Questions tagged [step-up]
The step-up tag has no usage guidance.
186
questions
4
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Zener instead of resistor divider on dc-dc converter feedback pin
This dc-dc converter steps up voltage from 3.1V to 7.5V. I'm curious about the unusual D2 zener + R3 resistor to set the output voltage, instead of the traditional resistor based voltage divider. I ...
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0
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0
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44
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MT3608L based step up power convertor not stable - seems caused by erase cycle of PICKit 4
I'm a hobby home cockpit builder, and making my panels myself. Panels have backlighting, for which I use LED's. To control the LED's, I'm using STP08CP05TTR having 8 constant current outputs. I use ...
- 147
0
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1
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49
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How to conveniently generate variable programming voltages (12V, 12.75V, 14V etc.) in an Arduino context?
I'm playing with EPROM/EEPROM's and I need various voltages. For one, EEPROM I need to be able to generate 5V, 12V and 14V at around 30 mA. Question is how I do that the easiest. I'm thinking I could ...
- 1
0
votes
1
answer
35
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Creating higher voltage from DC motor
I have a DC motor (5 V, 600 rpm). I use it as a generator. It produces near 1.5 V max.
This voltage may differ while using it in the application and I can't control it. I want to raise this voltage to ...
0
votes
1
answer
95
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What is the "best" way to make a diy 7v rechargeable battery?
I have a device (the wii "sensor" bar, basically an IR LED array) that the literature says takes 7v. I can't find any battery offerings that come in 7v, but many that are 3.7v, so I am stuck ...
- 141
0
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2
answers
47
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Step-up like logical "inverse diode" operation [closed]
In the same way that a diode lowers the voltage typically by 0.6V/0.7V, I would like to understand the minimum and simplest circuit to obtain the reverse, i.e. raise the voltage by 0.6V/0.7V compared ...
- 29
0
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3
answers
131
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Design of a 50 Hz step-up mini transformer
I am a first-year B.Tech student majoring in electrical and electronics engineering. Currently, I am working on designing a 500 W mini inverter.
I have addressed all aspects to reduce the inverter's ...
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0
votes
1
answer
116
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Trying to get 5 V using MT3608 (step-up boost) but without success
I designed a circuit to generate 5 V using a 3.7 V battery and an MT3608. The main problem is that I can't get 5 V but just 3.5-3.9 V, even after changing resistors.
I tried everything:
Changing R1 ...
- 3
0
votes
1
answer
40
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Step-up power supply for motor [closed]
I know very little about electricity. I am a private detective. I am converting on older surveillance periscope to modern IP cameras. The periscope has several motors that raise/lower turn 360% and ...
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2
votes
1
answer
92
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Input of 20~23v, need output of 24v [closed]
I have a supply that outputs either 20v or 23v, I need to step that up so it is always a fixed 24v no matter what. How can I make sure it is always a fixed 24v?
Edit: This is for a coin hopper. It ...
- 21
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1
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65
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How does the step up booster in the attached schematic work?
There is a 3 pin SOT-89 package IC DC step up that converts 1.5 V to 3.3 V as shown in the picture.
My questions are:
Does anybody have a link to the datasheet of the 433p?
How does this circuit work?...
- 3
0
votes
1
answer
44
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Combination of step up and step down feasible?
I have a model aircraft on which I am installing a LED kit of the same manufacturer. The EDF jet is powered by a 6s Lipo (22.2V nominal). The LED kit connects to the balancer plug of the battery and ...
- 1
2
votes
2
answers
317
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Step up circuit burns protection diode
I have implemented a step up circuit using an IC. I implemented the component selection from the datasheet. This is its datasheet.
Image source: LCSC - AZ34063U datasheet
The step up feeds an H-...
- 1,369
1
vote
2
answers
138
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Converting a fast-switching 0-2.5V input to TTL signal
Dear fellow engineers,
I am attemping to convert a fast switching (~ns) 0V - 2.5V pulse from FPGA into a TTL-standard (0V - 5V) signal. I have been browsing for voltage regulators online. Most of them ...
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0
votes
1
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63
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XL6009 control with MCU
I want to control some 20-30w led chip with mcu.They need 30-32V so i need step up for that. And thought about that cheap modules with XL6009. Is it possible to control them with PWM on EN pin?
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2
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2
answers
487
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Step Up Circuit does not work
I am using an IC as a step-Up converter in my PCB.
It is supposedly to increase voltage from 12V to 30V.
This is the chip that i used.
https://datasheet.lcsc.com/lcsc/1809251831_Diodes-Incorporated-...
- 1,369
0
votes
1
answer
88
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Power 12V DC Motor with 16.8V (4S Lipo) using PWM control mechanism
I have recently completed a DIY robot that uses 2x 18650 cells (max 8.4V) and a step up module to power four 12V DC motors (Pololu 20d). For my next prototype, I would like to get rid of the step up ...
0
votes
2
answers
130
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Reversing Wye-Delta [closed]
I have edited both the title and the body of this question because my real world example was not being understood as it had a lot going on and I did not do an good enough job of making it concise. Let'...
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0
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0
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87
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How can I get a higher voltage from this boost converter built with an NE555?
I built a boost converter, but it only reaches 130V. I want it to drive a Geiger-Müller tube at about 380V.
Is there any posibility to get that voltage from this circuit?
I changed the coil to a ...
- 1
4
votes
7
answers
1k
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How is current dropped through a step-up transformer, when current is dependent on resistance?
Suppose you have a 1:10 transformer. You put in 12V and you get 120V out the other end. Now the current before the transformer would be
$$V=IR$$
$$I = \frac{V}{R}$$
$$I = \frac{12}{1}$$
$$I=12$$
(...
- 249
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0
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286
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Why use a DRV2700 high-voltage piezo driver in this application?
The DRV2700 from Texas Instruments is an integrated circuit for driving piezoelectric/capacitive loads at relatively high voltages (max. +/-100 V) while the supply voltage can be as low as 3.3 V. This ...
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86
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Why does the step up boost module say its for 3.7V but has an input of 4.5V
I want to use this Step Up Converter (Boost Module), (https://www.amazon.com/gp/product/B0B7JGJ67J/), to power a 12V .15A blower fan using a 3.7V 2500 mAh battery. The step converter says that it is ...
- 1
0
votes
1
answer
97
views
Calculation of step-up / step-down output voltage
I am trying to build a step-up and step-down circuit from a DC-DC converter IC.
This is from the datasheet:
I have two questions in relation to this:
The value of the resistor in the red box. It ...
- 1,369
0
votes
0
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219
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How to drive 5V display with ESP32-C on 3.7V LiPo battery?
I'm using a ESP32C3 board (with integrated battery circuit, the Seeed Studio XIAO ESP32C3), running on a 3.7V LiPo battery. The board is mostly in deep sleep, so it can be battery powered for quite ...
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1
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0
answers
177
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I designed a boost converter based off of a Texas Instruments schematic. Can't figure out why they're shorting out after a while
I designed my first DC to DC boost converter, which was primarily based off of the schematics that Texas Instruments provides for it in the datasheet, and then fine-tuned (applying specific component ...
- 313
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1
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79
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Boost converter output consuming battery - will a blocking diode be of use? [closed]
I'm using a CC/CV boost converter to charge a lithium-ion battery via a USB-C PD circuit.
The issue I am having is the boost converter is consuming power from the battery connected to the output when ...
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0
votes
2
answers
151
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Does the oscillation frequency of my step-up (boost converter DC-DC) depend on the characteristics of my motor?
I have to step up a 4V supply (the generator is a button battery) to a 12V voltage to supply my motor.
How do I size the components of my step-up converter? To compute for example the inductance and ...
- 3
1
vote
1
answer
387
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Converting 0-3.3 V to 0-12 V
My Teensy 3.6 microcontroller outputs an analog 0 V - 3.3 V signal.
I plan to use my Teensy's PWM pin to control the speed of a fan that has 12 V as its 100%.
I wish to convert the 0 - 3.3V --> 0 - ...
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0
answers
67
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How can I increase the output parameter of a boost converter based on tthe MC34063?
I would like to get 16.5V and 160mA output using an MC34063 IC. The circuit is designed on Multisim shown as a picture below. It provides the desired output.
In practice, this circuit has set as ...
- 21
0
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1
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79
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What does the output current depend on in the booster circuit?
What methods are there to increase the output current of the booster circuit?
I got the figure below from a TI LMR62014 step-up voltage regulator datasheet.
Assume Vin = 4 V and Vout = 8 V
In this ...
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