All Questions
9
questions
4
votes
7
answers
1k
views
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
1
vote
1
answer
97
views
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 ...
- 73
0
votes
3
answers
249
views
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 ...
- 73
0
votes
2
answers
100
views
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 ...
0
votes
0
answers
176
views
Should I use one thick wire or many thin wires in a step-up high frequency transformer to reduce resistance and impedance?
I am planning to make a step up high frequency (hundreds of kHz) transformer. I want to reduce the resistance and impedance in the secondary. Should I use one thick wire in the secondary, or should I ...
- 73
1
vote
2
answers
257
views
3.7V to 7.5V step up circuit
I need a circuit which can step up the voltage from my 3.7V Li Ion battery to 7.5V.
The current requirements are pretty small (up to 50mA max), but I have a latching solenoid which requires a short 7....
- 37
0
votes
1
answer
437
views
Will my step-up converter module break if I connect a power hungry device to it?
I recently bought a step-up converter module. It is rated to work at 24 volts and output MAX 28 volts and 2 amps. I will connect it to a source that outputs 5 volts and 20 amps. If I connect a power ...
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
2
answers
286
views
Do I need to restrict current to charge a dyson Li-ion battery directly with my photovoltaic system
I would like to charge my Li-ion battery from Dyson V6 vacuum cleaner with my solar system/controller (12V output voltage) with a step up converter 26.1V/3A. I already charge my apple computers and ...
- 103