Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi Davis256
Welcome to the wonderful world of the ST7540! That chip insists on being the SPI master (a monumentally stupid piece of system design in my humble opinion, making the peripheral the master!) and unless the length of the SPI word is able to be changed (as some devices can be), the...
Hi, here are a few suggestions.
**broken link removed**
http://www.analog.com/static/imported-files/application_notes/AN_934.pdf
http://users.ece.gatech.edu/mleach/ece4435/sp09/dp02a.pdf
Regards,
Bob.
Hi Guys,
Have not been on this forum for a while. Yes, we did get it to work eventually but never realy got it to work as well as the datasheet promised. We got it working most of the time over about 1km but had no success at all working on cables longer than 2km and between 1 and 2km was then...
labview can protocol
You will need a CAN to USB or CAN to RS232 interface dongle as a minimum, you can get these from your local professional electronics supplier or search online, they cost about twice the cost of a USB to RS232 dongle. From then on you can treat the CAN datastream as a COM...
Re: help with my circuit
All good stuff millwood, I did not spot your point 3 when I looked briefly at the circuit earlier. I assume he is intending to use a DC motor fed with direct rectified AC but as you have pointed out that is not what he has drawn.
Also as millwood gently pointed out...
digital speedometer for car
Connect the sensor to your circuit with a twisted pair of wires and ground your electronics on the clean side of the common mode choke so that the hall sensor and the electronics see a common clean ground point. As suggested in the previous post a small capacitor...
Re: help with my circuit
The 22 ohm resistor limits the charge-up current of the FET input capacitance to provoide a softer motor start, the diode provides a rapid discharge path on turn-off so that the motor turns off as fast as possible.
Note, that beyond the opto-isolator the circuit is...
parallel port using turbo c in winxp
Hi,
Is this url any help? If not I cannot make any other suggestions, sorry.
http://www.hytherion.com/beattidp/comput/pport.htm
Regards
Bob
parallel port c compiler
Saad,
Please see the this thread, there is link in one of my replies that will help you. You need to copy the free dll (inpout32.dll) when your have downloaded it into your system directory and then call it using turbo c. You will be able to access the parallel port...
Hi Bjarne,
Fairchild Semi have some useful design solutions for lower power off-line Switching PSUs that are easy to use and have free software that you can download that will handle the whole design process (using their devices) for you, the two designs that I have tried using this software...
variable current smps
Hi,
Looks like you have found an excellent solution to your problem, that device is a fully integrated buck regulator device complete with the power transistors built in, I had not seen it before, it may be useful to me someday too. You will need to recalculate the values...
variable output buck smps
Hi,
Do you already have a bulk 48V power supply that you intend to use, or do you want to design that part as well? A flyback design will cope easily with the 60 to 70W that you require for your regulator input, these are isolated and a number of reference designs...
variable output smps
Hi,
The PSU that you reference is a standard PSU with a switching buck regulator on the output, it will be a bit more efficient than a linear regulated PSU with the same power output but will not be very much lighter physically as it still uses a 50Hz transformer to produce...
smps full bridge
Hi
Take a look at darla1 post, this contains a schematic which will give you a head start with a full bridge design, there is an error in the phasing of the parallel fed driver transformers which you will need to correct, the windings on each transformer should be opposite...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
