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Questions tagged [push-pull]

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A circuit that uses a pair of active devices (such as complementary transistors) to alternately source current ("push") to or sink current ("pull") from a load.

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I know about push-pull amplifier stage, but recently I came to know additional configurations like push-push and pull-pull stages, from a question I was solving. But couldn't find any sources about ...
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I need to design a circuit that can take a digital output from an MCU (3.3V) and amplify it to a selectable output voltage. The output voltage should be configurable between 3.3V, 5V, 12V, and 24V. ...
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A FPGA I/O is connected to the OE# of a transceiver and I want to ensure that OE# is high (>=2V) when the system powers up and until the FPGA is configured. The system is battery powered and the ...
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I want to implement some buttons in my controll scheme to controll the operatings of the system controlled by a NUCLEO-H723ZG uC. For the switches i will be using ones actually rated for 230 V AC, ...
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I’ve designed and built a 12V–360V DC-DC converter. The circuit has just been powered up and is under testing. The output is stable at 360V. I had to damp the RCD clamp with an additional RC snubber, ...
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I have designed a 12V–360V push-pull converter. I would like to power it up with the least possible risk. I want to make sure that the LM25037 PWM controller and the FET driver circuits are working ...
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The CMOS CD4022 is a divide-by-8 counter with 8 decoded outputs, pinout attached below. Now suppose I want to use the 4022 to divide by 4 instead of 8. Can I just put a capacitor from the '4' output ...
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I’ve designed a 12V-to-360V push-pull converter that will operate in both CCM and DCM modes. In CCM mode, the system’s transfer function is completely fine, but I have some concerns about DCM. When ...
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I'm designing a galvanically isolated push-pull converter. My issue is that the current sense resistor and the optocoupler (opto-isolator) are located relatively far from the LM25037 controller. My ...
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I’m using a current transformer for current-mode control in a push-pull converter. The current sense resistor is placed next to the current transformer. However, the LM25037 controller is located a ...
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I am using a voltage to current converter to inject a current in a load, that is proportional to a voltage that is being generated on an MCU. The goal is to generate a sinusoidal current signal of ...
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I’m designing a current-mode controlled push-pull converter, where current sensing is implemented using a current transformer. My question is: am I correct in thinking that the current transformer ...
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Anyone ever tried small transformer to apply drive to the upper or highside? MOSFET in push pull say for a square wave oscillator so can use 2 N-channel MOSFETs rather than a P-channel Is it really ...
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I'm still working on designing my push-pull converter, for which I’ve already managed to determine the open-loop transfer function in this question: How can I measure the transfer function of a push-...
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I’m designing a push-pull converter (still). I have determined the required input capacitance (5600 µF) for a given input voltage ripple (100 mV). The formula I used was derived from the calculation ...
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I built a push-pull transformer with the following winding arrangement: NS1 (2T) NS2/2 (34T) NP1 + NP2 (2T + 2T) NS2/2 (34T) I measured the following values: Lp1 = 32.84 µH @ 10kHz, φ = 90 Lp1 = 40.8 ...
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What does 2556 do? It connects the emitters of the push-pull amplifiers to gnd. Is it just a noise filter?
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//Edit: Thanks to the comment from @periblepsis, I fixed the calculations This is an academic question driven out of desire to gain understanding so please avoid comments like "that is not done ...
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I’ve designed a Class B Push-Pull amplifier that uses op-amp feedback and is powered by a symmetric DC supply of ±Vbat. A sinusoidal signal, V₀·sin(ωt), is applied to the non-inverting input of the ...
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I am making a amplifier that consists of an input stage (differential pair and current mirror etc), a voltage gain stage (Sziklai pair) and on the end I want a classic AB push pull output stage to ...
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I have a project that requires simultaneous functioning 5 push/pull solenoids using 1 push button switch. Would anyone have any suggestions on how to do this schematically and what devices may be best ...
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I am trying to design a circuit with the following specifications: Topology: Push-Pull Input Voltage (DC): 24 V Output Voltage (DC): 400 V Maximum Output Current: 2.5 A Output Power: 1000 W Operating ...
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I am designing a 12V-380V push-pull converter that will power an inverter. Initially, I designed the circuit mostly for CCM operation, naturally including an output inductor. However, due to the high ...
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How does the load resistor R2 form a current-source load? Also, I don't understand how C1 acts as a bootstrap capacitor?
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I have calculated the parameters for the transformer I need to build, but I am having trouble with the implementation. Since this is the first transformer I am designing and building myself, I don’t ...
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I am studying the operation of a push-pull converter from an excellent book. Currently, I am focusing on the state when both transistors are turned off, and previously, the \$T_{r1}\$ transistor was ...
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I'm trying to understand the operation of this lithium-ion battery dissipative balancer circuit. I believe I have a good grasp of how it's supposed to work. I simulated it in LTspice, and it functions ...
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I am trying to design an ac current source. It should output a current of 30 Arms at 50 Hz and have no more than 12 Vrms open circuit voltage. The current is fed into some device under test (DUT) and ...
EeEmDee's user avatar
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I'm simulating a BJT-based push-pull circuit used to drive a PFET as shown below in LTspice but the gain factor of PBHV8140Z (NPN) seems incorrect. I'm seeing 1.96uA into the base, while seeing 1.14mA ...
Ken's user avatar
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I would like to build a PWM switch model for the following voltage-fed push-pull converter (which operates in current mode) to determine its transfer function. I can handle simple topologies like ...
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I am designing a Voltage-Fed Push-Pull converter, and I would like to determine the system's transfer function in both CCM and DCM modes. The control will be in Peak Current Mode. I am reading through ...
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I am trying to understand and practically apply slope compensation. The IC I intend to use is the LM25037. The datasheet explains slope compensation in detail, which I have understood, and I know why ...
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I am working on a project which involves the design of IC 555 timer. It includes an "output stage" power amplifier (pin 3), Doing some research I found on Wiki ...
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I am designing my first voltage-fed push-pull converter, and I got stuck during the transformer sizing process. I am not exactly sure how to proceed. I have determined the primary and secondary peak ...
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I'm designing a circuit to mix multiple audio signals generated by a MCU. There are some pulse signals generated with timers as well as a few custom waveform signals generated with DACs. The signals ...
Tooniis's user avatar
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I am currently trying to implement as the title says some voltage buffers with a current buffer for the output, this is so the output signal can withstand higher currents. Below is the circuit I ...
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Hello guys I'm relatively new to Embedded engineering. I wanted to know if there's any specific rule that experienced embedded engineers use when selecting when to use one of these output ...
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Looking at the circuit below: How do I analyze it? Specifically, why is the output able to go nearly all the way to +12 V but not beneath 0 V? I'd expect that when V(sig) < 0, since current flows ...
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I always see that the NPN transistor is used in handling the positive signal while PNP transistor handling the negative signal in a push pull amplifier. What is the theory behind it? Can we swap the ...
user42423's user avatar
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I'm using a PCF8574 I/O expander in my design. I noticed that it has a limited current sourcing capability of about 300 µA. I wondered, why is that? The datasheet has the following schematic of each p-...
Robert's user avatar
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For this circuit, why did we use a diode between the bases of the two transistors?
FISqrt's user avatar
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im building a dc-dc converter using center tapped transformer. The issue i have is ringing on mosfet drains staying through whole half wave. The voltage on capacitors on secondary side rectifier seems ...
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I'm trying to make a power amplifier to amplify a 200Hz to 5kHz sine wave (2Vpp) from waveform generator to ±150V. The load will not draw more than 600mA, so the amplifier would need to be around 100W....
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I'm quite new to the topic and for fun I'm building a low frequency square wave generator with parts I currently have. Overall it works just fine while built on a breadboard, however I would like to ...
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I was recently testing using SN74LVC1G17DCKR and was having trouble getting the output voltage to reach close to Vcc as per the datasheet. Vcc input is 5 V. My input was 3.27 V and I was getting ...
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I have a push-pull converter that uses BSC040N10NS5ATMA1 MOSFETs. I have also tried using CSD19533Q5A MOSFETs. The FETs keep blowing at low power output (about 15 W). I am trying to get to 100 W. They ...
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I took apart a power supply unit of some old kitchen lamp, and inside was this push-pull converter. It has an "optional" part, shown at the bottom of the schematic, which is not actually ...
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I am beginner in driver circuitry. I am trying to do a MOSFET driver that can work at over 300kHz with a current sink capability of 10A. I also want it to give a bipolar output like -10/30V. I found ...
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I have made the attached circuit, to make a on/off switch for a power circuit. I have made the set and reset pins high. Also shorted the Q' and D. After many trials, still stuck up with the output Q ...
Sainath's user avatar
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Based on my previous question here, as suggested I'm using a push-pull driver circuit to control a MOSFET gate. this is the circuit: And this is a simulation result: Vertical Divisions are 1 V, ...
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