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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I made a 2n2222 oscilator (the super simple type)
it works with a speaker, but i tried to power a ferrite transformer with it and it seems it stops the oscillation. The transformer has 20t on primary and 310t on secondary, i wanted to use it as a fluorescent lamp instant starter.
I dont get...
I don't know much about opamps.
The idea is to use various opamps in series, with different charateristics according to the input voltage, but with the main goal to increase the peak voltage,let's 5 or more volts, and mostly keep the sine wave frequency of the orginal circuit. Is this possible...
Howdy!
I just joined, and I'm glad to be a part of an electronics repair for like this one.
I'm merely a student just getting started; so the ideas and questions are rambling in my head.
But for now; I'll stick to my issue at hand...
I have a Studio Monitor (M-Audio Audiophile AV 20) that...
How specific of voltage and amperage ratings are required for a replacement? Or what would one recommend for this? The primary and a few secondary windings blew from a voltage surge.
Hi,
Does anyone here knows how to measure the mutual inductance and coupling coefficient for small values inductors? I have succeeded to do that for one common mode choke using an LCR meter, where the L1 and L2 where 4mh, for another choke (where L1 and L2 are 1mH) i have got a coupling...
I'm struggling to keep my mind wrapped around the function of the transformer and, in the process, regretting the days I snooze back in my Electromagnetics class as an EE student when I was a boy:) I'm searching for an abstract explanation, but not just an equivalent one. I want it to be rooted...
I recently got a little casio portable tv, but the lcd controller was fried. I noticed however that the backlight still worked, so I took it apart and found that it was a flourescent backlight. I wanted to use the inverter transformer for some cool projects, however I couldn't find out which...
Hi guys,
I want to know, why I am getting a distorted output from a step-down transformer? Why is it not a proper sine wave? Is it normal?
What may be the problems? Does adding a 100uF capacitor solve this problem?
In case of a smps transformer of 1:2 primary and secondary turn ratio roughly the output voltage will be double & current will be half of input.
My questions are what effect will be on output, if
1) Frequency increase or decrease (when duty % is constant)
2) duty % increase or...
I having a concern about the what kind of current that I have after the MOSFETs (in the transistor bridge) before transformer.
Before the MOSFETS I have a DC current from an AC/DC converter stage. So I am a bit confused if the current before the transformer is average, peak-to-peak or RMS...
The thing is, I was trying to regulate a 220V-9V to 5 volt. I did it though. Everything was right.I was trying to make a dark sensor with NOT gate
()
The settings are good. But it wasn't working fine with the AC to DC adapter.( It is working fine with a battery like the video). The thing is...
So I tried to make an adaptor that can give me voltage around 9-10 Volts. There are total 5 wires as you can see in the attached image.
I am using a 1000 uF(25V) capacitor parallely after the bridge diodes as said. But the capacitor is heating up and I think the lid/head of the capacitor is...
I read many times, form many sources, that 60 VDC or 30 VAC are potentionally dangerous. I know that it is current what matters, but higher voltages lead to greater currents (assuming same resistance, of course).
I also know that primary and secondary windings of a transformer are dangerous.
But...
I want to drive piezoelectric transducer with resonant frequency 110khz and input voltage 70 volts ac with arduino. I generated a square wave of same frequency with arduino than converted it into ac voltage using RC filter than for the step up I used transformer small getting amplitude of 67...
I found a lamp at home which is not working.
I have used the multimeter to detect where the problem was coming from and it seems that the problem is coming from the transformer. It's a 220 to 12 volts transformer and I can read 220 in the input, but nothing in the output. So, something is not...
Hi folks
I found this forum via a Google (is your friend0 search. I found some threads loosely related to my question, but nothing specific. Hopefully, some of you electrical/electronic aficionados may be able to assist.
I have an old 'Transwest' brand Regulated Power Supply in good condition...
Background:
A friend is looking to do some fractal burning (google it) (edit: also called Lichtenberg figure)
and has salvaged a microwave oven transformer (MOT) for this purpose. However he likes to think big and isn't satisfied with the 2kV output so has asked me to look at increasing it.
As...
I have a toroidal transformer which has one input of 220 Volts AC, and 2 secondary outputs of 40 volts AC each one.
I want to modify it to have two 220 volts outputs instead the two 40 volts outputs that it has at the moment.
I would assume that it's a very easy task and I have just to modify...
Generators have to deal with counter torque. The more electrical load placed on the generator, the greater the counter torque. Since the counter torque is a function of load current, if one designed a generator to be low current/high voltage, and in conjunction used a transformer to then convert...
Good Day,
I need help understanding transformer operation, I have been working on a Microwave Oven Transformer conversion commonly found on YouTube and the likes where the secondary coil is replaced with 2 turns of thick gauge wire (50/75mm^2). The idea is that voltage is stepped down and...
Hi,
This is the schematic of a ccfl driver I "reverse engineered" by looking at the board. I am pretty sure the schematic is correct. J2 represents the primary of the transformer. Can anybody help me figure out which pins of the primary correspond to which winding?
Thanks
May not mean anything to non-uk people!
So anyway, looking through eBay listings I keep seeing site transformers (if you don't know, they are used on building sites etc to provide 110v cte power for tools), sometimes very cheap, and keep wondering how easy or hard it would be to take one apart...
https://www.aliexpress.com/item/5v-12v-ZVS-Induction-Heating-Power-Supply-Tesla-Driver-Board-Module-Coil-New/32619428560.html
I know roughly how they work, and i also know that ZVS type circuits exist for flyback transformer drivers, the kind that use TV transformers to generate high voltage, i...
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