1000 Threads found on edaboard.com: Type 2 Compensation
do you mean a 2-stage fully differential op-amp? what is your amplifier architecture? which type compensation?
Analog Circuit Design :: 02-24-2007 20:07 :: gingerjiang :: Replies: 3 :: Views: 804
I think ,if I type compensation the err amp is ota.
II or III type compensation both ota or op-amp is ok? is it correct?
Analog Circuit Design :: 11-11-2007 10:48 :: sunoftech :: Replies: 2 :: Views: 1009
does anybody know how i can model a 4N35 opto coupler for use in an offline SMPS feedback control circuit ?
it is a one transistor forward converter and i need to use type 3 compensation.
Page 2 (top) of this shows type 3 compensation
Professional Hardware and Electronics Design :: 01-09-2009 14:34 :: eem2am :: Replies: 3 :: Views: 3705
Need details or reference for type 3 compensation in UC3525 based dc dc converter. I need practical design steps that will be helpful in designing.\
Any member who have access for such design steps details or any software that help for such calculation?
Please give your comments/suggessions.
Power Electronics :: 06-23-2009 03:59 :: bdmehta :: Replies: 0 :: Views: 886
Can the RHP be dealed with the type III compensation, because the extra zero.
Analog Circuit Design :: 04-06-2011 15:50 :: bluesmaster :: Replies: 1 :: Views: 864
Hi - I'm working on a design that uses a Linear LTC1700. I'm trying to choose values for the parts that sit on the ITH pin, but just want to make sure I'm understanding the type of network that it is using. Looking at the block diagram on page 6, it looks like it has an error amplifier wi
Analog Circuit Design :: 09-13-2012 01:54 :: uoficowboy :: Replies: 1 :: Views: 336
Hi, what are poles and zeroes in a compensation network like type-3 compensation for 2 stage cmfb amp.
how we can boost phase margin without affecting Bandwidth. by using miller compensation cap, BW decreases.
Analog Circuit Design :: 08-30-2014 00:41 :: Safiya :: Replies: 1 :: Views: 221
I am a french student in trainning course in M.E.V company (Toulouse in France).
And I would like to condition a temperature sensor type PT1000.
I think about an FPAA solution.
I have 4 sensors.
A discret circuit already exist but it is very noise sensitive.
So it's the reason why i would like to integer this circuit in a chip.
If somebody ha
Analog Circuit Design :: 03-03-2004 06:01 :: Guillaume :: Replies: 2 :: Views: 3402
In what type of applications you use this law?
I have never heared for it.
Electronic Elementary Questions :: 07-19-2004 03:58 :: epp :: Replies: 4 :: Views: 1350
What is the compensation network used for ?
There are type I ,II and III, what's the difference ?
Analog Circuit Design :: 10-18-2004 03:59 :: chmr :: Replies: 10 :: Views: 3252
slope comp is for current mode ic's only. better to start with voltage mode (simply comparing error voltage to a ramp) because it is more clear.
so there are a few kinds of compensation. if your output cap has a lot of ESR, you get a free low-frequency zero and can use type 2 compensation (1 pole, 1 zero). if you have a low-esr (...)
Analog IC Design and Layout :: 02-24-2005 20:08 :: electronrancher :: Replies: 9 :: Views: 1335
what 's buck converter do you work ?
Voltage mode and current mode is so different.
if you using voltage mode , you can use type ii and type III compensation .
but you using current mode , you just using R,C compensation in the Error amplifier out .
Analog IC Design and Layout :: 06-18-2005 00:10 :: mitgrace :: Replies: 3 :: Views: 1378
in the volatge mode dc/dc for buck . you need do compensation . becasue L.C is phase shift , you need to compensation to improve the total system phase margin . You can use type II or type III compesation method
Analog IC Design and Layout :: 06-18-2005 00:29 :: mitgrace :: Replies: 7 :: Views: 1213
this is a BJT type bandgap ckt,
u can check Fig4.4 in
and this book also discuss what u want to know in some chapters.
Analog Circuit Design :: 06-11-2005 01:02 :: Btrend :: Replies: 4 :: Views: 821
Any comments (pros & cons) on using opamp and OTA(output Transconductance Amplifier) for compensation as type 1,2,3 for DC/DC converter (voltage mode control) ?
Analog Circuit Design :: 03-11-2006 19:27 :: hoonsk :: Replies: 0 :: Views: 833
i have a question, The dirver MOS of LDO is used. what different the MOS use N-type or P-type??? Using NMOS driver have some advantage???
use nmos has lower ouput impedance and no need external capacitor for
Analog Circuit Design :: 04-10-2006 04:19 :: surianova :: Replies: 9 :: Views: 1437
need help to design /analyse open / closed loop
of pwm boost type dc-dc convertor.
best if we can have BODE plot
to fix those inductor, capacitor,... values
thanks in advance.
Analog Circuit Design :: 04-30-2006 22:28 :: jcpu :: Replies: 4 :: Views: 1064
I am designing a project. I use ADC for reading small voltage of thermocouples. My project need to used for multi-type of thermocouples. So I need to compensate cold-junction of the thermocouples but I don't know how to. Please advise me, if I use software compensator by using a thermistor at cold-junction.
Also I don't understand about isother
Robotics and Automation Forum :: 06-07-2006 00:07 :: BabyTiger :: Replies: 6 :: Views: 2370
How do we analyse temperature compensation in op-amps using spice?
I am using spectre for the same. So how can this be done for a bandagap type of circuit?
Analog IC Design and Layout :: 09-24-2006 23:00 :: karma_yogi :: Replies: 1 :: Views: 1084
a more professional approach is to use sigma delta ADC(16bit or higher) and use a microcontroller to calibrate and linearize ADC output in digital domain.
Such these ADC are available from TI(BurrBrown,ADI,Linear,...),for example AD7715,AD7714,ADS1216,ADS1241.
All termocouple types with any temp range can be defined in firmware.
Professional Hardware and Electronics Design :: 01-04-2007 11:06 :: 7rots51 :: Replies: 6 :: Views: 3162
I am studying buck DC/DC now.
For voltage control pwm, some papers introduce the typeII and typeIII compensation. But when I study some datasheet like TI's TPS62300,TPS65023...
It looks there is no external compensation RC with voltage control mode.
Can anybody give me some idea on how to fulfill this (...)
Analog Circuit Design :: 11-28-2007 02:41 :: tonywai :: Replies: 11 :: Views: 1585
I am using ad595 for a project and a K type thermcouple.
My problem is that ice point compensation does not work properly.
when I disconnect the thermocouple from circuit, I short circuit the input
for this test, and I get around 60 mv in output of the ad595 that shows
around 6'C but the room temprature is around 25 'C. can anybo
Microcontrollers :: 12-14-2008 14:36 :: myid123456 :: Replies: 3 :: Views: 1630
It sounds like you are using the comparator in an "auto-zero" type configuration. That changes everything, since in the autozero phase, it is essentially an amplifier in unity gain feedback.
What I would suggest in order to maintain auto-zero capability is to consider auto-zeroing using the first stage in order to maintain stability. The first
Analog Circuit Design :: 12-29-2008 10:36 :: JPR :: Replies: 7 :: Views: 1801
Dear friends ,
can some one share some details about type-3 compensation simulation for DC-DC development. I have simulated type-3 given in intersil document which i have attached. But whatever i have simulated is bit revese and stange also. So please can some one eloborate/help on this.
I don`t know if
Analog Circuit Design :: 04-28-2010 03:50 :: LvW :: Replies: 7 :: Views: 768
While using SG3524, for buck converter, I need to give a feedback to the error amplifier at pin 1. At the output of the error amplifier (pin 9) I have the Caps and Resistors for compensation. Do the capacitors here need to be ceramic disc capacitors necessarily? Or any specific type of capacitors?? Cannot I use Electrolytic aluminium capacitors? T
Power Electronics :: 09-02-2010 17:39 :: AbhimanyuSingh :: Replies: 3 :: Views: 800
These are different things. One stage OTA, or rather an amplifying stage with one high impedance node, that is meant to work in a feedback configuration is compensated by a cap to ac ground. If you have a 2 stage amplifier you also have two poles which in uncompensated state are kind of close to each other. You can still compensate by a cap to grou
Analog IC Design and Layout :: 09-21-2010 14:06 :: sutapanaki :: Replies: 2 :: Views: 1303
In one of consideration, for PFM with hysteresis type, the voltage ripple caused by ESR of output capacitor should be larger than the comparator hysteresis.
Analog IC Design and Layout :: 01-25-2011 20:11 :: leo_o2 :: Replies: 1 :: Views: 515
in general compensation of capacitors and resistors in error amplifier is done so that at cross over frequency at which overall gain will be unity the phase angle does not come at 360 degree. i.e. there should be some phase margin plus at cross over frequency the resultant gain slope should be of -1 type (-20db/decade). of course you have to read a
Power Electronics :: 09-22-2011 07:43 :: ElectroPhysics :: Replies: 2 :: Views: 630
Thanks for the help!
I'll compensate it with type II compensation network. However I have one more question.
The attached figure shows the bode plot for the same converter in DCM. However I've changed the small signal feedback gain a bit. Green line corresponds to k=0.1; blue line to k=0.15 and red on to k=0.2.
Simulations (using ideal com
Power Electronics :: 12-19-2011 08:28 :: pikulin03 :: Replies: 4 :: Views: 2022
if I use a type B thermocouple, which gives 0V between 0 °C and 50 °C, is needed the cold junction compensation? if yes what is its temperature coefficient?
Thank you for reply.
Robotics and Automation Forum :: 08-03-2012 12:54 :: rbacchi :: Replies: 10 :: Views: 2108
To me this looks simply like "feedforward compensation" in
the feedback ladder. You see it often enough in regulators.
Also called "type III" compensation. There should be no DC
term, then your concerns about temperature drift (from that)
go away. PSRR should be improved at medium frequencies
where you are making better use of amplifier (...)
Analog Circuit Design :: 06-07-2012 11:31 :: dick_freebird :: Replies: 2 :: Views: 850
it depends on the load type, but usually some type of isolation is necessary to prevent electrical shocks. the simplest yet high performance feedback isolation is opto-coupler which consists of a voltage reference (e.g. TL431) and an error amplifier (opamp or TL431 itself). also compensation could be done in the secondary side.
Power Electronics :: 12-02-2012 05:12 :: goodboy_pl :: Replies: 2 :: Views: 419
stability is the inverse of the Q factor of the circuit, so higher the Q , more stable is possible.
Crystals have a Q of 10,000 to 100K for different cuts on the crystal ( AT cut vs SC cut)
Watch crystals used lower Q but not MEMs tuning fork is same as watch crystal 38KHz so these are cheaper and used now for watches and PICs
Hobby Circuits and Small Projects Problems :: 04-20-2013 23:50 :: SunnySkyguy :: Replies: 1 :: Views: 319
I have recently been tasked with designing PCB's for Ethernet Connectors.
This can either be a PCB internally within the connector, or a PCB where the RJ45 Jack is mounted.
Most PCB's are Double sided and the internal version has no GND.
In both cases, it seems that using interdigitated capacitors i.e. finger tracks between certain pins can he
RF, Microwave, Antennas and Optics :: 02-13-2014 06:40 :: kewe :: Replies: 2 :: Views: 361
Dear friends ,
I need to make a j type temperature controller .
PLease suggest me how to proceed , never used one before .
1. I need circuit used for j type thermocouple signal amplification using opamp op07 and diode for cold junction compensation , I have seen temperature controllers using thermocouples in mkt and they use a diode (...)
Microcontrollers :: 04-10-2014 07:37 :: jit_singh_tara :: Replies: 0 :: Views: 200
The transfer function of the type II compensation network is discussed in the linked IRF datasheet on page 29. R6 can be used to set the amplifier gain, but it doesn't affect the frequency characteristic (the poles and zeros).
A more detailed discussion of different error amplifier compensation schemes can be e.g. found in the (...)
Power Electronics :: 08-05-2014 18:11 :: FvM :: Replies: 6 :: Views: 318
i need help for
To interface J type thermocouple to PIC16F877 and also want to display it to the lcd16X2 display.
i want to use inbuilt ADC for the analog to digital conversion of given thermocouple.
Microcontrollers :: 10-16-2014 06:29 :: email@example.com :: Replies: 3 :: Views: 199
I have a doubt related to temperature compensation circuit,in this circuit which type of smd resistors should i use??
Professional Hardware and Electronics Design :: 11-12-2014 00:03 :: Kick :: Replies: 4 :: Views: 334
i am facing a problem with type array of array. below
i have given a simplified version of the problem
type my_typ1 is array (0 to 1) of std_logic;
type my_typ2 is array (0 to 1) of my_typ1;
out_put : out my_typ2; (...)
ASIC Design Methodologies and Tools (Digital) :: 05-08-2002 04:53 :: srisrisri :: Replies: 2 :: Views: 1912
i have a Character Display 4 x 20 - 20 ° +85 °
with a Voltage DOUBLER on board.
i need a shematic for temperature compensation
for the Contrast of the Display
the voltage range is 0 V till 5V
Can somebody help me
Professional Hardware and Electronics Design :: 06-07-2002 10:37 :: Blubb :: Replies: 2 :: Views: 1390
I am just collecting the schematics, how to build and build-in the RDS into FM receiver of older type. The dimesions do not play the role. I think about somethig special: like "unusual" display.
Maybe some of You have interesting infos or links?
Professional Hardware and Electronics Design :: 06-27-2002 10:06 :: sulek :: Replies: 2 :: Views: 1436
i think you can do it in another way. First you must know what type of temp sensor you have, e.g. pt100, type of thermocouple (J K S or so on).
Then look at Maxim and Linear Technologie or other manufactors for special chips for themperature measurement. There are some chips on the market with this feature.
For example: you have
Professional Hardware and Electronics Design :: 07-25-2002 01:29 :: Roscoe :: Replies: 7 :: Views: 2355
I need modulate carrier 2.4GHz by signal bandwidth 7MHz, transmit-receive and demodulate. What type of modulation should I use. I want to get simple and low cost device.
If you have any suggestions, scheme I will be grateful.
RF, Microwave, Antennas and Optics :: 08-13-2002 19:04 :: blekot :: Replies: 5 :: Views: 2538
How easy is it to make a DIY type of a flash drive (also called as thumb drive or pen drive) of say 16MB capacity? Are there any circuits available for the same?
Professional Hardware and Electronics Design :: 09-22-2002 05:08 :: bimbla :: Replies: 0 :: Views: 875
AD594 for J type
AD595 for K type thermocouples...
you can get 10mV/Celcius easly.
Hobby Circuits and Small Projects Problems :: 07-22-2004 17:31 :: Sobakava :: Replies: 5 :: Views: 7160
Does anybody working in the field of jitter compensation in SDH -> PDH Desync? Need some help there...
Professional Hardware and Electronics Design :: 12-27-2002 01:45 :: asjoshi :: Replies: 0 :: Views: 651
There are several manufacturers that supply high speed D type flip flops. The links below show data sheets for a couple of chips that should do the kind of job you
Professional Hardware and Electronics Design :: 12-28-2002 11:45 :: House_Cat :: Replies: 2 :: Views: 863
Would any people like to introduce me some good book or material,which
describe the detail of DC offset compensation feedback of
I am currently working on high-speed limiting amplifier, however still
not clear about the usage of the DC feed-back. Personally, I think it
make the circuit operating poi
RF, Microwave, Antennas and Optics :: 01-05-2003 00:21 :: mike_bihan :: Replies: 4 :: Views: 1327
I´m working in a USB design based in EZ-USB chip AN2131 of Cypress. This board must be connected to a PC and I need a type A male connector for PCB mount. I can´t find this connector in the web, please if anybody have a part number o any information please say me. Thanks and regards. 8)
Professional Hardware and Electronics Design :: 01-24-2003 11:03 :: joebazoka :: Replies: 5 :: Views: 3107
Which type of notch filter (15 MHz BW) is best suitable for GSM band. Which simulator shoul I prefer. I am thinking to start with Parfil and check with Sonnet. Is it ok?
I need to reduce the insertion loss. I want to choose stripline with air subtrate and thick lines and shorted or taped interdigital config. Is it OK? Do you have any practical
RF, Microwave, Antennas and Optics :: 03-10-2003 06:57 :: g86 :: Replies: 7 :: Views: 2208