Dear All, I am currently trying to design a solar inverter. I am looking at the boost converter stage, At fist I was planning to boost from...

Dear All, I am currently trying to design a solar inverter. I am looking at the boost converter stage, At fist I was planning to boost from 48V to 400V using simple boost converter, but after calculation, the theoretical duty cycle for it is more than 80%. People say it is not good for such converters. May I know your opinions on why it is that the duty cycle of Boost Converter should be a...

In terms of battery life, and assuming the same brand of Alkaline battery, is it more efficient to use a 9V battery or 2 AAA cells...

In terms of battery life, and assuming the same brand of Alkaline battery, is it more efficient to use a 9V battery or 2 AAA cells with something like the TL496 converter pictured here. http://www.electroschematics.com/6788/3v-to-9v-dc-converter/ If not, what is the approximate difference either way? The circuit involved is a test audio oscillator. Would be nice if they made mor...

There is a thread in=20 http://www.diyelectriccar.com/forums/showthread.php/evnetics-developing-d= c-dc-converter-72862p5.html=20 which...

There is a thread in=20 http://www.diyelectriccar.com/forums/showthread.php/evnetics-developing-d= c-dc-converter-72862p5.html=20 which suggests a half-bridge DC-DC converter with the following = topology: http://www.diodes.com/zetex/?ztx=3D3.0/application@app~49!top~5!curr~13 Originally I thought it was only useful for low power applications like=20 phone chargers, and I think the capaci...

Is it possible to build a 130-150 Watt, 12V input (for example, car cigarette lighter) to 350V output transformerless boost converter. The...

Is it possible to build a 130-150 Watt, 12V input (for example, car cigarette lighter) to 350V output transformerless boost converter. The efficiency should be at least 85%. Assume a resistor load only. If it is not possible, Would there be any other possible tranformerless solutions?

I guess this is pretty obvious, but when the fet turns on, it's a forward converter charging C1, and when it turns off it's a flyback charging...

I guess this is pretty obvious, but when the fet turns on, it's a forward converter charging C1, and when it turns off it's a flyback charging C2. https://www.dropbox.com/s/4vsi3a5r3ky0wv0/FudFly_Conv.jpg?raw=1 -- John Larkin Highland Technology, Inc Science teaches us to doubt. Claude Bernard

Could some electronics guru...heh, no, I'm not that guy. But could some electronics guru explain how this circuit is supposed to stabilize...

Could some electronics guru...heh, no, I'm not that guy. But could some electronics guru explain how this circuit is supposed to stabilize the Vt dependence of a differential pair V-> I exponential converter circuit? http://www.openmusiclabs.com/files/lm13700_expo2.jpg

I need to design nonisolated dc-dc bidirectional converter for dc nano gride system. i am not sure how to draw in ltspice or in Matlab. please...

I need to design nonisolated dc-dc bidirectional converter for dc nano gride system. i am not sure how to draw in ltspice or in Matlab. please help me out. --

I want to make a DC-DC converter for 48 VDC to about 300 VDC at a = continuous=20 power of about 800W to drive a 1 to 2 HP three phase induction...

I want to make a DC-DC converter for 48 VDC to about 300 VDC at a = continuous=20 power of about 800W to drive a 1 to 2 HP three phase induction motor. I = have=20 some E55 cores and coilformers which should do the job, and also some=20 E47/20/15 which might work OK. The E55 is an Epcos type N27 and the E47 = is=20 probably the same. http://www.mouser.com/ds/2/136/e_47_20_16-75097.pdf h...

For a hobby project, I've found the perfect part for converting battery power to a very low current (2 ma at most) 28V power supply. And that...

For a hobby project, I've found the perfect part for converting battery power to a very low current (2 ma at most) 28V power supply. And that is the Linear Technologies LT8410-1 "Ultralow Power Boost Converter". The problem is that the only package available is a tiny surface mount chip that's 2 x 2 millimeters, which effectively makes it impossible to deal with using a soldering iron....

Hi, I have constructed a DC-DC step-down converter using the MC34063. The circuit I use is very similar to the one shown...

Hi, I have constructed a DC-DC step-down converter using the MC34063. The circuit I use is very similar to the one shown here: http://www.eleccircuit.com/wp-content/uploads/2008/01/ipod-mp3-player-charger-by-mc34063.jpg My circuit does not have the Zener, output side LED and input side protection diodes (TVS1 and D2 in the circuit). The rest of the circuit is quite similar. The...

I'm struggling with issues prototyping PCBs having ICs with a thermal pad. I assembled a new 100-volt buck converter powering a 12V fan, see...

I'm struggling with issues prototyping PCBs having ICs with a thermal pad. I assembled a new 100-volt buck converter powering a 12V fan, see schematic: https://www.dropbox.com/s/ypvtp2z74nudps7/RIS-796_3_Fan-supply_sch.JPG?dl=0 The circuit uses the elegant NSC LM5163, a 100V 0.5A 1MHz converter in an SO-8 PowerPad package. On the pcb layout, I had extended the thermal pad beyond ...

Hello. I have built a phase shifted converter based in the UCC28951 from TI, but I have problems with stability. The load has built-in...

Hello. I have built a phase shifted converter based in the UCC28951 from TI, but I have problems with stability. The load has built-in capacitors and the converter oscillates wildly. I have changed the Type-II compensator to a Type-III one, but oscillations do not stop. Calculation of the Type-III compensator is based in application note SLVA662 from TI. The input voltage is 48 V, ou...

I need to make a 24V to 500-1000V, 20W adjustable power supply for a pulser. It needs to be a floating or negative converter. My specs...

I need to make a 24V to 500-1000V, 20W adjustable power supply for a pulser. It needs to be a floating or negative converter. My specs are: Input: 24-28V Output voltage: 500-1000V adjustable via control signal Output current: 10mA @ 500V (5W), 20mA @ 1000V (20W) I've been reading through threads on different HV designs. So far the only one I've come across that is isolated is Figure

Looking for something that solders into a PCB like the ubiquitous cheap DC/DC modules, but AC to DC with galvanic insulation. Couldn't find any...

Looking for something that solders into a PCB like the ubiquitous cheap DC/DC modules, but AC to DC with galvanic insulation. Couldn't find any but maybe didn't look right.

Hi, I have a client who is looking to incorporate a UV led that needs 6.5 V for operation. There is a existing 5V USB power but I wanted to know...

Hi, I have a client who is looking to incorporate a UV led that needs 6.5 V for operation. There is a existing 5V USB power but I wanted to know if anyone had suggestions on how to convert to 6.5 V or some other voltage to drive a UV led. Regards, Scot

Advice on good ("respectable") candidates for the above? Not keen on a guitar-wannabe "instrument"... (Also, not keen on anything that will...

Advice on good ("respectable") candidates for the above? Not keen on a guitar-wannabe "instrument"... (Also, not keen on anything that will not be able to completely restore axe to original condition when no longer needed/wanted)

Anyone has a DC-DC (12v -> about 20v at 4 to 8 A) converter schematic that proved reliable?

Anyone has a DC-DC (12v -> about 20v at 4 to 8 A) converter schematic that proved reliable?

I tried to reproduce fig.22, p.17 of the datasheet but the output voltage is always about +13 V The VCO alone (like fig.12) works up to about...

I tried to reproduce fig.22, p.17 of the datasheet but the output voltage is always about +13 V The VCO alone (like fig.12) works up to about 1 MHz provided the input voltage is in the [-12:0] range. Has anybody a working schematics? Regards, -- Jean-Pierre Coulon

Hi I am looking for the original paper from 1954 that George Royer did on his Royer converter circuit: "Transistors as on-off switches in...

Hi I am looking for the original paper from 1954 that George Royer did on his Royer converter circuit: "Transistors as on-off switches in saturable-core circuits" in Electrical Manufactoring Anyone know where I can get this? Regards Klaus

Hi, Every converter with synchronous rectification should be capable of bidirectional operation. But there seem not to be any practical...

Hi, Every converter with synchronous rectification should be capable of bidirectional operation. But there seem not to be any practical realisations of bidirectional LLC, except for some vague conference papers. And even then it is not a pure LLC, but a CLLC or split-rail LLC. Why? Best regards, Piotr