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453 Threads found on Push Pull
You can use a push button to simulate the door sensor, use the one you have not wired up. You will need a pull up resistor, you can either use a external 10K pull up resistor or enable the internal pull up on Port B. Wiring the processor reset to port RB5 is not what the question meant, wiring the processor reset to RB5 (...)
Wrong. I/O and MISO (SDO) is push-pull output. Can't be connected together to prevent contension.
1. Enable clock for timer 2. Setup the timer as timebase for PWM 3. Enable clock for GPIO and AFIO 4. Set IO as AFIO output push-pull 5. Setup PWM 6. Enable timer 7. Switch on PWM pins Not really simple, but it is STM32))
To understand about saturation effects, we should know the core type and flux in regular operation. A push-pull transformer without any clamping or snubber might drive the MOSFET into avalanche breakdown in regular operation. Inrush current during output capacitor charging will cause respectively higher avalanche energy which might be sufficient
Hello! If i like to give output from controller to input for another one IC means..? It really depends on the type of input and output. If the output is push-pull, then you don't need a resistor to input in the next processor. If it's open drain, you need a pull up. Etc, etc... Dora.
Hi, currently im making an IGBT protection for voltage inverters - by turning off PWM signal in right moment. Now im making PCB and because its my first big project I have some questions: 1. I want to use TLC3702 comparator, they say that it has build in push-pull.. so i dont need any other resistor for it to work (besides current regulations ofc
I opened this new thread because even though this thread is for Three Phase push-pull signals the method is different that is it uses PWM mode. In the other thread it used Half-Bridge mode. Also this is for Three phase Inverter. The other Three Phase thread was for Three Phase AC Induction Motor Drive. I am using PIC18F46K22 with 8 MHz Crystal a
You have not mentioned any topology is specific. By the way, the most common to find in commercial products is the push-pull for relatively low powers, and the full-bridge for above.
So my question is that, can I connect these isolated push-pull converters in series? It depends on how well these two outputs are isolated. At some point in the feedback regulation loop, there is a capacitative coupling. Better to forget the individual regulations of the converters and make sure that the trans
There are many approaches to make bit storage based on loop. For example, the circuit called "bus holder" that used in digital IO can hold a bit value. The circuit is a buffer with weak driver, with input and output connected. And strong driver with Hi-Z ability. To load data strong driver push or pull, to store data strong driver in Hi-Z. Or lat
Hello Everyone. I am gonna design a push-pull dc dc converter converting 48V to 330Vdc based on the Tahmid's blog as below. 132927 My questions are: 1) Do I have to use isolation in the feedback, for example through opto-couplers, to isolate the higher voltage secondary side from the primary side? Or will the above cir
The LT1533 should work fine from a 12V input, but its 1A current limit means 5V won't provide enough power. There are certainly many other off the shelf SMPS transformers you could use instead of the one in the reference design. But it's likely not necessary to use a specialty part like the LT1533. A push pull converter with proper snubbers, layou
p.s. full bridge drive will work a lot better at this power level... rather than push pull... also gives you more effective Cu on the Tx Yes indeed, but he is specifically wanting push pull, presumably because its low voltage and VERY high current at 3KW. That needs to be taken into account and presents some rather nasty (...)
Hi all, I'm using ADXL375 accelerometer sensor connected to STM32F103 microcontroller. I wanna enable the interrupt pin of sensor and connect it to one of input pins of microcontroller in sensor datasheet it is said that interrupt pin is push pull active high. now, the Question is that How should I configure the input pin of microcontroll
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
It appears you are not producing a sine wave but driving some kind of square wave to the MOSFETS. I assume you are using a center-tapped iron cored output transformer with some DC votage applied at the center and the MOSFETS go to the ends of the windings. If I'm right, you have three electrolytic capacitors across each sid
Presume "push-pull" refers to transformer push-pull (half- or full-bridge is push-pull as well). Usually leakage inductance spikes are absorbed by dissipative snubbers, e.g. RCD or diode + Z-diode combination. Use interleaved primary windings to make the leakage inductance between both (...)
Once again, there are 3 possible logic types are used: 1. push-pull 2. open collector/open emitter 3. tri-state You have to use second one. You will use LAT register to latch zero value, then switching the TRIS register you will be able to change between two pin states: 1. Forced low by low side mosfet 2. Released tri-state pushed hi (...)
Thank you for the reply. During the test we tried to increase and decrease the bias voltage. since we decrease the voltage it comes back to the stable state. It seems it works in on mode by reducing the bias voltage. Thank you ahsoopk, Actually this board is the test board of the transistor. And I think they have already c
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 errors
I wonder what's the purpose of L1 at all? Another likely problem is overvoltage in transformer push-pull stage caused by leakage inductance. Will need snubbers or clamping circuit, in any case it results in poor efficiency. Finally I'm not sure if you achieve sufficient H-bridge dead time with transistor logic circuit formed by Q2 to Q5. Coul
Hi, I am new to power electronics, this a push pull current fed converter.There is some part I do not understand, please help!!!!! 128773 Let's consider there is no series resistance on inductors and capacitors. 1 of the switch is turning on and another one is turning off, both duty cycle is 50% and frequency of 100kHz.
I doubt that many 50 Hz transformer inverter are linear in any regard. They are usually implemented as simple 50 Hz push-pull switch with square wave output
Did you notice that the Supertex application note implements a push-pull driver which is necessary to drive an actual square wave to the piezo tranducer? Your circuit can only generate a single exponential discharge pulse. It may be appropriate for your application, but looks at least unusual compared to typical piezo applications. Did you consider
A common drain Mosfet is a source-follower. It has no voltage gain and is extremely difficult to bias because if you make it push-pull the N-channel needs a fairly high input voltage and the P-channel needs a fairly low input voltage. A CD4007 or a CD4069 cannot be made to do what you want and if you use separate Mosfets it will be very difficult.
Dear forum reader, A while ago I have posted and question about a 500Watt DCDC inverter and thanks for your reactions. A friend of mine had a module like this and we have tested it. Conclusion don't buy it ours blew up after 200watt. In the meantime I have simulated a similar design in multisi
Yes, isolated DC/DC is comprised of switching stage (e.g. transformer push-pull or H-bridge), high-frequency transformer, rectifier and filter. Switcher can be either unregulated or regulated.
Hi all, How do you estimate or calculate the peak output power that a 500 W transformer in a push pull inverter can supply. 126649 Thanks
Hello everyone, Does a push pull converter need an output inductor?? This schematics have no output inductor... 126626 126627 What is the output delta I (ripple current ) when there is no output inductor?? Thanks
I am looking for a good quality transformer manufacturer in China. I need to manufacture dc-dc boost toroid (12V to 40V push pull) transformer for commercial use. My present manufacturer didn't satisfy me as there is lot of leakage inductance which is causing trouble. Does anybody know any quality company in China as my production will be China
How interleaving winding is done in toroidal push pull transformer ? You could wind twined at least part of the coils which have the same length, although this way could lose some dielectric strength.
Hi A 3.3V PWM input is stepped up to 12V using a BJT. The BJT has a speed up capacitor of 50pF. The output from the BJT is fed to an inverted push-pull stage. (Inverted as in the P MOSFET is at the bottom and N at the top) 125923 The problem is that soon after the BJT switches ON, it immediately switches OFF for a few n
How i generate push pull pwm by using CCP1 CCP2? Here is my code : ***Pic16F73 using MikroC****** short duty1=0; short duty2=0; void main() { duty1 = 50; // initial value for current_duty_1 duty2 = 50; TRISC = 0x00; // PORTC as output PWM1_Init(50000); // Initialize PWM1 PWM2_Init(50000); // Initialize PWM2
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 common American transistors, not your orienta
Hi Guys, Bit of a long shot with the amount of information I can give but just asking in case anyone else had had similar issues I have a push-pull design that is taking 60V and stepping it up to 360V at 360KHz, Now my issue is when I power the board at start up the board makes a bit of a noise then runs fine. Ive tried playing around with th
all resumes on how do you detect masters collision? if you use a open collector schema, you can detect collision when you try to send a 1 (open drain an 1 from the pull up) and read a 0 ( the other master is sending the line to 0) if you use a direct push-pull, the collision itself could burn the output of any or both masters. you can try (...)
What is the kind of circuit that drives the opto, open-collector, push-pull, etc ...? By the way, you are right regarding to the path of the power, for some obscure reason I was mistaken in the analysis done earlier. Just to check: Could you confirm if the Varistor is not getting hot ?
I am looking for a diode components, can I used this diode for my rectifier? And for the capacitor, which capacitor type is best used for push-pull filter application? do you think an electrolytic is good to use?
There is no law saying that lower L(mag) pulse transformers suffer more droop than higher L(mag) pulse transformers. It depends. In your example, all cases have the same driver impedance (10 ohm + push/pull output impedance), in this situation the lowest Lh will of course involve the highest droop. You shouldn't make a thing out of
It means that I should use mosfet push pull driver based on P and N channel transistors? Could you see link
That comparator does appear to have a push-pull output. You need a new plan. ;-) You can't connect the comparator common to the ground that you are disconnecting from the battery negative terminal. If you want the battery to power the comparators then you need to connect pin 4 directly to the negative terminal of the battery.
At about the end of this page there is a linear that I have tested and works well for 40m HF band. I have also made this little broadband linear in the past I was wondering how can I make the first c
I have tried to design a Class AB push-pull source follower. Attached the schematic and its transient analysis. Input is 0-3V AC. The output waveform expected is 0-40V AC. But I am not getting the proper output waveform. and it is clipped at the lower end. Please suggest me how can I improve the response of my circuit.
Hello Mr. Klaus, Thanks for your reply. My program is for LED blinking by push button.. Please tell me where the mistake in program ??
use complementary push pull output driver in comparator rather than open collector and lowest impedance match for lowest latency and overshoot. What specs?
Doesn't matter what micro controller we are speaking about. It is true. Output stage is always latched and can be readed. In case of short circuit output 1 will be readed as 0. Enabling pin to output means just hold one of two push-pull transistor opened. Also, pull-up and pull-down combination can be specified as a (...)
Hello! First, open a browser and type "push pull wiki". You will have a list of push pull definitions. You can choose push pull output and you get a better definition with images than we could do here. Same method with "open drain wiki". Open collector is the same with bipolar transistors. (...)
An open drain is the drain of a Mosfet that has an external load. Then more than one Mosfet drain can be connected to a single load. If all Mosfets are turned off then one Mosfet can control the load. A push-pull output has two transistors, one of them pushes low and the other one pulls high. If you connect two or more (...)
The reason for the 50% duty limitatation in a 3525 is because it was designed for push-pull or bridge stages. Two nonoverlapping outputs are required in those topologies. The method that warpspeed recommends combines the two outputs to a single output. Is that what you want? Or do you want both outputs to go above 50%?