All Questions
Tagged with diy transformer
15 questions
2
votes
2
answers
361
views
Will an isolation transformer have a noticeable effect on mains hum? Also critique my DIY transformer idea
(Uber-edit - it has come to my attention that I am an ignoramus. This post is being left in place not to highlight my stupidity in particular, but to serve as a warning for others who think ...
- 129
0
votes
1
answer
304
views
Three Phase Transformer Design
I design single phase transformers, around 400W - 8000W, but now im lost because i have to design a three phase transformer ( delta - delta connection ).
I searched, trying to find a page that can ...
- 155
0
votes
0
answers
553
views
DIY transformer winding, "Light bulb test"
I "hack" cheap "electronic transformers" for use as filament supply for my tube amplifier projects. They operate at about 50KHz so there is no audible hum (a particularly annoying ...
- 199
0
votes
0
answers
140
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I can't switch on both coils in double arc lighter transformer
I was trying to make DIY plasma lighter (and kind of made it too) but I can't figure out something.
The transformer has 2 primary and 2 secondary coils so I made a NE555 signal generator with 36 kHz ...
- 459
0
votes
2
answers
100
views
I'd like to know if my own version of a cell balancer will do the job
I have two 3.7v cells in series to make a 7.4v battery. I want to make my own active balancer because I don't have access to buying any cell balancers.
I'm using a transformer with 2n turns on the ...
1
vote
4
answers
469
views
Keeping a cheap, DIY transformer safe
I want to design a cheap but safe, low-wattage, always-on heater to keep a small space above freezing. (A small underground tunnel that the water pipe for an automatic horse waterer goes through.)
I'...
- 209
1
vote
0
answers
57
views
Electrical energy transformation
I'm working on a DIY solar inverter.
The goal is to make the battery connected to it rechargable by both energy from solar panels and AC mains (if there is power supply.)
My battery is 24V DC, AC main ...
- 21
5
votes
3
answers
8k
views
How does this circuit in an electric mosquito swatter work?
I had an electric mosquito swatter lying around so I decided to open it up and check out how it works.
I understood some parts of the circuit however I did not clearly understand how the rest of it ...
- 57
0
votes
3
answers
887
views
Is it safe and feasible to use a "damaged" transformer?
I want to make my own DIY spot welder, so I'm trying the instructions I found on several places (for instance, here, here or here) about using an old microwave transformer. I salvaged it from a broken ...
- 117
1
vote
1
answer
206
views
Advice on my Transformer
Background: I need a transformer that can supply 6.3V (+/-1%, as per the heater's specs) and 25 A for a heater.
As a result, I decided to hack a MOT by breaking off the bottom laminations and ...
user154046
2
votes
5
answers
444
views
How to power up 50 LEDs? (DIY 'fireflies' project)
I want to install lots of tiny LEDs lights in my garden (at least 50).
I DON'T want high voltage cables in my garden so I am thinking in getting a high power, low voltage transformer to power up these ...
- 834
2
votes
2
answers
1k
views
transformer windings
I have a 900 watts transformer from a microwave, this used to have a secondary voltage of around 2000 volts (for the magnetron) but I removed it. I wonder if by using 15 turn secondary that will give ...
- 21
-1
votes
3
answers
802
views
Variable low voltage AC supply for heating element
(I'm a begineer in electrical stuff).
My wife needs a transformer for a leather electric creaser.
The transformers sold on the market are ridiculously overpriced (more than 250€). I don't ...
- 11
-1
votes
3
answers
386
views
Need to build a compact power supply that runs off the 240V socket and provides 12V, 5V and 3.3V for an Arduino Project [closed]
I want to have an as-compact-as-possible (but no limit on size) power brick/supply that takes power from a UK Wall socket and has multiple outputs with different voltages. Need 12V@2A for stepper ...
3
votes
3
answers
2k
views
Is my PSU design safe, what should I change?
Normally I would just go and breadboard the design out, but since this is using mains power, I would rather ask experienced people first.
I want to build a desktop 170V DC power supply to fiddle ...
- 403