Questions tagged [step-up]
The step-up tag has no usage guidance.
186
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Formula for current vs duty cycle in step-up pwm circuit?
What is the formula for average current with step-up PWM circuit (and about 30 kHz frequency and 300 uH inductor) that charges battery at 72 volts, and source is 24 volts, relative to duty cycle? I ...
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MC34063 step-up unstable operation
I am building a 3.3V -> 15V/100mA boost converter using MC34063. I have used formulas in the datasheet to calculate values of components. Then I spotted some oscillations in Vout and instability of ...
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How to visualise high voltage and no current at secondary side of step up transformer?
As per the literature I have gone through about voltage, current, impedance, magnetic flux, etc what I understand is that, at the secondary side of a step up transformer, the voltage is very high and ...
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What and how does a step up transformer work that converts a 120V outlet to a 240V outlet?
I've been fixing electronic equipment for some time and I've never dived into what a transformer really is.
In my shop I have a 240V reflow machine that I run for at most 5-10 minutes at a time off of ...
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LMR64010 using externaly adjustable feedback voltage
I am using a basic application circuit for LMR64010. The output voltage is adjustable by changing resistor R2 (R1 is a fixed value of 13.3 kΩ).
I would like to know how to modify this basic circuit to ...
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Can very high voltage and very low current AC produce strong magnetic flux in the coil?
I have done some research and also conducted some experiments and found that the magnetic flux in a transformer or a coil mainly depends on the number of turns and current flowing in it and not the ...
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Step-up converter from 3.7 V to 12 V unable to supply the load
I'm working on a project where I want to supply a magnetic valve powered by two parallel connected Li-ion batteries. Each battery has a voltage of 3.7 V (max. 4.2 V) with a capacity of 3.5 A (in total ...
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Where does the Step-Down Convertor used as compare to RECOM DC/DC converter?
I am reading Step-Down converter and given the circuit below, which is a step down converter. It consists of a MOSFET, inductor, diode, capacitor
And if I compare it with RECOM component DC/DC ...
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9 V to 12 V step-up converter to drive load between 10-100 mA, and no load
I'm working on stepping up the voltage from a 9 V, 150 mA power supply to 12 V, with a load of 10-100 mA and moments where there's no load.
I have implemented something similar with this IC ...
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How do we use step-up transformers to get a very high voltage compared to the initial voltage?
In some medical equipment like CT we find that the voltage entering the equipment is around 380 V, but then it's increased to be around 70 kV to 140 kV.
To increase voltage we use more turns on the ...
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Will I feel a shock using this circuit?
I'm a programmer and new to electronics.
I am trying to achieve at least slightly shocking my finger using this circuit and want to make sure it works before buying the stuff. It will be a punishment ...
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Boost converter not working with any inductor
So I have been trying to design and build a boost converter which steps 5 V up to 12 V. More specifically, the output is to drive a fan which runs on 12 V, 70 mA (nominally).
As could also be seen in ...
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Boost Voltage of Signal Generator Output (via Audio/Signal Transformer?)
Goal:
Have a frequency variable voltage of at least 200 V (more would be great), between 50 Hz and 8 kHz (sine wave, as pure as possible). The voltage is used as open circuit voltage (only drives a ...
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Simple transformer construction help
I’m trying to construct a small transformer to step up the audio of a crystal radio to line level. I can actually hear the radio faintly using a conventional earbud (not piezoelectric), but I’d like ...
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What's the simplest way to produce 150VDC for activating my piezo stack?
I recently bought a piezo stack for research purposes. To activate the piezo stack and get the maximum stroke I have to supply 150VDC.
I want to use the piezo stack in two states only: 0V and 150VDC.
...
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