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Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.

We found 685 threads matching "converter"

You are looking at page 1 of 18.

The most relevant threads are listed first

Legal to sell DC-DC Converter *Kits*?

Paul - 2009-03-05 11:41:00
Hi, Is it legal to sell a kit that includes all of the parts, instructions, and diagrams so someone could build there own DC-DC Converter kit? I believe it requires certifications (e.g., UL) to make & sell DC-DC Converters, so someone suggested selling kits until I make enough $ to get the DC...Legal to sell DC-DC Converter *Kits*?

High voltage buck and forward converter .... - or one stage direct

Klaus Kragelund - 2008-11-20 09:58:00
Hi I need to design a wide input range converter (16VDC to 600VDC) with two 5V outputs with a total power of 25W. The supply needs to be double isolated and my first thought was to use a HV buck converter to step the voltage to 16V and then a forward converter (half-bridge) to step down to ...High voltage buck and forward converter .... - or one stage direct

Re: inverter generators

m II - 2010-06-24 23:36:00
Bob wrote: > Anyone know why someone chose to call this sort of device an > "inverter" ? This seems counter-intuitive and has always puzzled me. I used to think it's because they can put half the input DC below the zero line, thus *inverting* it. That proved not to be the case. I ...Re: inverter generators

Logarithmic converter

jozamm - 2010-02-24 06:20:00
Hi all, I am looking for a logarithmic converter with a voltage input and voltage output. Any suggestion would be very helpful. Thanks very much, Regards, Joseph ...Logarithmic converter

DC to Dc converter

RealInfo - 2009-01-06 04:03:00
Hi all I am looking for a good DC to DC converter circuit that is good for tube absed guitar effects pedals . This circuit will use the low DC supply 12 vdc usually and will lift it to a high enugh voltage to drive an 12ax7 or ecc83 tube for example . Thanks EC ...DC to Dc converter

MP4 Converter for Mac

soft27 - 2009-11-03 04:20:00
Emicsoft [url=http://www.emicsoft.com/mp4-converter-for-mac.html]MP4 Converter for Mac[/url] can convert from MP4 to other video/audio formats on mac os x. With this Mac MP4 Converter, you are able to convert MP4 to AVI, MP4 to FLV, MP4 to MPEG and also to more popular formats such as MOD, TOD, ...MP4 Converter for Mac

DC converter

john - 2010-02-18 15:16:00
Hi, I am using the following function generator to produce a 60Hz , 16Volts peak to peak output voltage. http://www.globaltestsupply.com/datasheets/4011a.pdf I am using following DC to DC converter and Bridge Rectifier http://cds.linear.com/docs/Datasheet/3970f.pdf http://www.diodes....DC converter

AC/DC converter having power saving under 100mW

webber - 2008-08-31 21:56:00
Hi all, I would like to built an AC/DC converter with universal input (90~264Vac) and one 12V/2A output. It need to having power saving under 100mW when the output loading is 40mW. Can anypne suggest me PWM ICs which can acchieve this target... Thansk! Webber. ...AC/DC converter having power saving under 100mW

How to set boost converter output voltage ?

Daku - 2010-07-20 10:26:00
I have designed with SPICE a simple boost converter with input voltage output voltage ratio of 1:3 - 10.0V goes in and 30.0V comes out. I did this mostly with simple calculations and changing capacitor/ inductor values. Is there a better and more predictable way to do this ? Thanks in advance fo...How to set boost converter output voltage ?

Buck converter failures

D Yuniskis - 2010-04-12 18:39:00
Hi, I've got an external SATA-USB cradle that gave up the ghost. 12VDC supply (used by the spindle motor) which is then dropped down to 5V (for the logic) via a buck converter (I am guessing this based on visually examining the foil traces -- I'll have to drag out the stereoscope to read ...Buck converter failures

Diodes for boost converter SPICE parameters

Daku - 2010-07-01 02:16:00
Could some electronics guru provide names and URLs for SPICE parameters for diodes for DC-DC boost converters ? I designed a simple DC-DC boost converter with 3x output, using Schottky diodes MBR340. I am interested in other alternatives. Thanks in advance. ...Diodes for boost converter SPICE parameters

12V-12V converter!

Myauk - 2010-02-03 01:23:00
Dear All, Is there any such thing as 12V-12V converter? I have never heard of it before. Regards ...12V-12V converter!

DC/DC converter foldback proteccion.

jboix - 2008-10-15 12:39:00
Hello everybody, I'm a junior engineer. I need design a 600V DC supply. I have tree lineal converter of 1000V. And I need protect its because the maximum current is 1.5mA. I thought protect the power supply with a foldback circuit but is very difficult for me because I have very high voltag...DC/DC converter foldback proteccion.

Re: DTV Pal running slow

John E. - 2009-05-12 11:13:00
> Because the product called the DTV Pal works with ATSC. It's just > a name. (It originally was called the TR-50 (not TR-40, the -40 was > a CECB)). I think ya got it backward: The DTVPal is equivalent to TR-40; just a ATSC converter. the DTVPal DVR -- a.k.a. TR-50 -- is a ATSC c...Re: DTV Pal running slow

Buck converter, current sense in the return path

Klaus Kragelund - 2009-01-19 04:12:00
Hi A typical buck converter with current mode control has a PWM controller referenced to output ground, a current sense transformer to bring down the current sense signal and a pulse transformer to level shift the gate signal. Sometimes I have seen the approach to use current sensing in th...Buck converter, current sense in the return path

DC to DC converter

john - 2010-02-28 17:59:00
Hi, The idea is to provide a 3.7 volts and 100mA to a circuit if the power in ON and trickle charge the Lion battery and if the power is not ON than 3.7 volts and 100mA will be provided by a Lion battery. And when the power is ON than the battery will be cutoff and will only get charged. I...DC to DC converter

F to V converter problem

2008-11-11 17:55:00
The frequency to voltage converter makes use of a LM324, the circuit schematic can be found in (Page-4) http://www.fairchildsemi.com/an/AN/AN-140.pdf. The LM324 is fed off a single supply and the decoupling is based on the design found in (Figure 3, Page-2) http://instruct1.cit.cornell.edu/C...F to V converter problem

S-Video hack for DTV converter box?

DaveC - 2009-02-19 16:10:00
I like the programmable feature of the DTV Pal (Dish Network) converter box. The one drawback is that it doesn't output S-Video. I haven't received it yet, so I can't crack it open and give component specifics but are the video chips that are common in these boxes capable of both composite...S-Video hack for DTV converter box?

Need OFF THE SHELF DC-DC converter 100-125 watts 12 in 24V out

2009-09-22 17:52:00
Anybody know of a source for a 100 watt 24V output boost converter ? Source is a lead acid battery. Use is to power a class D amp. 24 is is great, higher power is better. Should be small form factor and a bare board is fine. And in these days of 22 week lead times, off the rack and ready to go ...Need OFF THE SHELF DC-DC converter 100-125 watts 12 in 24V out

any suggestion to improve RS232 Signal Quality?

Myauk - 2009-10-08 04:14:00
Dear All, Could anybody suggest me what are the possible ways to improve the signal quality of 5 ft long RS232 Serial line at Baud Rate 115200? I posted a question asking on flash programming failures via RS232 Serial Link, a few days ago. Here are more details on the issue. The connec...any suggestion to improve RS232 Signal Quality?

Re: SOT-SC sockets

Robert Baer - 2010-01-20 04:28:00
Fred Bartoli wrote: > Anyone knowing where to find test sockets for SOT23 (3 / 6 pins) > SC70,... in ones quantities? > > > I had designed a "converter" from SOT-363 and similar devices (the list of parts that will fit and work is rather long), the "converter" is an 8-pin DIP P...Re: SOT-SC sockets

Wide Range DC to DC Converter

Kooner - 2010-08-19 18:50:00
Hi There, I have an application for a 500W DC to DC converter. The input is 15VDC--> 60VDC and the output is 10VDC. I ran through some numbers and using a full bridge with ZVS I don't think I can get 90% eff at full load over the input range. Also the ripple and 60VDC input may be a problem ...Wide Range DC to DC Converter

ltspice simulation of royer converter

Michael - 2008-10-18 10:45:00
Hi there - I am looking at using a royer converter in an upcoming design. Jim Williams' work has been incredibly helpful. Anyways, I was hoping to simulate the thing to understand it better. A friend and I tried to get a simulation working yesterday, but I don't think we got it just right. Speci...ltspice simulation of royer converter

Re: differential notch filter with high out of band impedance

MooseFET - 2010-02-23 10:08:00
On Feb 20, 9:40=A0am, Daniel wrote: > Hello, > > A Z=3D1k source has an output signal with two frequencies, which I need > to detect independently with two amplifiers. > Signal frequencies are in the low kHz range. > One signal is 100 mV (f1), the other in the nV (f2) range. The 100 m...Re: differential notch filter with high out of band impedance

UC3825 help with Pspice

Waldes - 2009-03-18 07:19:00
Hi all! I need simulation file for this IC. If someone has it, please share with me. I found here some files for UC3843, UC3842, but they are current mode, and I want something with voltage mode for flyback converter, which has voltage regulated from 30V to 300V. So I will be gratefull for mo...UC3825  help with Pspice

Re: OT Sail downwind faster than the wind!

John Larkin - 2010-08-08 14:03:00
On Sun, 8 Aug 2010 10:29:47 -0700 (PDT), Rick Cavallaro wrote: > On Aug 8, 10:24 am, John Larkin wrote: > > > > You are a True Christian... > > Actually, I'm a somewhat devout atheist. Can you be a minister of atheism? I suppose you are. > > > Now go away. > > The cockroac...Re: OT Sail downwind faster than the wind!

Re: 74LVC4245A alternative with individual direction?

Philipp Klaus Krause - 2010-06-30 06:42:00
Am 30.06.2010 12:35, schrieb Uwe Hercksen: > > > Philipp Klaus Krause schrieb: > > > Sorry, for not chosing a clearer wording of my question. I'm looking for > > a level converter that has one direction / OE line per data input > > /output (instead of common lines for all 8 as in th...Re: 74LVC4245A alternative with individual direction?

Re: Non-linear functions ...

whit3rd - 2009-11-28 16:50:00
On Nov 24, 2:20=A0pm, Richard Rasker wrote: > Jon Kirwan wrote: > > > Does anyone know of designs which provide a better fit for this type of > > > logarithmic function, and preferably a better temperature stability? > > Third was to consider recommending a micro, which is a rather c...Re: Non-linear functions ...

Re: DTV Pal running slow

Alan - 2009-05-13 16:04:00
In article incognito@xbjcd.com writes: > > Because the product called the DTV Pal works with ATSC. It's just > > a name. (It originally was called the TR-50 (not TR-40, the -40 was > > a CECB)). > > I think ya got it backward: > > The DTVPal is equivalent to TR-40; just a ATSC con...Re: DTV Pal running slow

ZVS converter - snubber helpful at turn-off?

Yzordderrex - 2009-10-15 10:34:00
I am looking at doing a half-bridge LLC resonant converter design. Fairchild appnote AN-4151 Turn-on is not a problem as it is into zero voltage as the lagging current commutates the current before the Fet turns on. I am wondering if placing a small capacitor (100pf-1000pf) across the Drain...ZVS converter - snubber helpful at turn-off?

170VDC to 12V isolated supply

Jamie Morken - 2008-04-01 20:15:00
Hi, I would like to make a 170VDC to 12V isolated supply with 12watts output (12V 1Amp), with 100kHz PWM. Would a forward converter or a flyback converter (or another) be best to use for this type of supply? Also for a 20VDC to 60VDC input to 12V 1Amp isolated output with 100kHz PWM wh...170VDC to 12V isolated supply

Re: Got a 12v gel Cell, need 3.3,5,12,32 volts

whit3rd - 2009-12-02 16:44:00
On Dec 2, 9:51=A0am, _ wrote: > Specs for a tivo series one supply. =A0The 12v only feeds the/the pair of= HD, > which I will replace with a 5v storage so that requirement may be actuall= y > a fair bit less. > > V1 ------- 3.3vdc @ 4 Amps > V2 ------- 5vdc @ 2 Amps > V3 -------...Re: Got a 12v gel Cell, need 3.3,5,12,32 volts

Need MA to voltage converter help

Jim - 2008-10-09 14:42:00
I have a sunlight sensor made up of 2 tiny amorphous solar cells in parallel, that I would like to use with a 0-5 volt data logger. These cells provide the spectral response I want. The cells together generate a maximum of 2.25ma of current in full sunlight that I need to convert to voltage. ...Need MA to voltage converter help

Electrolytic capacitor that's rated for 7A of ripple current at 100KHz?

BobW - 2009-09-25 00:01:00
I'm doing a 12V-> 48V converter at 330W. Even with a four phase converter, the ripple current (according to LTspice) is about 7A rms. I need about 1,000uF (63V will be okay) and the max ambient will be 60C. The caps I've looked at from Panasonic and Nichicon can handle about 2A max of rip...Electrolytic capacitor that's rated for 7A of ripple current at 100KHz?

Sources of heat in a buck converter?

Michael - 2008-04-17 15:51:00
Hi there - I have a DC/DC converter based on the Linear LT3845 DC/DC controller (http://www.linear.com/pc/downloadDocument.do? navId=H0,C1,C1003,C1042,C1032,C1082,P32352,D18038). It is stepping about 40V down to 5V at about 8A. The board seems to be heating up quite a good deal (in one case, it ...Sources of heat in a buck converter?

Re: EMC question

Tim Williams - 2009-11-30 02:02:00
So it's no matter that the whole driver circuit is flying at some crazy voltage (and dV/dt, and potentially dI/dt across it)? Or is that something where you're just fucked and the only solution is to shield the lot of it? Now, you mention a common mode choke... but would that have to be size...Re: EMC question

Re: Digitizing a signal with small and much larger voltages

Nicholas Kinar - 2009-07-22 15:48:00
There's an ADC converter board offered by this company: http://www.kenda.co.uk/pr/ke1162.htm Here's what the system can do: "The new PS2400 analogue-to-digital converter (ADC) board from Earth Data Ltd, part of the Southampton-based Kenda Group, provides three independent channels of 24-b...Re: Digitizing a signal with small and much larger voltages

Boost energy & power flow (i/p to o/p)

reggie - 2008-06-02 14:44:00
Hi all, I am trying to understand the flow of energy an d thus power through a boost converter. I understand how the circuit works, but am a little confused on some concepts proposed by A.Presmans book switching power supply design second edition. (For those of you with the book it=92s the ...Boost energy & power flow (i/p to o/p)

Intel (c) hex file to code in MCS-51 BASIC DATA statements converter released under the GPL.

Jan Panteltje - 2010-01-13 09:22:00
Intel (c) hex file to code in MCS-51 BASIC DATA statements converter released under the GPL. This is software for the Linux OS. http://panteltje.com/panteltje/newsflex/download.html#hxl This makes it easier to use inline code in 8051 / 8052 embedded systems that run MCS BASIC. ...Intel (c) hex file to code in MCS-51 BASIC DATA statements converter released under the GPL.

forward converter problems

vkj - 2009-09-25 06:19:00
Hi, I designed a 2-trans. forward converter for a battery charger. It is designed for 8A at 30V. It uses a PIC 16F877A controlling a IR2110 driver and IR840 MOSFETs. The problem is that at moderate currents (> 4A) the ferrite transformer (ETD59) starts emitting a crackling noise. tho it cont...forward converter problems
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