LM317T Voltage Regulator with Pass Transistor

The project is designed to provide low voltage start to induction motors. This is achieved by using star to delta conversion. Star/Delta starters are probably the most common reduced voltage starters in the 50Hz industrial motor world. Star delta is used in an attempt to reduce the start current applied to the motor. Thereafter, full load current is applied to the motor. For more information about this project, visit www.edgefxkits.in Edgefx Technologies provides 100% output guaranteed electrical and electronics live project kits for 3rd & final year engineering students. We provide various types of projects like embedded projects, robotics projects, electrical projects and communication based projects and help to thousands of ECE and EEE students in improving their practical knowledge in electronics. For more details, visit www.edgefxkits.in



http://www.youtube.com/watch?v=eOG3jXS3uWg&hl=en

An explanation of how the circuit works for the dummy load and some tweaks to increase the constant current. --------------------- Click "Show more" ------------------------------- My website and forum:- www.mjlorton.com Donations and contributions www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http My Techie Amazon Store: astore.amazon.com My other channel VBlogMag - For almost any topic under the sun! - www.youtube.com My VBlogMag Amazon Store: astore.amazon.com ----------------------------------------------------------------------- Link to Kibi's "Dave Jones' dummy load with added features" : mjlorton.com Dave Jones / EEVblog video: www.youtube.com WHAT IS AN OP-AMP?: talkingelectronics.com My components: * Infineon MOSFET N-channel 200V 13.5A TO-220 - BUZ31L H * Vishay 534 Series Pot with 6.34mm shaft, 50K * 2 x 10 k Ohm resistors * Arcol HS50 Al house wirewound high power resistor,1R (1 ohm) 50W - HS50 1R J * National Semiconductor Quad op amp,LM324N 1MHz DIP14 * How does an N Channel logic level MOSFET work - gate voltage, variable resistance, heat dissipation. * How does a LM324N Op Amp work - voltage follower, comparator, rail to rail, head room, feedback loop.



http://www.youtube.com/watch?v=hgrvJ2b2xfg&hl=en

Today we discharge 5.5kV 50uf into film capacitors, electrolytics, resistors, LEDs, surge protectors, 7805 regulator, power transistor, and a LED array from a dead flashlight. Nothing survives this kind of overload. The capacitors go off with quite a bang, they rip apart. The red LEDs disintegrate so quickly that there is nothing to show in slow motion. A small ferrite inductor had the coil blown clean off it with no harm to the core.



http://www.youtube.com/watch?v=8w3FZ1PTdV8&hl=en

In this video I do a basic demonstration of the Hantek DSO-1200 oscilloscope as well as the Fluke 43b oscilloscope function. I demonstate some of the functionality and trouble shooting around my solar powered Kindle DX project. I talk a about supercapacitors and show a nornal capacitor working in conjuction with a voltage regulator. Details: www.kmeasure.co.za Digital Oscilloscope Specifications: . Dual Channel oscilloscope . 500 MSPS sampling rate . 200 MHz bandwidth scope . 8 bit resolution . Isolated ground Digital Multimeter Specifications: . Multimeter Testing modes: Voltage, Current, Resistance, Capacitance, Diode and Continuity . Max input voltage: 800 VDC & 600 VAC . Max input current: 10 A (AC&DC) . Max input impedance: 10 M? . Isolated ground General Technical Specifications of Scopemeter: . USB2.0 PC-Interface (Optional RS232 & LAN) . Battery or AC powered (6 hours battery life) . Large 320x240 backlit display (14.5cm / 5.7inch) Scopemeter Software Features: . Very intuitive UI (user interface). . 23 oscilloscope measurements including: Min/Max, Overshoot/Undershoot, Mean, RMS, +/- duty cycle and rise/fall time. . Horisontal and Vertical Cursors. . FFT analysis (Spectrum Analyser). . XY (circular) plotting of data. . Mathematical functions on oscilloscope waveforms, eg Ch3 = Ch1+Ch2. . 1000 Waveforms can be stored and retrieved for comparison. . Pass / Fail Testing. The Scopemeter Package Includes: DSO1200 Oscilloscope & Multimeter, two 200MHz Oscilloscope Test ...



http://www.youtube.com/watch?v=yu-mnOg3fYY&hl=en

Homemade: A simple tester for Electronic Air Pressure Valves. Easy to make with a few components like: 1 LM317T (to get +10V) 1 Potmeter 10K (to regulate 0-10V to the input of the airvalve) 5 Resistors 3 Leds All the written on the front is just a remembrance of how to adjust this particular valve, and what the alarm codes are. For people that want to make this: Setup a LM317T circuit with an output of 10V. Connect the wiper of the potmeter with pin 2 (Left of notch) of the valve. The remaining 2 contact of the potmeter; 1 to mass and 1 to 10V (output 317T) Other pins of valve socket: Pin 1 +24Vdc-----( Right of notch) Pin 3 Mass--------(Left under notch) Pin 4 Analog output (Right under notch) connect a led with resistor Pin 5 Digital output (Center) connect a led with resistor



http://www.youtube.com/watch?v=pQycLr7hqSw&hl=en

Specification: Voltage : 4.8 - 6V Current Draw : 10mA (4.8V) Gain Adjustment : Single rate, non-remote Operating Temperature : -5C - 60C Dimension : 26 x 27 x 11mm Weight : ~7g Cross Weight : 25g



http://www.youtube.com/watch?v=MIMKSHgqk5Q&hl=en

This video shows the effect of voltage change on efficient electronic ballast fluorescent lighting. Most users of T5 and T8 tubes know that changing their old magnetic ballast fluorescent lighting for electronic ballast lighting saves money on power and replacement costs. However, there is a misconception that these types of efficient lighting cannot benefit from power optimisation. This video shows that this view is incorrect.



http://www.youtube.com/watch?v=j24WW2wDAk4&hl=en

electronic fireflys in a glas - atmel attiny45 microcontroller - 12 green leds - solar cell + stepup voltage regulator based on the code/circuit posted here: www.mikrocontroller.net



http://www.youtube.com/watch?v=b71YFhEVoDo&hl=en

Here is episode, um, i dunno I lost count now. Anyway, my computer's been acting up, and I think it's the power supply, so I take it apart and see i I can find any problems.



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

I have made an electronic supply... an electronic voltage regulator, adjustable ouput voltage...entering 75 volts (more or less) unloaded, and circuit adjusts to lower voltage to feed amplifiers..... it is simetrical, so, adjusts positive and negative.... tracking error from positive supply to negative is 1 volt of different voltage under load conditions when adjusted to 50 volts (2 percent error of voltage into positve voltage compared to negative voltage under load conditions)... regulation is positive...voltage increases in the place to drop because the darlington gain and the error amplifier.... the schematic can be found in www.diyaudio.com, solid state section, Destroyer x threads, in special the Dx Power Supply.



http://www.youtube.com/watch?v=ocVA90cPUhE&hl=en