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42 Threads found on edaboard.com: Converter Hi Speed
Hi there, i was wondering if anyone could help me with this. I recently made a PCB for a FT2232H USB-serial converter in order to get an easy way of exchanging data between a PC and a microcontroller system. I followed most guidelines from FTDI to use their serial converter but my PCB has the following issue: -USB device connects and disconnects
Hi, Does any one knows an ic/circuit that can convert a dc level(10-30V dc ) to TTL level?
hi, I want to design a speed controller (v/f) for Air conditioner Compressor motor. Is it possible to use the technique of AC/AC converter Matrix Cyclo-converter for this purpose. Can i operate a compressor at 25Hz and half of the line voltage?
hi, I want to implement a ac/ac speed controller for 1/2 HP induction motor. I have issues in driving the gates of THYRISTORS. There are 8 THYRISTORS as shown in the converter file. Is it a good idea to make 8 isolated 5v dc supplies using 8 small transformer , rectifier bridges and linear regulators such as lm7805 and connect them as shown
Hi guys, Our team is using the SPI interface on the raspberry pi to communicate with the GP22 chip(Time to digital converter) Data sheet of GP22 GP22chip is used to measure the time differe
Hi All, I need to add ethernet connectivity to a new board I'm designing. In the past I've used Lantronix XPORTs, which is a serial-to-ethernet converter, and they work fine. But I need much faster speed for this board (>3Mbit/sec) and the XPORT won't handle that. The board will have an FPGA which will need to talk to the outside world.
hi, first here is an explanation of what i'm trying to do: i need to measure the speed of a dc motor, to do so i used a photo diode, laser and frequency to voltage converter, on the disc of the motor i placed a duck tape to block the contact of the light from the photo diode, in the output of the photo diode i measured a pulses with a frequen
The best way will be to provide a clean DC to the motor input. The closest you can practically get, in my opinion, is to use the PWM to control a Buck converter. The DC motor can be used as the capacitor of the buck circuit.
Hello everyone I was simulating a basic two switch forward converter and can't figure out why the output inductor current has this shape (in images.elektr
Sounds like you would want to use a boost, or buck-bust converter. The batterie's power delivery capabality must be sufficient for the motor, of course.
Hi to all .I try for two months to make ad work .I just use my spi controller . My vhdl script is exactly as timing diagrams chapter 9, ug334 . Is there anything that is not metioned in manual that creates problems such as desabling other spi is not mentioned . i change spi_sck frequency and have different results. why? i just tried to
i think u need dac(digital to analog converter) for this action. u can fed binary output in dac from microcontroler & dac out analog voltage according your binary. these analog votage applied in 3 IGBT,s gates for variable speed.
hi everyone ,how much max resolution that can achieve with pipelined adc in 0.18cmos?can it great than 15bit?:?:
Hi I have generated a high-speed AD converter interface in Xilinx Coregenerator for a Spartan-6 device. 400MT/s DDR with LVDS signalling. It uses IBUFDS, IBUFGDS, IDDR2 and BUFIO2 primitives. My problem is that the Coregenerator did not create any timing constraints. I am trying to set up some timing constraints in my project's main UCF file:
Hi Use a high speed parallel to serial converter (see fairchild site for details) it is a simple to use IC who need a clock a up to 16 data line converted to serial (4 line ) and back to parallel using a the twin IC All the best Bobi The microcontroller specialist
Hi. If i use an ac-dc converter (thyristors bridge) to feed a dc motor and then i use closed loop control to change the firing angle when there is speed changes my question is what is the practical limits of the ac to dc converter to do this operation? I mean what factors i must consider when using this type of control on a dc motor?? (...)
Hi You will need a PCI bridge IC to interface the PCI bus There are several FPGA who can handle the work You will also need some voice band A/D converter in order to convert the incoming audio into PCI data Or you can use one high speed A2D with an analog multiplexer on the input Using an FPGA to do the work is preferable A
HI You can use the STM32F103xxx I2S interface with an audio DA converter(many manufacture for this type of IC :ST,TI,ANALOG etc...) All the best Bobi The microcontroller specialist
Hi, All: I am looking for a high performance data acquisition board, it's better equipped with a powerful FPGA(Virtex-5) and 2 high speed A/D converter(2Gs/s). Anyone has any recommendations? I really appreciate it. Yu
Hi monady, The A/D converter which i'm going to design is high speed ADC that is folding ADC. Its resolution must be 8-bit. So latched comparator should be ok for this type of ADC? I heard also that auto-zeroing comparator is widely used in high speed ADC design..
Hi Found some stuff here: What you need is: * speed to frequency converter. That is a wheel with holes in, and a optocoupler tht react on those holes. I don't know what it is called. * To know how far the weicle has moved pr cycle. If you plan to use plain logic gate and counters, it'l
HI All I am using a converter in my design whose output rate is 750 Msps. I have to interface this converter with the FPGA. The output data of the converter is LVDS DDR.I know Altera stratix II GX can go up to 717 MHz (please correct if I am wrong). I read the Virtex 4 datasheet but could not find out the maximum speed (...)
Hello amihan1970, The Micrologix 1000 have no expasion capabilties. Your only option to add analog input to that PLC is to use the high speed inputs connected to a analog to frequency converter. Best regards!
Hi It is a bit difficult task You need to convert it to digital data using video A/D converter like the TVP5150 sample the digital data streem and convert it to digital video using hi speed processor or DSP and then sending the digital data to LCD there are some chip's who do the entire job All the best Bobi
hi friends, i have designed a 12bit dual slope adc converter with clock speed of 1Ghz for which i want to measure inl and dnl. I have looked at the methods suggested on this forum like Histogram method based on sine wave signal or ramp signal. THe problem is each sample takes anywhere from 3 to 4hrs to complete. So if i do the histogram test it
Hi I made avr309 and worked well so this device after install the drivers created a usb device not a Virtual COM as ftdi make, how can I setup to creat a virtual COM1, COM2, COM3, COMx ?????? my serial terminal need to know the com to communication and I need to set baud rate speed too regards Aldevan
hi all i want to design the high speed A to D converter for the radio software and i am new to this topic so can any one help me?
Hi, all, Is there such a device (IC) that can converter my USB host 1.1 into 2.0 version? Please advise. Wanchope
Hi You can do that using a fast DAC converter and a high speed micro DAC need to be as fast as 1 Mhz who is rare to find among micro Maybe the new TMS320F2880 from TI floting point micro-dsp can do the job You can also consider the DSP56f8xx from Freescale or DSPIC Another way is to use a CPLD or FPGA and external FAST DAC all controle
1) Try using a Stepper Motor to get direction (use a reference then count the steps taken to settle down) 2) Use a DC motor to get speed (A to d converter)
Hello, somebody knows an 8 bit A/D converter with LVDS out sampling at 40MHz ? Regards!
Hi friends, Any recommended good link or document about the advantages and disadvantages of voltage-mode control dc-dc converter?? Any help would be very appreciated. Will
Hi all! Long time no seing!!! I have this conversion problem: I have a unit that outputs 200 pulses for every 1 mile. I have an interface which accepts 200 pulses for every knot ( 1nautical mile per hour) and outputs a RS232 signal equal to the speed in knots. When I interface them I see in the output of the converter showing the 1/10th of
Hi The price depends on the processor's speed, architecture, the memory size (PROM and RAM) inside and the capabilities which depend on the peripherals present inside (Serial/ Parallel I/O, A/D converter, Timers, PWMs ....etc.)
LVPECL is the high speed data and clock standard, What do you need? Here are some converter chips to convert it to TTL and CMOS, Or may need the switching info? what is the common mode voltage of LVPECL? Is it 1.3 or 2 v?
Hi You can use the IAP api to program data file into ARM {philips LPC21xx}device You will need lot of memory if you want to play songs Here is an MP3 decode code in C language - NOT TESTED BY ME You will need to power the ARM device in full speed {60 MHz} use the LPC2138 - have a D->A converter on board Please do tell me if the
hi...anyone can tell me the mechanism of synchronous data transmittion? or is there any good reference on this topic? coz i m doin a syncronous speed converter.but not very sure how to re-establish the data in different spped...meaning the clock?need to re-establish the clock too? thaks
A/D converter? try measuring temperature try using lm25 national it is an analog temperature sensor
hi! what is the rate of the switching losses in the all mosfet losses... i am asking this for the mosfets which working hard switching condition.... for example 60khz forward converter mosfet (dc bus voltage 310V) , hard switching and we are driving the gate in optimum speed....(to understand how much ZVS or ZCS helps us)
Hi A am working on a 12 bit 2.4 GSample/sec. DAC using HBT 0.3u process. I have completed all stages except one. I need a c-mos to ECL converter which is driven by a c-mos encoder (composed of some nor gates) and will drive a Bipolar diffrential switch (possible input resistance 2-5 Mohms) The key word here is high speed. I think I have tri
1 Use parallel port for dac converter to analogy signal,then use this signal to control adjust chip for dc motor 2 Use parrallel port to generate pwm signal for dc motor.
Its a bulk device, not really tested thru put as I use it mainly with a usb2 host. (it should be around 12Mb for Full speed) The device is a usb-ide converter - very handy. Regards NTFreak