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Hi people, 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 (...)
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) Regards kicha 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 (...)
Hi, 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.. Regards
first circuit is 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) you can just pull the output to gnd..
Hello, 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 (...)
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
Hai 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.
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 (...)
It is a tube amplifier push-pull in Ultra Linear system. It was modified ? there is additional tone adjustment system, described below:www
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.
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 pulse b
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. (...)
Hi, 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 (...)
Hi ..guys MMC has two bus mode:open-drain and push-pull , what does it mean?
Any references with detailed explanation of push-pull, open-drain, open-collector and other electronics interfacing logics? Thanks in advance ! mogwai.
dear all, 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? thanks
Can any one give an article obaut the design of push-pull stages.
What is push-pull?
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
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? Thanks
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 (...)
Hi... 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
Hey guys somebody help me to construct a push pull converter!!! Using AS3842, MC33152 or TPS28xx series.... Hope someone new this one tnx.
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.
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
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
what is meant by push pull output
what is meant by push pull output
Hello! 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
hello! do you know any good tutorial in designing push-pull amplifiers? thanks...
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!
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)
HI i need a BJT amplifier circuit that work in C class and have push-pull and darlington stages. with best regards, Mostafa
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".
hi all 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
Hi!I 'm very poor in design Balance amplifier and push-pull amplifier,So I want find some books to learn, plz suggesting. THS! -CQCQ
may i know what is push pull converter?? someone pls help me....any ebook pls share wit me thanx ya....
helo all i am designing battery charger using push-pull dc/dc converter, can any body give/suggest links for the microcontroller program. thanks darla
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 ? transfo
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 : 1)Voutmax=R*Imax 2)slewrate=Imax/C Is it right? If i use as load only R, the first condition is met; but if i consider only C (without (...)
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. Help me..........
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
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
Hi, all 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.
Hi, Can anyeone recommend me some good starting point for a push-pull dc-dc design? Any Application Note or docs is welocome.. Thanks
Hi All 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
Hi all, 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? -rfreak-
Hi! 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
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?
Dear, 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