LM317T Voltage Regulator with Pass Transistor

Previous Video HERE: www.youtube.com Rev C Schematic HERE: www.eevblog.com Part 12 in the PSU design series. A thorough look at the Rev C schematic and all the changes. 18650 Lithium Ion battery charger, software controlled switching pre-regulator, replacement of the uCurrent capability, return of the PWM DAC, accommodating the Wiznet Ethernet module, and a whole lot more.



http://www.youtube.com/watch?v=XroH4X78qTY&hl=en

Some tracking pre-regulator simulation fun in LTspice. Part 13 of the PSU design series.



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

PART 2 is HERE: www.youtube.com Dave shows you how to design a simple constant current and constant voltage lab power supply that can be either software (PIC/AVR et.al microcontroller) or traditional pot controlled. Starting with the venerable LM317, and ending up with an LT3080 solution, and the some thought processes that go into it all. Part 1 is the conceptual design of this Open Hardware design.



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

Who else but Dave can turn what was supposed to be a simple 2 minute AVR ISP hack video into a 30 minute episode on designing and measuring the performance of an LM317 voltage regulator circuit, with a bonus shootout between the Fluke 87V and the Gossen Metrahit XTRA multimeters?



http://www.youtube.com/watch?v=ICQXqVy3Hpc&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

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