LM317T Voltage Regulator with Pass Transistor

Here is me showing off my newly made, custom PSP charger, and the schematics for the soldering. I used a 7805 +5VDC Voltage Regulator (1 amp) Radio Shack part # 276-1770.



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How to check the generator on a Harley



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New Episodes each Monday! You can download the parts list and the code from this episode on my website: jeremyblum.com Watch my TechBits Episode on Analog and Digital Signals: www.youtube.com Watch Jeri Ellsworth's video on Amperes: www.youtube.com Submit your arduino project to element14's arduino contest for a chance to win a soldering station: www.youtube.com This tutorial series is sponsored by element14. Check out their arduino group! www.element-14.com Follow me on twitter: www.twitter.com



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Motorcontroller_10-26-2011.mp4 I had designed a very high power motor controller that originally ran using a 555 timer that was setup for pulse width modulation. However; Problems where found with 0% and 100% duty cycles, and issues with reliability of the 555 under this kind of use. A pic18F26J11 8 bit microprocessor was used for the PWM drive and would also be leveraged for the additional features required for protection circuits and some miscellaneous other tasks. The ten Mostfets are 61-65 amps at 200V rating providing a 600-650 amp motorcontoller with a surge capability of 2500 amps for 10ms. Two high power fast diodes are incorporated on the ends of the mosfet strings to handle back EMF from a motor. I think these are 200 or 250 amp rated (will have to look later) so I am hoping this is enough to protect the mosfets. A single NPN transistor is used to setup up the 3.3v logic output of the microprocessor to 10-12 volts required to drive a 15 amp gate driver chip which does the fast switching to keep the mosfets cool. This gate driver needs only 5.5 volts minimum to switch the mosfets high. However this driver needs 10-12 volts in order to supply that voltage to the mosfets for a good strong switching affect with 10v being optimal to the gates. I burnt up a LM317 adjustable voltage regulator with some of the mosfet power oscillations which was used to drive the logic circuitry so in this video a 12v zener diode with voltage drop resistors was used to power the pic18 ...



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My 1978 Kawasaki Invader 440 Liquid Cooled beuty got it for 200 bucks and now have installed and done new windshield ignition coil voltage regulator brakepads rebuilt both carbs replaced all fuel and oil lines fuel and oil gauges buffed polished and cleaned great sled



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DC to DC voltage booster using the 555 timer IC. Note: I said "voltage" a few times where I meant to say current.



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DISCLAIMER: I AM NOT RESPONSIBLE FOR ANYTHING THAT MIGHT HAPPEN TO YOURSELF OR YOUR ELECTRICAL DEVICE. THIS VIDEO IS FOR EDUCATIONAL PURPOSES ONLY AND SHOULD ONLY BE ATTEMPTED AT YOUR OWN RISK. if you need any help building this, pm me and I'll be happy to help



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this video shows the difference in battery voltage dont forget to subscribe



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Do these voltage stabilizers from ebay really work? Well, I set out to answer that very question by doing some experiments of my own. ----NEW info------ Electronic specs off the main capacitor = 4700uf 25V



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1N4148 diodes 100k pot with 1k resistor in series 2.2uF and 10uF capacitors 5v voltage regulator



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And they can sound good, despite low power... have to use a better supply filtering and an LM7808 voltage regulator, have to increase the output condensers to 1000uf and have to install small condensers from input and output live wire to ground..use 100n into input and output (0.001uf).... install 1uf non polarized capacitor in parallel with the output electrolitic condensers too..they are for high frequency bypass purposes...from plus to minus into those two condensers you have into the PC speaker integrated circuit output.. inside the box... also, if possible, move the transformer place to have more distance not to pick noises from mains Open holes over end under the enclosure to create convection cooling



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T-Rex 700 Turbine Engine: Wren 44 Helicopter Engine Conversion Kit: www.heli-chris.de Servos: 3 x BLS 452 1 x BLS 251 Flybarless System: Microbeast Voltage Regulator: Scott Gray Reactor X2 Radio System: Futaba (T10+R6108SB) Main Blades: Radix



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I demonstrate how to hook-up the regulators on an oxygen, acetylene and nitrogen tanks to get them ready to braze. The guy in my intro that wears the pink shirt and wig is edbassmaster. You can check him out at: www.youtube.com The music was played and composed by Champagne Millionaire. You can check him out at: profile.myspace.com Attention: Do not try any of what you see in this video at home. It takes at least two years of HVACR schooling to become qualified to learn in the field how to work on heating and air conditioning equipment. Then it takes another three years of apprenticeship training to become competent enough to safely work on heating and air conditioning equipment.



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Day 1: Voltage Regulated, Current Limiting, Power Supply Regulator. Takes unregulated 15-25 volt supply and provides a regulated 2.7-13.8 volts with selectable current limiting. I suggest building it with a 20-30 mA limit, and a larger one, several hundred mA, or whatever your transistor can dissipate in the worst case.



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This is the 9DoF Razor IMU from SparkFun www.sparkfun.com The board that I got has some problem with the on-board magnetometer which gives the Yaw output. I traced the problem to its power supply. Whenever I supply a regulated 3.3V directly to the board from a FTDI breakout (from SparkFun designed for ZigBee Modules), the sensor works fine. But, when I supply a regulated 5V from the same FTDI board and use the IMU's on-board voltage regulator, the magnetometer malfunctions and the Yaw output simply converges to 'SE' direction no matter in which direction you point the IMU. Here, I am powering the IMU using the 3.3V output from the FTDI board and you can observe that the sensor is working fine and the Yaw output is correct. PS :- I have written a simple tutorial on how to get started with this IMU and changes in the code that I have made. You can read it here pranjalchaubey.wordpress.com



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Ferroresonant UPSThe majority of pulse power units have a serious disadvantage. There is a power supply break when the unit is switched into battery operation and back. The break occurs because mechanical switches are used. Their actuation time is only several milliseconds but still it is different from zero. It would be nice if a UPS had some smart gadget inside for maintaining load voltage while the switch is actuated. Such gadget was actually invented in the US in 1938 by Joseph Solo. It is called a ferroresonant transformer.To a certain extent, a ferroresonant UPS is a variety of uninterruptible power supplies which interact with the main. However, there is component introduced into this UPS circuit which changes its operation drastically. This is a ferroresonant transformer. It is connected into a ferroresonant UPS circuit instead of the autoconnected transformer with taps in the UPS circuit which interacts with the main. So, its functions are as follows. It stabilizes voltage across the UPS output. This allows operating in a wide range of supply voltages without switching into battery operation. There is also no switching inside the UPS itself. A ferroresonant transformer controls voltage and does not require taps switching. A ferroresonant transformer has a considerable inductance. A great amount of energy accumulates in the transformer's magnetic field during the UPS operation from the main. When power supply stops the transformer supplies the energy which has ...



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Visit our Solar Workshop at www.energymatters.com.au for more info on this topic & other solar education videos . A regulator, or charge controller, controls the amount of charge from a solar panel to a deep cycle battery. Learn more about these magic electronic boxes and also the role of shunts from Ben.



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This is a video detailing one of the processes I use to design, create, and etch circuit boards (PCBs)



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A quick walkthrough and descriptions of popular RaceTech Electric parts. RaceTech Electric manufactures motorcycle and powersports stators, voltage regulators (regulator-rectifiers), field coil charging rotors, and more. In this video we show you some of our popular manufactured components and show you the features and important details of our parts.



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www.docstoc.com here is stan meyers circuit for making HHO.... basic circuit.....he used this as his display. electrical resonance needs to be between the inductor and the cell.....voltage will go up.... just like meyer said. FREE ..................... SAVE OUR PLANET........ NOW........... i could not resist posting this. others want to hide it...... others have no idea how to read it....... others think you will give them money , just because they have it...... the multi billion dollar secret.............FREE now the world has it.............what will you do with it?



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This video shows a DC to AC power inverter that has a regulatet output voltage, and there is no intergrated circuit used. The 50Hz square wave signal gets generated by a 2 transistor oscillator. The 50hz square wave signal then gets amplified with driver transistors, which "drive" the fullbridge that consists 2 TIP122 and 2 TIP127 darlington transistors. So this fullbridge switches the transformer to the power supply and changes it´s polarity - that results AC and this AC is beeing amplified by the transformer. The voltage regulation system consists mainly a voltage divider and a transistor that is "pre biased" and then gets negative voltage from the voltage divider. The NPN transistor then amplifies the difference from these voltages and leads it to the TIP127 PNP transistor which is mainly reliable for the power that gets fed into the transformer. This power inverter does not have that good efficiency. The transistors get pretty hot after some minutes of running the CD radio that I showed. Also the input voltage must be at least 6V higher than the transformer voltage...With a 18V transformer, and 24V input to the power inverter I was able to power a 230V 40W bulb at it´s normal brightness, but the bulb was "flickering" so I don´t know if that came from the power supply or the inverter. This project is rather some kind of "proof of concept" project that I made, but I will share the circuit diagramm soon so you can re built the inverter if you want. The frequency is ...



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This is an electronically fired pulse motor. It is using a device called a " step down adjustable switching regulator" that is 90% efficient to control the supply voltage . A small solar panel is used to supply energy to a 5Ah 12v lead acid battery. That energy is then metered out to the motor thru the regulator. More energy goes into battery during the day than the motor consumes. At night the motor runs on the stored energy. The pulse motor circuit is a John Bedini patented design.



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Model No. 145:- The main motto of the project is to utilization of sensor with combination of embedded equipment for the door opening systems. This project describes the design and implementations of automatic controller for the door. The door opens when any human movement is detected near the door it detects with help of a PIR (Passive infrared) sensor detects the movement and sends a signal to the transistor, in turn gives interrupt signal to a programmable microcontroller of 8051 family, the output signal form the microcontroller is fed to the DC motor which is used to open the door and close the door which is driven by a motor driver IC. Interrupt signals can be used to stop power to the motor in the event of locked rotor condition. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more info visit efxkits.com



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Joaquim Pedro Ribeiro (ALSTOM)



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Easy installation allows adjustable voltage



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How to install a Variable Voltage Regulator (VVR) in your guitar tube amp to control the power output! Blog post: www.soundgaragetales.com Hall Amplification: www.hallamplification.com VVR wiring diagram soundgaragetales.com Gabriel V33 head amp: www.gabtone.com Scratchy Volumes tweaks diagram: soundgaragetales.com Photo set: www.flickr.com Please subscribe to my channel, and give thumbs up to this video! Also please leave a comment!!



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you'll find the schematic and dl.dropbox.com



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The magneto alternator of Royal Enfield Motorcycle UCE EFI G5 has 18 coil 3 phase stator that charges 12 volt battery. The alternator electric output is directly affected by the speed of motorcycle engine (rpm). Alternator generated AC of 15 volts when engine was running at idle and it increased to 40 volts as throttle was opened to high rpms.



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