LM317T Voltage Regulator with Pass Transistor

Fixed or adjustable 3 terminal linear voltage regulators design cinsiderations.



http://www.youtube.com/watch?v=Wu8AoIDg0Js&hl=en

How to build your own linear adjustable power supply based on LM317. In this tutorial I'll explain how linear power supply works, what parts it consists and ...



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

with Mark Thoren, mixed-signal application engineering manager video.linear.com Demonstration of an amplifier-based circuit design for a relatively inexpensive precision voltage source.



http://www.youtube.com/watch?v=9KtJr7Jv16I&hl=en

with Henry Zhang, Applications Engineering Manager - Power Products video.linear.com Current sharing performance is critical for PolyPhase® DC/DC converter to balance the thermal stress and properly size the power components. The PolyPhase converter can be controlled by either voltage or current mode control scheme. With voltage mode control, the active current sharing is achieved with a complicated external current sharing loop, which is usually slower than the inner voltage feedback loop. With current mode control, such as implemented in the LTC3731 or LTC3850, the current sharing can be implemented very easily with its fast current loop.



http://www.youtube.com/watch?v=dn2xSvsXi90&hl=en

Linear Power Supplies series-pass regulation



http://www.youtube.com/watch?v=VDs5SZIFLKk&hl=en

Linear Power Supplies



http://www.youtube.com/watch?v=mW7b359BUig&hl=en

Linear Power Supplies



http://www.youtube.com/watch?v=1q4C88ADboA&hl=en

with Jim Williams video.linear.com Linear regulators are commonly employed to post-regulate switching regulator outputs. Benefits include improved stability, accuracy, transient response and lowered output impedance. Ideally, these performance gains would be accompanied by markedly reduced switching regulator generated ripple and spikes. In practice, all linear regulators encounter some difficulty with ripple and spikes, particularly as frequency rises. This video, excerpted from LTC Application Note 101, explains the causes of linear regulators' dynamic limitations and presents board level techniques for measuring and improving ripple and spike rejection.



http://www.youtube.com/watch?v=WxhjLIu-vPg&hl=en

with Robert Dobkin, Vice President, Engineering and Chief Technical Officer video.linear.com The LT3080 is a new architecture for linear regulators. It provides better regulation, a simple output adjustment with a single resistor where the output can be adjusted down to zero. Also, this architecture allows easy paralleling of regulators for no heatsink operation in an all surfacemount applications. The LT3080 circuit operation and applications for paralleling, spreading the heat, general purpose power supplies and current sources will be shown.



http://www.youtube.com/watch?v=xbDHnalm-MQ&hl=en

How to build your own linear adjustable power supply based on LM317. In this tutorial I'll explain how linear power supply works, what parts it consists and a lot of small details, like how to calculate smoothing capacitor value, or how to choose a transformer. Plus you'll see how to build an actual power supply. ADDITIONAL INFO & PHOTOS: jumperone.com And you can find some more cool stuff on www.jumperone.com Twitter: twitter.com Videos from other people on similar topics: www.youtube.com - Electronics Thermal Heatsink Design Tutorial from Dave Jones www.youtube.com - Diode Tutorial & How to build an AC to DC power supply from Afrotechmods www.youtube.com - Electrical Transformer Tutorial from Afrotechmods Keywords: LM317 adjustable power supply tutorial linear +5v +12v 5v 12v +3.3v 3.3v lab bench laboratory how to how-to hho diy electronic hack make tinker phil levchenko jumperone electronics instructions howto heat dissipation smoothing capacitor bridge rectifier diode voltage drop



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An overview of the Gryphon Extreme regulator



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Measure the Power Supply Ripple Rejection (PSRR) of a linear regulator Scot Lester SVVC014



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Modern IC voltage regulators are available in a wide range of output voltages and currents, they have a built-in protection against overcurrent and overheating. Voltage stabilizers are divided into two classes - linear (continuous), and pulse. Today we tell about the linear voltage regulators.



http://www.youtube.com/watch?v=h_VCkBRRr1U&hl=en

Just how different are linear, LDO and switching buck voltage regulators? I'm glad you asked! You might be surprised... It's tutorial time. NOTE: There are many different methods of SMPS control, this is just one of the simple ones, go investigate! The EEVblog Forum: www.eevblog.com The EEVblog Website: www.eevblog.com



http://www.youtube.com/watch?v=cM7t1Mpu7s4&hl=en

There is an alternative solution when deciding between a step-down switching regulator and a linear regulator. Switching regulators dissipate less heat than linear regulators especially when the input voltage is much higher than the output voltage or the output load current is relative high. On the other hand, linear regulators are very simple and dont require inductors. What if there was a switching regulator circuit could be simplified and fitted inside a surface mount package and the complete solution became as simple as a regulators circuit?



http://www.youtube.com/watch?v=mKcHFv9u2Fs&hl=en

with Eddie Beville, Design Manager - DC/DC uModule Regulators video.linear.com There is an alternative solution when deciding between a step-down switching regulator and a linear regulator. Switching regulators dissipate less heat than linear regulators especially when the input voltage is much higher than the output voltage or the output load current is relative high. On the other hand, linear regulators are very simple and dont require inductors. What if there was a switching regulator circuit could be simplified and fitted inside a surface mount package and the complete solution became as simple as a regulators circuit? No inductors, no MOSFETs, no difficult calculations for compensation circuitry. On paper, it is a simple square box with a few resistors and capacitors. On a PCB, it is also a simple square box with a few resistors and capacitors.



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

A bit of a follow-on from the linear regular episode. Dave dances with a simple linear closed loop circuit he built, and bodges it up in LTspice to get a remarkably consistent result. Not really a tutorial, just a few random tidbits.



http://www.youtube.com/watch?v=b7UQVZaqxg0&hl=en

There is an alternative solution when deciding between a step-down switching regulator and a linear regulator. Switching regulators dissipate less heat than linear regulators especially when the input voltage is much higher than the output voltage or the output load current is relative high. On the other hand, linear regulators are very simple and dont require inductors. What if there was a switching regulator circuit could be simplified and fitted inside a surface mount package and the complete solution became as simple as a regulators circuit?



http://www.youtube.com/watch?v=MxjAAIcI45M&hl=en