LM317T Voltage Regulator with Pass Transistor

This is a quick video review of the Turnigy Servo Speed Regulator This device can be found at HobbyKing.com at the below link: www.hobbyking.com Please remember to visit HobbyKing.com for all your RC related needs. www.hobbyking.com



http://www.youtube.com/watch?v=gyQIzej8X2w&hl=en

The controller is regulating battery voltage now. Target voltage has been set at 14.2 volts. The display LED shows a PWM simulation when target battery voltage is reached (this doesn't show up too well on the video), and a series of flashes when it's below target voltage. 1 flash for 11 volts, 2 for 12 volts, 3 for 13 volts etc. It also shows a series of rapid flashes if voltage drops below 10.5 volts. The LED can be turned off altogether if desired to save power. With the LED turned off, the controller takes very little current - about 0.5 milliamps, that's just 500 microamps! Future developments will include detection of excessively long cables between the battery and the controller or excessive current flow. Also voltage measurements will be more discriminating to get a more precise, more stable feedback control. Part of 'designing a solar charge controller' at www.256.co.uk



http://www.youtube.com/watch?v=UPVzB2HY-Dg&hl=en

A variety of clips we put together of the first BIG www.RcSuperhero.com aircraft All designs are copyrighted. to get the $19.95 PDF plans go to www.RcSuperhero.com



http://www.youtube.com/watch?v=4kDC5J33eoo&hl=en

www.vintagecollectiblememorabilia.com has acquired a 1920's Master Violet Ray. This medical therapeutic device is also called a Quack Medicine Gadget, for reasons of having special effects but no medical healing powers. Unique and hard to find in working order in this condition; all parts are present and both clear glass tubes are in perfect condition. The main body, massage unit, plugs into a 110 volt 20 amp. outlet, (household plug) and has a voltage regulator knob on the bottom. Adjusting the voltage knob increases or decreases the neon violet ray's intensity. Resembling lightning or sorcerers magic ball, as seen in science fiction movie, this gadget would be a great piece to add to your collection. See this for sale at rover.ebay.com Visit us at www.vintagecollectiblememorabilia.com



http://www.youtube.com/watch?v=2RIxkTdQT5s&hl=en

Variable Power Supply using lm317 adjustable voltage regulator and lm7805 5v voltage regulator (for digital read out). Homemade printed circuit board with transformer in mineral oil bath. Made for an electronics class using parts mostly from Radio Shack. The printed circuit board was made using a presensitised board and positive developer. A standard acid etchant was used after that.



http://www.youtube.com/watch?v=N6RlTHCeGtM&hl=en

vclassmotorsport.com.Mitsubishi Lancer 2.0 GT with Qmax energy saver and performance parts.voltage stabilizer+grounding cable+air ionizer+fuel ionizer to boosts the engine with more horse power, more fuel saving and better response.Just take few min to install and without modification (DIY). Tested by Malaysia Pro-tuners Magazine editor.



http://www.youtube.com/watch?v=ja8Qm5q6kPM&hl=en

Help! I've been bitten by the vintage stereo equipment collecting bug...here is another 1980s Technics stereo receiver in good working condition. From the looks of it, this was a highly basic model. It offers only 25 watts per channel of output power into an eight ohm load, tuner, tape play/record and turntable inputs. There is no AUX input, although the tape playback input can be used as such. I need to clean up the tuner memory backup battery holder. There is also a capacitor on the main board that looks to have been a little warm, as it was leaned up against a very hot voltage regulator. I may replace it. I also removed a ton of dust from the inside.



http://www.youtube.com/watch?v=3RhVa5hHKdQ&hl=en