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with your current though....i woudl go for paralleled (interleaved) boost converters.........presumably they are current regulated, so there will not be able to hog the current, as you will regulate the current from each booster.
Hi, very poorly elaborated. What is AC voltage, what is DC voltage, how many phases, current, frequency. Please post some useful information. Klaus
HI all.... I need some help regarding STEP-UP booster IC. i am working on a application where i have to interface SST89E516RD2 and GSM module with Voltage Source from Li-Io batteries voltage range 3v to 4.2V. The battery has a maximum output current of 2.2Amp. My problem is My controller works on 5V for which i am using step up ic TPS61032-5V to
Hello Dear,I am making a motor (AC MOTOR) driving with PIC18F46K22 I have well made the codes for my needs but the problem I now have is the interfacing the IGBT to the PIC,I do have ordinary drive IR21362 but I judged not enough to make on a given IGBT at a good time,so which component/circuit should I use so that before the current reaches the Ga
I've been using regulator circuits like the one attached for years without problem but would like to do the following: (reducing a 12v DC to 9v DC - 1 amp regulator 7809 series) I need 5 x 9v outputs from the same 12vDC supply. I would like to construct 5 (discrete) of the pictured supply. The 12vDC input has the current capability requ
Thank you, it makes more sense when we know what R1 and R2 are! The reason why higher values are suggested in that schematic is simply so that less current is wasted. Some output current flows directly through the resistors to ground so if you use unreasonably low values you sink the current for no reason and just generate heat in them. (...)
THe current for Fans starts at a fairly constant current and then rises slowly to perhaps double the current from 12 to 24V as more work is done pushing air. Typical 4" muffin fans take about 5W and you would get perhaps 20% of the RPM at 12V. Adding resistors would only reduce the fan speed and dissipate more power in the series R's and (...)
The missing info is your wind generator power vs air speed and stall threshold. Then compute time to charge up 4Wh. (1Ah*4V~) vs wind speed. Unless RPM is regulated separately from boost DC-DC regulator for optimum power transfer , expect far less than rated power. Better to use higher voltage gen and Buck current booster with MPPT control Back
Good day. I have only 0.75A but I need 2A. How can I boost my 0.75 to become 2A? Need urgently. Thanks When you have a simple power supply or battery , current is limited by the ratio of voltage over resistance. So if you have insufficient current, the total resistance must be reduced (by proper selection) or the v
This won't happen with a simple DC solenoid. There's apparently some kind of initial current booster built inside your "solenoid". Otherwise the current would increase monotonically after connecting the power. Or there's a problem with your power supply and it's not actually capable of sourcing 5A.
I'm looking to boost a voltage of 3.6V to 9.5V with a maximum current out of 0 to 0.5A for battery powered device. Would like to fine an already built unit if anyone knows of one. Or a working circuit schematic that someone done or knows of a circuit I can use I done a search on Google. But? Wasn't able to fine what I needed. Maybe someon
The relation between driver current, (total) gate capacitance and switching speed applies for single and multiple transistors as well. In addition, you'll probably use individual gate resistors and for large MOSFETs current booster transistors.
Hello I am using Altium designer to simulate a current booster circuit but the program is too slow and even if I make the step bigger still slow the program make the Pc don't respond at all until it finish the simulation any hint or advice is appreciated thanks in advance
That's plain wierd! You have a current limited input rated at 3A max which wastes a lot of current in R5, a voltage booster using a microprocessor that needs an additional supply from somewhere, a 1 Amp / 4V regulator to power an op-amp that consumes 40uA and a 24V shunt regulator which will fry itself if it gets the chance. Add to that (...)
This is a bit of a mess. The OP has started 3 or 4 threads seemingly on the same topic. I answered one of the others here earlier. Apparently he wants to boost the output of an AD620 opamp to drive a current of up to 200mA into a load of 500Ω (or 120
Using coupled inductors seems wrong. Please reconsider. You won't seriously plan to use IRFB4710 100V/75A MOSFETs. The switch transistor must have a certain Vds margin and should have lower Rdson for acceptable on-state losses. You probably want stronger gate drivers than IR2101 respectively use a current booster.
Please specify output voltage range and supply voltage. Some high current OPs can do, but a standard OP with transistor current booster is often better.
Hi. I've been messing around with class AB output stages and their biasing. The first schematic I looked at was this thought it was a great way to bias a class AB stage, but when looking at the output current of the op-amp (which I use as a input stage) as well as the o
FWIW, the LM3909 LED Flasher/Oscillator IC was intended to maximize LED duration from a 1.5V cell (now old but maybe still available out there). One of the app-circuits was for a booster (not a flasher) that drew only 4mA while feeding the LED with short high-current pulses @ 2kHz (constant to the eye). But I'm sure you might have a brightness trad
Better define needed voltage and current consumption, this should be guidance. Try to use Li-Po/Li-Ion and if you need use Voltage booster circuit to get 5V. Best regards, Peter
To get no voltage errors, you'll want to use a feedback amplifier with the current booster inside the feedback loop. Or a power OP with sufficient output current.
Assume A is a standard operational amplifier with e.g. 20 mA maximum output current and compensation current Is is is as high as 200 mA. Then you need a current booster stage like the complementary emitter follower shown in the schematic.
3.7V output... Are you by any chance looking for a way to light a bright white LED, using a single cell? There's an interesting circuit which has become popular under the name 'Joule Thief.' It will take juice from a weak battery and convert it to sufficient voltage/current to light a bright white led. It involves wrapping a tiny ferrite bead
On your original question: Need to increase current of voltage booster You are asking to get 1W approximately for your experiments. So I=W/E? = 1/9x9=.0123 = 13mA (approx). And I do not know what will be your circuit equivalent resistance. Hence the battery volts will drop and instead of boosting the current circuit may not be able
For a resistive load (which is what you are trying to emulate) if the mains goes up briefly then the current to that load goes up briefly too. so it is a good thing if a PFC booster emulates this. It also adds to the stability of the mains network, if the input current went down instantaneously (constant power load) as the mains voltage (...)
Hello! I just registered. I am not specifically electronic trained, but I have some hobbyist notions. I am trying to create an adjustable current regulated power supply. Requirements: Input: 3-4V DC (more specifically, a single LiIon cell, 18650) Output: 3-7V DC @ a maximum of 1.5~2 Amperes. constant current, Adjustable via potentiometer o
Hi friends, I have a relatively high impedance energy source of about 10~12V,4mA which amounts to about 40mW. Can anyone suggest me a high efficiency power supply circuit ( preferably greater than 80%) which can boost the output current to 10mA at the expense of the output voltage reducing to a minimum of 3V preferably regulated. Input power = 7
Hi, i think what you have here is one ic regulator with one transistor current booster circuit. However, the value of your ic is not given. I suggest you deside on what is should be, like say, LM317 and use 'Isis Proteus' to simulate your scematics. Cheers.
Hi all the attached is a booster amp used a gain boosted ota, from one berkeley student's project report. I don't understand why he used cascoded tail current source with one transistor controlled by biasing network and another by cmfb. Any particular advantage of this topology compared to normal cmfb tail current source (two parallel (...)
your question does not make alot of sense. You cannot boost both the voltage and current. For example If your 6V supply is capable of delivering 25AMPS - that is 150 Watts Power = Volts X current if you boost the said voltage to 12V, assuming 100% efficiency! the current available will only be 12.5AMPS. In practice it is (...)
i don't use heat sink.. coz i want it to be small.. if i use 2 7805, then one of the 7805 which drive the seven segments will the hot right? BTW what is current booster..? thx Its better if you use heatsink other wise any time the regulator will burn,, why dont you use 7 segment display from direct supply w
Hello, I have been thinking for a while to come up with a clever solution. I have a mini current source that produces around 0.5V. The output is in the order of ?A. I would like to boost the voltage to 1.6V. Can this be easily done?
Is their any booster IC which gives 5V and 12V output from single Li-Ion cell with current of 250mA from each ouput
Power OPs are basically available. Optimal respectively suitable solution depends on your application. A 741 with a current booster (npn and pnp power transistors) may be a simple solution without depending on special parts.
A darlinton transistor would have alot of current on the output How can i make a tube have alot of current on the output instead of alot of voltage? Mostly tubes preamps boost the voltage from input to output A transisstor boosts the current from input and out But how can i make a tube circuit preamp boost alot of (...)
can anyone tell me what is the best ratio between the current of the booster and that of the main amplifier? is there any paper or books about it please?
Take a look at the attached picture .. It shows the way of boosting the output current of an opamp with NPN and PNP transistors .. Maybe you should try that concept .. BTW> Why do you use LM311??? It is not an opamp - it is a comparator - so, in linear applications it is rather useless .. Regards, IanP
To test dynamic response and line /load regulation. In spice you can do this in several ways.Placing a current source at your output with a time delay is another way.The way I'm doing it here is how I've done it in the school lab. (see attacment) The settings on the VPULSE sources will depend on your particular application. This is a basic li
Increase current in your OTA, use minimum L, most important make sure no doublet in your frequency response UGF of your booster amplifier < 2nd pole of your total amplifier in closed loop configuration
try to lower mosfet input resistance by resistor connected to gate source . Or better to use low output impedance buffer (current booster) before mosfet . But what is the spike parameters - rise time, amplitute and others and type of mosfet you use?
a 400 ohms relay can not be driven by water resistance.waterresistance is above several kilo ohms. so you need to make a circuit like current booster, level sensor or buy a ready-made a controller called "sivi seviye rolesi"....
I need a circuit which can boost voltage and current from a low voltage and maintain it without fluctuations..could someone please help :)
Again, as in current booster1, the vale of the resistor is wrong .. it should be somewhere between 3-10Ω .. In this case current is limited by additional transistor, the 2N6049. It happens when the voltage accross Rsc riches ≈0.65V and this tranistor starts to control Vbe of the power PNP transistor .. Iout≈0.65/Rsc The (...)
This diode protects regulator against discharge of the output capacitor to the output of the regulator in case when the input is shorted .. see picture below .. Voltage regulators such as 78XX have internal current limit that limits the output current to 1A. If you need more current and still have a good voltage regulation you can use (...)
VVV: The regulator is working fine, without the current booster. The problem is, when I connect the current booster the BUT56A became short-circuited between Collector to emitter. Why you say that the BUT56A is not for this kind of application. I need to replace the tip30c for another transistor that can support more than (...)
Jetset The Tip30c and Tip152 form a current booster, in order to permit that the regulator can deliver more than 0.700mA. thanks
All the circuits show Transistor for current boost with 78xx 3 pin regulator. Why don't they use mosfet instead of Transistor.