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Converter
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...
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 ...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 ...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
...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
...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, ...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....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.
...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...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 ...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.
...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
...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...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...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...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...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...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...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
...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...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...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 ...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...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...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...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: 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: 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: 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...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...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...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 -------...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.
...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...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 ...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: 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...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 ...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.
...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...