1000 Threads found on edaboard.com: Mosfet Push Pull
I'm trying to design a 1 Watt push pull amplifier using dual NPN RF mosfet at 40MHz and a 24 Volt single supply. I'm not using any inductors or transformers. I'm not sure how to bias the mosfet correctly. What type of biasing circuit should I be using ?
Since I'm using dual NPN, does this mean I need a phase (...)
Analog Circuit Design :: 07-23-2007 23:41 :: jeeves :: Replies: 1 :: Views: 2198
Hi any one help me irfp250 push pull configuration what is maximum dc volt use how to calculate?(Vdss-200V - Rds_on 0.085- Id 33A)
in a push-pull configuration the voltage across the mosfet in off state is double the power supply. Moreover there are spikes due to the leakage inductance of (...)
Hobby Circuits and Small Projects Problems :: 06-03-2006 04:21 :: stefano.delfiore :: Replies: 1 :: Views: 2008
How can i design a simple push pull with mosfet (like the classical push pull with an NPN and PNP bipolar transistor) ???
At the input, i have a feedback current Amp Op and i want to use it to cancel the distorsion..
Professional Hardware and Electronics Design :: 10-06-2003 12:01 :: bobytronic :: Replies: 6 :: Views: 4749
first circuit is pushh-pull..here you give supply voltage to the output or pull the output to gnd..
and second circuit open collector(if you use mosfet then open drain)..here you can just pull the output to gnd..
Analog Circuit Design :: 02-07-2005 14:42 :: olemp :: Replies: 5 :: Views: 2004
Are you working on a push-pull converter with center-tapped transformer?
When you are using mosfets, the magnetizing current will find its way through the body diode of the mosfet that was off.
Depending on the leakage inductance of your two windings that form the center-tapped primary, you may need a (...)
Power Electronics :: 04-20-2010 08:30 :: WimRFP :: Replies: 2 :: Views: 852
Can anyone help me with push pull Transformer Design....12V on the Low voltage side....Switching Frequency is 100Khz and Demand on Secondary side is the Primary No of turns by formula N = (V x ton) / (B x Ac) *verified by many books
where ton is the switching on time for one mosfet and B is the change in flux density which i have ke
Power Electronics :: 06-11-2011 07:59 :: arsalanarahim :: Replies: 2 :: Views: 1822
i wish to design a push pull smps with 12V input center tapped. I need 230v output. i did a trial circuit, but the mosfet is getting heated (Half bridge). Please anybody help to design a proper transformer and snubber.
Power Electronics :: 11-01-2011 06:38 :: PRAVEEN P K :: Replies: 3 :: Views: 1397
You can measure the primary leakage inductances on your push pull transformer, you can assume the dominant cap will be the mosfet, use a snubber cap 5-10x this value.
calculate R from 0.5 x SQRT(L/C), if you have very high leakage and/or reflected energy from the secondary there are other ways to work out the RC based on Ipk at (...)
Power Electronics :: 05-19-2012 02:00 :: Anna Conda :: Replies: 2 :: Views: 1000
It is a tube amplifier push-pull in Ultra Linear system. It was modified ? there is additional tone adjustment system, described below:www
Show DIY :: 08-01-2012 13:42 :: Vermes :: Replies: 0 :: Views: 1093
Since the two transistors in a push-pull amplifier are in series the current through both will be the same as long as the output is set to 0V output bias (or the output is capacitively coupled).
The mosfet resistance to current flow is determined by the gate to source bias voltage on each transistor.
Analog Circuit Design :: 11-29-2013 03:21 :: crutschow :: Replies: 4 :: Views: 260
Hi mtawab74, yes you have to use a current transformer capable of
twice your switching frequency if you try to sense the center tap on
the switching transforner or the sources of your mosfet's or IGBT's.
Or you can sense the drains of each Drain and recombine the outputs
diodes to one output ( ORing ) you have to use current mode and
Professional Hardware and Electronics Design :: 11-10-2003 10:55 :: Tornado :: Replies: 2 :: Views: 997
Hi, can anyone give me some comments about differential and push-pull power amplifier?
1.What?s the difference between the differential power amplifier and push-pull power amplifier?
In my opinion, differential means that two transistors are both working at the same time while the output signal of them are out of phase. (...)
RF, Microwave, Antennas and Optics :: 05-04-2004 21:38 :: yearn :: Replies: 4 :: Views: 4535
What does it means push-pull output port. Is it the same as a normal output port?
If I output a high in push-pull, is it that I get a high? As for outputing a low to get a low at the output?
How many output port normally appear in microcontroller?
1)Open Drain (...)
Microcontrollers :: 05-22-2004 15:07 :: tom12sg :: Replies: 2 :: Views: 1773
MMC has two bus mode:open-drain and push-pull , what does it mean?
ASIC Design Methodologies and Tools (Digital) :: 06-18-2004 04:16 :: zwj_seu :: Replies: 1 :: Views: 1963
Any references with detailed explanation of push-pull, open-drain, open-collector and other electronics interfacing logics?
Thanks in advance !
Analog Circuit Design :: 12-24-2004 07:20 :: mogwai :: Replies: 2 :: Views: 1257
My problem is:
How to satisfy the driving strength and output impedence requirement of push-pull PAD?
Anougth question: there is some solution to do slew rate control, what is preferred?
Analog IC Design and Layout :: 04-30-2005 05:12 :: zouwanghui :: Replies: 2 :: Views: 798
Can any one give an article obaut the design of push-pull stages.
Analog IC Design and Layout :: 10-05-2005 11:05 :: tyanata :: Replies: 9 :: Views: 928
What is push-pull?
Microcontrollers :: 11-09-2005 04:22 :: alexz :: Replies: 2 :: Views: 2658
For the pad design, we often hear of push-pull, push-up, push-down, open-drain, and open-source. Wiz on earth they are??? Why should we chose the different mode? Any reason?
Also, many time I hear of pin-strapping. What is it? Normally, we should use input pin or outout pin to do pin-st
ASIC Design Methodologies and Tools (Digital) :: 02-25-2006 02:28 :: johnli100 :: Replies: 2 :: Views: 3571
Does anyone know a complete reference on the push-pull cmos ota (picture is in:
page 2) ?
What are the advantages of using the push-pull single ended output configuration like in the picture above? besides the controllability of the zero?
Analog Circuit Design :: 03-04-2006 08:35 :: puyeng :: Replies: 0 :: Views: 684
by push-pull, you mean pmos on top and nmos on bottom? This can't run in linear mode or you will have a lot of shoot-though current as both of the mosfets are on at the same time.
if you are making an op-amp, or something else that needs to give an output from GND to VDD you need a different output stage. if you REALLY want a (...)
Analog IC Design and Layout :: 07-28-2006 14:02 :: electronrancher :: Replies: 5 :: Views: 809
In our project we want Full Bridge push-pull transformer. I tried to search online but could not find any proper tutorial for designing the one. Hope you guys will give some hints. I have allready made it and test it. But there are few lacking in that. The output voltage doesnot go above 25V and output having more ripple etc. That is why
Analog Circuit Design :: 08-29-2006 19:22 :: prayami :: Replies: 1 :: Views: 1996
Hey guys somebody help me to construct a push pull converter!!!
Using AS3842, MC33152 or TPS28xx series....
Hope someone new this one tnx.
Analog Circuit Design :: 10-25-2006 02:59 :: bryanwizard :: Replies: 3 :: Views: 1462
I need a little help on designing a transformer for my push-pull converter.
The input voltage is from 9 to 18v,output should be 350v,operating frequency 100KHz,output current 0.2A and the core should be a ferrite one.
The push-pull is a center tapped version.
What value should i use for the flux?
Any help is welcomed.
Electromagnetic Design and Simulation :: 03-29-2007 01:47 :: Shakirel :: Replies: 1 :: Views: 3411
I need some help in choosing the right wire size for a push-pull transformer that has 12v(min of 9 ,max of 18) input and 350v output.
The Ae=76mm^2,and it is working at a switching freq of 100kHz.From the design i understand that the output is working at 200kHz.
175W input->150W output:so there are about 19.44 amperes at the input(worst case)and
Electromagnetic Design and Simulation :: 04-20-2007 04:11 :: Shakirel :: Replies: 2 :: Views: 1593
Hey guys, got a tricky thing im trying to do, and I dont have full knwolege of using mulitple relays etc. I got a laim ass drawing below to give you some sorta idea, and ill try to make as much sense as possible. I also attached an image that someone else drew up for me, but now I cant figure out how to get it a timed output.
Okay, basically wh
Analog Circuit Design :: 04-22-2007 11:19 :: paradice1130 :: Replies: 0 :: Views: 947
what is meant by push pull output
Electronic Elementary Questions :: 05-03-2007 06:32 :: mowgli.jb :: Replies: 5 :: Views: 1865
what is meant by push pull output
Electronic Elementary Questions :: 05-07-2007 05:53 :: murali sridhar.d :: Replies: 3 :: Views: 1240
Can you please tell me what is the difference between push-pull and open-drain mode?
I searched the net and the wiki, but all answers were confusing. Can you please direct me to some site which explains this in detail or maybe you can explain it with some pictures?
I have a microprocessor which pins can be configured
Electronic Elementary Questions :: 05-28-2007 07:48 :: Rostfrei :: Replies: 5 :: Views: 37391
do you know any good tutorial in designing push-pull amplifiers?
Analog Circuit Design :: 08-05-2007 23:49 :: protonixs :: Replies: 7 :: Views: 967
I think , a push-pull output stage can provide Vout from Vdd to GND. For example, Vdd=2V, Vdc=1V and Vss=GND=0V. In this situation, the output is push-pull but class A , not class AB, right?
Thanks a lot!
Electronic Elementary Questions :: 09-26-2007 09:45 :: haoyun :: Replies: 6 :: Views: 1259
mosfet are often drive by a transformer, can I do so with a fast opto-coupler and diodes ( to step down the voltage across the opto and to cancel the "kick-back" of the transformer)
Analog Circuit Design :: 12-13-2007 21:54 :: sec :: Replies: 6 :: Views: 1467
i need a BJT amplifier circuit that work in C class and have push-pull and darlington stages.
with best regards,
Electronic Elementary Questions :: 11-28-2007 08:22 :: mtkee2003 :: Replies: 2 :: Views: 1311
Switched-mode ICs made to drive push-pull mosfets have "dead-time" so that the mosfets don't short the supply when they are half-way switching at the same time.
The extremely high current is called "shoot-through".
Electronic Elementary Questions :: 03-07-2008 18:16 :: Audioguru :: Replies: 6 :: Views: 2566
i want to design a power amplifire with below specification :
Iout = 5 A (rms) typical
vout = 24 V(rms) typical
1Mhz push-pull circuit is enough or maybe any better way to reach the specification needed.
please help for a reliable and trustabl
Professional Hardware and Electronics Design :: 04-20-2008 16:23 :: kamelian_20 :: Replies: 0 :: Views: 1108
Hi!I 'm very poor in design Balance amplifier and push-pull amplifier,So I want find some books to learn, plz suggesting.
RF, Microwave, Antennas and Optics :: 04-25-2008 21:51 :: CQCQ :: Replies: 1 :: Views: 1184
may i know what is push pull converter??
someone pls help me....any ebook pls share wit me thanx ya....
Analog Circuit Design :: 08-05-2008 00:40 :: raychen :: Replies: 1 :: Views: 833
i am designing battery charger using push-pull dc/dc converter,
can any body give/suggest links for the microcontroller program.
Microcontrollers :: 10-10-2008 07:49 :: darla1 :: Replies: 2 :: Views: 1221
In push pull smps (offline), i am worried that my transformer will saturate due to the non balanced switching, -i mean the "flux-walking" effect.
it is said i may use current mode to solve this.....but how do i have my overcurrent trip only trip due to magnetising current, and not due to the "transformer current" or load current ?
Electronic Elementary Questions :: 11-26-2008 14:31 :: eem2am :: Replies: 0 :: Views: 1018
I have simulated a class A push-pull amplifier, but i don't understand
what i've obtained...
In a class A push pull the maximum current in load is Imax=2*Iquies;
so if load is R//C :
Is it right?
If i use as load only R, the first condition is met; but if i consider
only C (without (...)
Analog Circuit Design :: 12-11-2008 02:58 :: lionelgreenstreet :: Replies: 0 :: Views: 516
Hi i am doing inverter push pull configuration i want to implement PID loop to control output volatge.I am confused to how calculate the P,I,D parameter for the inverter and also how is duty cycle is related to the output of push pull converter based inverter.
Microcontrollers :: 04-06-2009 09:45 :: praveen_palaparthi :: Replies: 0 :: Views: 925
Hey, I've been looking all over the net for a 20k pot (22k will do too) with either a push/pull or a rotary double throw switch. Doesn't matter if it's SPDT or DPTP, as long as I can switch between two lines. Anyone knows if these exist and where I can find one?
Thanks in advance
Electronic Elementary Questions :: 04-10-2009 15:11 :: BeëlzeM :: Replies: 0 :: Views: 1050
I am making push pull type 50Hz inverter using PIC16F883
I configured uC in half bridge mode for 20 mSec. period
1) Signals I am getting on P1A & P1b is just complement of each other.
Suppose for 30 % duty cycle without any deadtime what I am getting
is some thing like this
I CHECKED THIS ON MPL
Microcontrollers :: 05-07-2009 07:00 :: 1206.sachin :: Replies: 0 :: Views: 1293
Attatched is class ab output buffer.
And the following equation is push pull current relationship.
I don't understand how that equation works.
Give me an advice, thanks.
Analog Circuit Design :: 06-09-2009 02:19 :: ljy4468 :: Replies: 3 :: Views: 938
Can anyeone recommend me some good starting point for a push-pull dc-dc design?
Any Application Note or docs is welocome..
Analog Circuit Design :: 08-20-2009 11:51 :: berni80 :: Replies: 1 :: Views: 2833
I would like to design a simple current boster op amp with complementary push pull driver who can work from a single supply(mandatory)
It should drive up to 150 mA of current so 2N3904 & 2N3906 should serve best as a complementary peir in the design
The circuit should work from +9V and have a Gain of 5V/V max, the op amp should b
Analog Circuit Design :: 09-19-2009 08:45 :: bobcat1 :: Replies: 11 :: Views: 4882
Appreciates if anyone could tell me what is the basic concept of push-pull amplifier and why it become the popular topology for CATV amplifier?
RF, Microwave, Antennas and Optics :: 10-01-2009 23:55 :: rfreak :: Replies: 0 :: Views: 628
Im still newbie to this analog circuit design, so i have something to ask about the circuit in the attachment below. The circuit is push pull Class B Amplifier with AB Characteristic.
My questions are:
1)The purpose of mirror currents is to provide a current into to the collector of T5,right? For what purpose is it actually and how co
Analog Circuit Design :: 11-29-2009 13:55 :: pYrana13 :: Replies: 0 :: Views: 716
I have a push pull converter with mulptiple outputs and it is working well in open loop. I would like to close the loop by implementing voltage mode conrol. I wanted to use TL494 but the information there is inadequate. Is there any other chip I could use without going the digital route?
Power Electronics :: 01-09-2010 07:55 :: Optimus_prime :: Replies: 1 :: Views: 937
The toroidal core is salvaged from an ATX power supply (the one used for coupled inductors in the supply). The wire used is 26 Guage, with number of turns 20:10, 10:20, 60:30 ................ etc etc etc. All the times, I have seen that usually output is much higher than expected.
Also with very minute loads, the input current is increa
Hobby Circuits and Small Projects Problems :: 03-26-2010 14:39 :: aliasgherman :: Replies: 6 :: Views: 2937