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88 Threads found on Push Pull Amplifier
BJT are fast if not driven into saturation. In addition MOSFET gate driver must provide low impedance push-pull operation, particularly fast gate discharge. That's impossible with your single transistor high side driver circuit. Just helpless.
1. That part is meant to be used in a push-pull configuration. 2. It's meant to be used in class AB or C, which means that small signal matching is not going to get you the optimal output power. 3. How did you choose your gate bias voltage? 4. Is this, by chance, for MRI applications? Fortunately the MRFE6VP61K25H is a popular part with the HAM r
Hi! I want to design a push-pull power amplifier in AB class. I tried to use the test circuit of the transistor in the datasheet to get some idea about designing. I'm using ADS and I draw the schematic of the test I think I should run HB-simulation. But I couldn't manage to run that. but it couldn't be converged due to some (...)
Hi everyone, I would like someone of you give a suggestion about the problem i have to build an electronic circuit. (1)I want to build apush-pull amplifier (which is not THE LOGIC INVERTER but is an amplifier) made in CMOS by using the CD4007ub (2)I made the following connection to try : 127948 and it work. But th
You need at least 3 transistors to make a push-pull amplifier, not just two transistors. The first transistor provides voltage gain and inverts so that negative feedback can be added. You need to learn about transistors to design a simple audio amplifier. Here is a simple transistor amplifier that uses (...)
It means that I should use mosfet push pull driver based on P and N channel transistors? Could you see link
hi everybody. my project use the push pull amplifier, working in 1-30MHz. I using ADS and had some FET model, but i can't know how to build transformer ferrite core model. 1.can you show me how to build it and the manufacturer ferrite core are often used?? 2. a my friend gives me a noname ferrite core,which is bought in china. i use (...)
I am trying to build a battery powered inverter that takes 13-17volts DC from a lithium battery and outputs 120V modified sine wave AC I tried building the Inverter using a SG3525 that is featured on Tahmid's blog here I am having alot of trouble getting it to work right, The outpu
hi we've designed a stabilizer for industrial purposes. the design details are these: the output voltage is 220V 50Hz. a microcontroller generates a sine wave. the sine wave applied to an op-amp amplifier and then a push pull amplifier. there is a feedback from the output of push pull to (...)
what are advantage and disadvantage, if we built push pull transformer couled amp with mosfet instead of bjt . Mosfets are voltage controlled. It is particularly important that the power supply V be well regulated.
hello, I want to analysis the schematic of 100W_PEP linear amp in RD100HHF1 transistor application note (ANVHF027B.Pdf), here questions: 1- How I can estimate the gain of PA in large signal? 2- Why designer inserted a 56Ohms resistor in feedback and how calculate this? 3-The input impedance of the PA how was estimated? 4-With the 13.8 supply
hello, I would like to design a linear push pull class-AB 20W power amplifier in the HF band using similar RD16HHF Mitsubishi transistors. Here are the questions: 1- In this scenario, how much gain can I get from this push pull amplifier? 2- How I should calculate optimal values of the (...)
You didn't yet mention the top0logy of the intended two transistor class-A amplifier, e.g. transformer push-pull, half-bridge,...
A push-pull amplifier, even in bridge configuration would not generate 75V unless you used the -120V supply. Suggestion: Use a standard small mains transformer in reverse. For example, use a 115/12V transformer and drive its 15V side from an amplifier running from the 13.8V supply. To get 75V out you only need to drive it (...)
What's your load? What frequency? Some kind of push-pull circuit is what first springs to mind...
Hi The following scheme is for real simple push- pull amplifier used with desk PC, I intend to R2 & R3 are so small?? What if I remove them? (2) The circuit I have been without a power supply and I guessed that the value of it = 12 V. Is my guess was
Most push pull class E topologies I've seen have the output L and C and load R all in series. But here Wong shows the load R across the filter capacitor of the output LC filter: Which way is better and why, with the R (output coupling transformer) in series or with the R across t
I have attached a picture of a folded cascode amplifier with class AB push pull stage. My question is regarding the SLEW time of the amplifier. During the 'internal slewing' when the compensation capacitors CM1, CM2 are being charged up, what is the status of the M4, M4C, M8A, M9A, M2C, M6 ? Do these mosfets operate in (...)
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.
Compared to single-ended PAs, a push-pull power amplifier has lower input/output isolation, and also about 4 times higher output impedance. All of these conduct to poor stability using conventional BALUNs. The PA it will work somehow without T2 and DC blocking caps (and feed the drains through T3), but will be hard to make it stable vs (...)