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Equivalent EMCO high voltage converter - model 8575

arinetoafn — Mon, 18 Mar 2019 11:30:40 GMT

I would like to know if you would have the EMCO high voltage converter, model 8575, according to attached photos. I checked the catalog on the manufacturer's website, but the model quoted probably went offline. If they do not have the converter, would you let me know the equivalent and what the features are?

Attachments:

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LDU1416S1000 EMI Input Filter Component Selection

jgroleau — Thu, 11 Jan 2018 02:29:16 GMT

The LDU1416S1000LDU1416S1000 LED Driver datasheet Identifies an input filter consisting of 2 capacitors in parallel and an inductor in series The datasheet specifies the values for the capacitors and inductor but not the max voltage for the caps or the max current for the inductor The capacitor voltage is easy I am having difficulty determining the max current for the 68uH inductor Any help would be appreciated

RE: LDU1416S1000 EMI Input Filter Component Selection

jgroleau — Thu, 11 Jan 2018 22:41:31 GMT

Thanks for the input I am limiting the output current on the LDU1416S1000LDU1416S1000 to 700MA with a voltage divider on the control pin The load is a single LED I have ordered a 1.4A inductor so that should do the trick

RE: LDU1416S1000 EMI Input Filter Component Selection

genebren — Thu, 11 Jan 2018 20:51:02 GMT

Jim,

The input filtering is most likely used to suppress any back ripple from within the driver. The current could be in the order of 1.5 to 2.0 times the load load current. This device can drive up to 1.0 A, but depending on your loading it could be less. This is just a ballpark figure based on similar devices.

Good luck,

Gene

RE: Power Supply Datasheet

michaelwylie — Mon, 02 Jun 2014 05:24:00 GMT

I'd say it's 0.2 inches or 5.08 mm. Just two pins away.

Power Supply Datasheet

TEMProducts — Mon, 02 Jun 2014 04:45:45 GMT

Hello.

I am working on a design including XP Power LDU48 LED Driver.

More specifically: LDU4860S150

Some necessary information seems to be missing from the datasheet.

What is the spacing between pins 9 & 11?

[View:/resized-image/__size/479x435/__key/communityserver-discussions-components-files/54/contentimage_5F00_31746.jpg:479:435]

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Mon, 17 Mar 2014 13:36:36 GMT

Hi,

I'm not sure if you are the right person to ask but I need help. Firstly know nothing about motors so please bear with me. I have 6 big circular wooden cut outs that I want to rotate independently of one another but I don't know how to pick the right motor for them. The cut outs made of mdf are 1210mm in diameter. They are about 5 kgs in weight and they will be rotating off center. I have tried to calculate the torque and inertia etc, but I'm not sure if my calculations are right nor am I sure if I have understood the physics of it all. Could someone please help me choose the right motor? Honestly at this point I don't care bout how fast or show the motor rotates. I just want it to be able to rotate my piece 360 degrees.

Any help would be greatly appreciated.

http://www.element14.com/community/update-advanced-comment.jspa?id=106503

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RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Sat, 29 Jun 2013 21:48:48 GMT

WHERE CAN I BUY SOME MOSFET TRANSISTORS FOR A TV

POWER SUPPLY FUJI FHM23N50E Bob at 4143055143

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Mon, 03 Jun 2013 14:08:18 GMT

Subi, I'm sorry, but I don't believe the question you are asking in regards to your DC1496B board is related to XP Power. I don't believe we can help you with this question.

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Mon, 03 Jun 2013 13:38:19 GMT

I am waiting for the Reply

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Mon, 03 Jun 2013 12:54:12 GMT

Hello.,

I connect one Li-ion battery in to E2 and E4 pin in DC1496B board.I install QuikEval software and check the output.I am clear this eval kit is used for finding the charging status.I need to know charging status in different levels(0%,25%,50%,75%).Please help me how to finding the charging status.

Best Regards.,

subi.M

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Fri, 31 May 2013 03:15:00 GMT

Hola

Me gustaria que me ayudaran para hacer un proyecto que quiero hacer para mi clase de Programacion.

Quiero controlar una placa Arduino BT por medio de una aplicacion de Android, tengo un programa y una placa Arduino Uno que se accionara con la BT, pero me gustaria que dijeron si necesito algo extra.

De antemano, gracias.

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Thu, 30 May 2013 11:13:12 GMT

will opa2107 sounds good if i provide it with 10v?does it need to bypass or decoupling?

James

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Thu, 30 May 2013 11:09:44 GMT

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Fri, 15 Mar 2013 11:46:58 GMT

i forgot my username and password and can't even get into the system.

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Wed, 23 Jan 2013 13:20:32 GMT

Dear members,

I'm with a small problem in my circuit design.

I have a power system here, which is supplied with 12 Differential Voltage and Current Measure.

My micro-controller is supplied by 5 Differential Voltage and Current Measure.

The power system and the micro-controller DO NOT share the same ground.

My question is: how to make measurements of voltage and current on the power system and feed this information into the micro-controller? If they had the same ground, that would be easy. But with different grounds, I'm not really sure how to do it!

The voltages that I have to measure range from 0 to 12 Differential Voltage and Current Measure. The currents that I have to measure range from 0 to 30 Differential Voltage and Current Measure.

Thank you very much for your attention!!

RE: Reset centralina elettronica durante start motore

Former Member — Sun, 28 Oct 2012 09:41:27 GMT

Anche se un po tardi provo a dare una risposta: l'utilizzo di un dc-dc potrebbe sicuramente aiutare a mantenere l'alimentazione dell'elettronica stabile , per individuare il convertitore piu adatto si potrebbe misurare in effetti la tensione ai capi della centralina durante la fase critica quindi individuato l'eventuale problema si puo identificare il prodotto giusto o eventualmente progettarne uno ad hoc. Sarebbe opportuno anche verificare se e quali disturbi vengono introtti nell'alimentazione , probabilmente attraverso i cavi remoti di avviamento esterno , il fatto che dalla chiave interna si avvia regolarmente e in remoto si resetta induce a pensare che il problema sia riconducibile a disturbi introdotti , ai quali si puo piu semplicemente ovviare con l'utilizzo di un accoppiatore ottico .

Reset centralina elettronica durante start motore

Former Member — Fri, 23 Jul 2010 13:20:53 GMT

Siamo costruttori di mezzi industriali ed agricoli,

tensione di batteria 12V.

Abbiamo motori termici sia elettronici che meccanici.

qundo eseguiamo lo start motore dalla chiave quadro non abbiamo nessun problema,

quando invece facciamo start motore da pulsantiere esterne , l'elettronica si resetta, impedendo lo start.

Quale componente è indicato per ovviare agli sbalzi di tensione negativi (2.5V) che resettano l'elettronica?

Potremmo installare un DC-DC converter sull'alimentazione,

come funzionano questi componenti?

Grazie.

RE: Ask an XPert -- Questions for the Power Supply Experts

Former Member — Fri, 03 Aug 2012 13:20:01 GMT

Hi i m Denise. I need help to find a way to program a graphic LCD (BTHQ128064AVO) by using dspic33f128GP804.

Regards

RE: i2c bus ACK problems

Former Member — Fri, 24 Feb 2012 17:33:48 GMT

The bus actualy does work, I've been using it to control multiplexors, I have had to remove the ACK code since it doesn happen and double up my messages to make sure that they send.

Its half 5 on Friday evening so im out of here

Ima get back onit on monday and maybe pop off the latch to see if we get some i2c going

Thanks

i2c bus ACK problems

Former Member — Thu, 23 Feb 2012 10:18:24 GMT

Hallo all,

I’m designing an i2c bus at the moment with an ADuC842 master and a PCF 8574 i2c expander slave. I have a 74HC573 latch in between the master and slave, which I believe to be standard practice.. The problem that I am facing is that I cannot get the acknowledge signal to show up on the master side of the latch. When an ACK is generated by my PCF the pulldown brings the SDAT line from 5 volts to about 2. It shows up quite obviously on the slave side but not on the master side. I am pretty sure the issue is that the latch is not backwards transparent is blocking the pulldown from propagating through to the master side OR the pulldown is not sufficient and the ACK is being detected as logic 1.

Solutions tried:

Shorting out latch -> didn’t work

Swapping PCF chip -> didn’t work

Any ideas???

It would be the job if someone could shed a bit of light on this for me or if you have experienced it yourself..?

Regards,

Ronan

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RE: i2c bus ACK problems

robotonics — Fri, 24 Feb 2012 17:16:47 GMT

Hi Ronan

I am afraid you will never come across an example of a latch being used in this way. Could you explain more regarding the reasoning behind the use of the latch?

RE: i2c bus ACK problems

Former Member — Fri, 24 Feb 2012 16:43:10 GMT

Hi YT2095,
Thanks for the novel solution but it’s a bit extravagant for my bus. The 9^th bit of my transmission is the ACK signal sent by the slave to the master to indicate a full byte received. To generate the 9^th bit the master lets go of the SDAT line letting the pull up resistor bring it to 5V then the slave grounds the SDAT line in time for the 9^th clock pulse. A zero in place of the 9^th bit = ACK a one = NACK.

The problem I was experiencing was that when the slave grounds the SDAT line the latch just pumped it back up again with no possibility of the ACK signal reaching the micro controller.

IF anyone knows of a latch being used in an i2c bus please let me know cause I want to get to be bottom of this.

Thanks,

Ronan

RE: i2c bus ACK problems

Former Member — Fri, 24 Feb 2012 16:33:16 GMT

So we both agree that the latch is to blame. I’ve been told to keep testing it and basically to make it work as is so I’m not too happy.
I am but a pawn in this institution.

So what I need are smaller pull-ups and less latch...

Thanks for your reply

RE: i2c bus ACK problems

Former Member — Thu, 23 Feb 2012 16:10:00 GMT

Why do you have the latch? This is certainly not normal for I2C. I2C devices MUST be open-drain so that both master & slaves can pull the SCL and SDA lines down. Remove the latch completely. You can see from your waveforms that the slave is trying to ACK but can't pull down the output of the latch. Anyway how do you expect the master to see the ACK when you have a latch in the way?