All Questions
Tagged with step-up power-supply
16
questions
3
votes
3
answers
478
views
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 ...
- 85
1
vote
1
answer
80
views
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 ...
- 65
1
vote
1
answer
226
views
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.
...
- 23
0
votes
1
answer
578
views
Voltage control for MT3608 / TP4056
I'm looking for powering up the Raspberry Pi by a few 18650.
It looks like MT3608+TP4056 are somewhat cheap/common way of managing LiPo batteries as a backup power.
I checked the specs and looks like ...
- 117
0
votes
1
answer
305
views
How to make a DC to DC step up with multiple isolated outputs? [closed]
I want to design a DC to DC step converter with multiple isolated outputs.
I need ten outputs (isolated) positive and GND.
Vin: 8 V DC from LiPo battery.
Number of isolated outputs: 10
Vout: 50 V, 10 ...
- 362
1
vote
1
answer
251
views
Power a guitar pedal (usually takes 9V power) with a single AA battery
This is not necessarily for real life application, but more for the challenge: would it be possible to power an existing guitar pedal (let's say a Roland / Boss saturation, fuzz, reverb, delay, etc.) ...
- 1,946
3
votes
1
answer
5k
views
How does such an USB step-up 5V-12V work? [closed]
I just bought a cheap USB 5V to 12V step up converter:
Surprisingly, it works very well. There is few place for electronic components (maybe in the USB connector?), how can we do a 5V to 12V ...
- 1,946
0
votes
1
answer
155
views
Designing a 6V --> 40V step up converter [closed]
I need to design a step up converter with the following requierements:
Vin = 6V - 8.4V
Vout = 35 - 40V, Iout = 2.5A
Could anyone give me some insights on how to ...
- 135
3
votes
2
answers
2k
views
3.7V to 5V step up not providing enough current
I'm trying to power up a circuit that consists of an Arduino Nano, 3x 3W stereo audio amplifiers (PAM8403), an audio player module and 20x RGB LEDs. The power source is a lithium battery 3.7V 500mAh. ...
- 423
0
votes
1
answer
47
views
Switch ON/OFF in MAX1709
I am designing a project where I'm going to use the MAX1709 step-up converter.
There is a possibility to switch the converter ON/OFF with the help of ONA/ONB inputs, but according to schematic in the ...
- 33
0
votes
1
answer
217
views
Can I use a DC-DC step-up module for a small form factor computer? [closed]
I want to design a DC power supply for my Intel NUC small form factor PC using a battery.
The data-sheet for the PC:
...
- 137
0
votes
1
answer
303
views
Chain lithium battery charging board and DC-DC voltage step-up
First I am sorry if it is a duplicate of https://electronics.stackexchange.com/a/151157/207677
I have this two cards:
1 A LITHIUM BATTERY CHARGING BOARD
LM2577 DC-DC VOLTAGE STEP-UP (BOOST) MODULE
...
- 103
0
votes
1
answer
356
views
Specifying parts for Induction Heater; how to determine current requirements at transformer? [closed]
I'm working on specifying parts for the following circuit:
I intend to have a very large work coil, (like 12" diameter) so I'm expecting to need a lot of power. I'm on a tight budget, though, so ...
- 105
0
votes
1
answer
125
views
Step-up (boost) voltage regulator
I recently purchased a step-up converter, the specifications state that it can boost 5 V to 30 V with varying input voltages.
The reason I purchased it was because the charger for my handheld vacuum ...
0
votes
0
answers
2k
views
MOSFET for PSU switching
I want to make a Bench power supply unit based on:
For initial AC to DC conversion - ATX PSU (Enermax EG365AX-VE 350W) capable of providing 12V 26A
Internally Step up module for powering the below - ...
- 125