configured as a differential amplifier and will produce an output of about 1 volt per uA of input current. The photodiode, can be placed up to a meter or so away from the circuit. Screened cable ...27-10-2007
- .. A 470 uH coil works on lower frequencies and lie in AM, for shortwave try a 20 uH coil. This unit can be powered by a 9 volt alkaline battery. If a power supply is used, bypass the power supply with a 0.04 uF capacitor to prevent noise ...10-02-2007
- .. is the 9 volt GS transmitter which does not use a crystal. This clever design allows only two transistors to generate both the ...08-03-2005
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