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# Help Rds

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calculate rds , pic rds , mosfet rds , rds schematic
28 Threads found on edaboard.com: Help Rds

## Converting 24 Volt DC to 580 volt DC 1 Amp supply

I want to design 24 Volt DC (2 nos of 12 volt batteries in series) to 580 volt DC supply using UC3856 and IR2010S 4 nos of MOSFET in h bridge form, MOSFET should be low rds on as 2.2 mili ohms chips with the chopper transformer ideas and help is required

## Help needed to resolve the issue im facing with Modified wilsoncurrent Mirror circuit

Hi All, I have made a current mirror circuit as attached below with Rin as 5K,Vin =15Vdc 101778. Vo = 24 to150Vdc. IRef=(15-Vgs)/(5K+rds) As per my calc IRef=2.2mA Approx. I assume the same current should mirrored in Iout irrespective of the voltage given @ Vo. Mosfet Used: Si7956Dp (Dual N-channel MOSFE

## MDU2657 AND 2654 help witch choosing alternative one

Hello i'm Daniel and i'm new on this forum but from the start i need your help. My problem is that mosfets on my gpu are burned (3of them) . My gpu has 2 types of mosfet: MDU 2654- I asked main eu director to send me datasheet and i got this MDU 2657

## Measuring resistance across a MOSFET

Given the following circuit: 86634 Can I accurately measure the resistance of R4 (assuming rds(on) << 1 Ohm). As a corollary, can I repeat the measurement on R5 with the following circuit? 86635 Sorry if this is basic, just a little confused. Thanks in advance for the help.

## help with buck converter circuit

Hi! I am putting together a DC-DC buck converter, which will be used in Maximum Power Point Tracking for solar cells.For testing purposes, I built a converter circuit that's supposed to take in 12V as input and output 5V. I am using an MTP3055VL n-channel power MOSFET, an MBR2045-CT Schottky rectifier (instead of the 1n4001 in the picture), a 22uH

## DC operating points details in ADS

Hi all, After running the DC Simulation in ADS, we can verify the DC operating point. Whether the following statements are correct?? VDSsat = Vod ???? Gds= 1/ rds= 1/rO ?????????? Vod is the overdrive voltage, what is VDSsat? I know that Vod= VGS-Vod but What is VDSsat?? Does anyone could help me? Regard.

## To find 1 + δΔT from normalized RDs(on) vs. temperature curve of mosfet spec

hi all, I need to find the 1 + δΔT from the normalized rds(on) vs. temperature curve. δΔT is the temperature dependency of the rds(on). please help me in finding out 1 + δΔT .I have been attached one of the mosfet spec. please let me know the procedure to find out. thanks in advance cheers:)

## Sparkfun Si4703 FM Receiver Breakout Board Arduino Library

I have wrapped up the code that comes with this FM receiver from Sparkfun into a library. I also took the opportunity to tidy things up a bit and fix the rds. help yourselves.... Instructions and download here: Simon Monk: Sparkfun Si4703 FM Receiver Breakout

## MOSFET interchange help

Hi and thank you for your help. The originals were Toshiba K2837 and the new ones STF30NM60. When I use a DMM and using ground reference, I get a 10V difference at the gates on each leg of the bridge. With the scope I get a significant difference between the high and low sides. Should I not be hooking up my scope probe to ground?

## help with mosfet current gain

what is the measure of mosfet transistor in the current gain

## Help with feedback amplifier output range and PMOS sizing in LDO design

Hi All, I attach the schematic (including dc node voltages) for LDO with two-stage OTA and PMOS power device. In order to get dropout voltage of 35mV, I used the following equation to size up the PMOS. W/L=(2Id)/(kp*vdssat2) and vdssat=35mV. I end up with a very huge PMOS, W/L=469153. The regulation voltage Vreg is set based on the following, V

## RDS (Radio Data System) Demodulation With VHDL

hi to all, maybe someone can help me. i have converted the analog mpx (fm) signal from a common radio chip into a digital signal with a ADC. now, i want to demodulate the rds data from the fm baseband signal on my FPGA. first i reduce the bandwith to 57 KHz (which is the carrier signal) and after that i will try to demodulate the digital (...)

## help needed regarding PARAMCHK

when im simulating a spice file in eldo im getting a warning "rds at current temperature = 1.53215e-05 is less than 0.001 ohm. Should be set to zero, set PARAMCHK=1 to enable clipping." so in the tsmc018 tech file i gave PARAMCHK=1,but its givin the same warning,do our simulation results change due to this warning

## Current Measurement - help needed with shunt resistor

Hi, My requirement is to measure currents in the range 10uA to 100mA (resolution = 10uA). I also have a NIDAQ(6105) with a resolution of 100uV (appx) to log the voltage data automatically. I am planning to use LTC6100 so that I can amplify the current more so that the DAQ can log the data. The LTC6100 requires a minimum sense voltage of 300uV to

## Help about Current mirror designed use subthreshold mos

Hi all, What should be taken into account in designing a current mirror using subthreshold pmos, where Vds > 5*VT(26mv)? Since the Vgs's control on Ids is much more stronger in subthreshold area than in saturate area, the current copy performance of current mirror using subthreshold pmos is better than using saturate pmos, is that correct?

## PMOsfet Overheating, help please?

Hi Hameed, Thanks for your suggestion. My IRFZ44N the NMosfet is fine and no overheating at all so what Half Bridge IC Driver do you recommend for the PMosfet? In general does the circuit looks OK to you? Any ther suggestions/improvements recommendations? thanks again Cy Added after 52 minutes: Also

## Matlab codig for the FM stereo

Hi all, I need a help on the Matlab codig for the FM stereo. I know how to produce the stereo pilot frequency but not for the L+R and L-R and rds. Can anyone here help me please? I need to come out the FM stereo as shown in the attachment! Please do refer and comment on how to do in Matlab...

## rds encoder help please

hi all this is my first time in this forum i need ur help if u can i have downloaded at earlier time a free based rds encoder but the website isnt online anymore i dont know why peaple dont aid peaple to host for free something free for public and student so i have the files of the free rds encoder but i dont have the connection from pc to (...)

## urgent! pls help me with DC gain

I am designing an two-stage opamp. Following one is my circuit. I use this equation to calculate the DC gain, which is 3227(714db). gm5(rds5//rds1)gm3(rds3//rds7) But the simulation result given by LTspic is 76.4db, about 6606 times. why is it so large? but the other parameter is nearly the same as the ones calculated. (...)

## TDA7330A IC datascheet request

Hi. I'm looking for datasheet of this IC. I can't find it. Can you help me? What is the difference between TDA7330A and TDA7330B. Can i replace it?