All Questions
Tagged with step-up transformer
26
questions
0
votes
3
answers
131
views
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 ...
- 1
0
votes
2
answers
130
views
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'...
- 1
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
1
answer
114
views
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 ...
- 375
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
1
vote
3
answers
285
views
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 ...
- 19
0
votes
3
answers
149
views
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 ...
- 235
1
vote
4
answers
401
views
Power transformer circuit using H-bridge doesn't work as expected
I am trying to step up my AA battery's voltage (which is 8 volts in total) using an ignition coil (which is rated for 12 volts input.)
To drive the coil I am using an H-bridge at a frequency of 50 kHz ...
- 71
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
2
votes
1
answer
196
views
Choosing a transformer for 120V->240V AC step-up for low current (<1 W)?
I've got a device (microcontroller-based energy monitor, https://shelly.cloud/knowledge-base/devices/shelly-em/) which I'm using to measure energy consumption of 240V split-phase devices (motors). ...
- 121
1
vote
1
answer
577
views
3-phase star transformer connection with no neutral for wind turbine
I built a wind turbine a while back and have been using it to power lights in my house. It gives out 3-phase in star setup with no neutral. Neutral is buried in epoxy resin in the casting.
It feeds ...
- 23
0
votes
2
answers
1k
views
Using 220-240V 50/60HZ appliance in US - transformer or wiring/combining of two separate phases?
I have an appliance rated to be working in 220V-240V, 50/60HZ. The typical power draw is 1000W, max - 1500W.
For the 240V environment where it is now, the typical/max current draw is less than 5/7A.
...
- 103
0
votes
3
answers
733
views
Can anyone help with an Ultrasonic Transducer Transformer design. Air gap or no?
I am looking at using a centre tap transformer with a 12mH secondary to drive a 50W 40kHz ultrasonic transducer (4100pF 10-20Ohm resonance impedance) for cleaning applications.
The input voltage is ...
- 13
-1
votes
1
answer
165
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Which voltage converter will work for my amplifier? [closed]
I recently moved to France from the United States. I am in the market for a voltage converter for my markbass amplifier:
From the little research I have done, there seems to be a general consensus ...
