transformer

Hello, I need help identifying this transformer from a LED driver. 45C389J41 P.S. Why can I almost never find anything online from the markings on these small yellow transformers.

Recently purchased this product: Amazon.com: Aramox High Voltage Generator, AC 220V High Voltage Generator Module Continuous Igniter ≥12kV 1A‑2A : Tools & Home Improvement When I plugged it in it did not work. I opened it up and made the circuit in LTSpice. I don't understand the circuit and...

hi! need you help I Have 3 transformes of 100KVA each 34.5Kv Primary to 120/240V in secondary I have a load of 160 KVA, 3P, 480V, so I need to get 480V in the secondary of my transformers, how can I get tthat voltage, what conextion I have to use delta-wye delta-delta PLEASE HELP ME

Hello, I have a schematic of a flyback power supply that i am trying to design a pcb for. But i couldn't find any part number for the transformer in the attached image.. Can someone teach me how to find the right part number for transformers? Or help me find this particular one with the...

I have treadmill pcb board in that board controller is not working. I found out the problem that transformer inside pcb is not working. Checked the resistance and continuity i found short. I don't know the value of transformer. Nothing is mentioned on it. I have checked in new pcb online. I...

I am constructing a filter unit that is intended to allow visualisation (on a scope) and measurement of high-frequency interference on 240v UK mains by means of a high-pass filter to remove the 50 Hz component. What would be the best (and safest) circuit to isolate the unit from the mains while...

Hello, Can someone please explain how to know which pins are for the primary coil, the flyback coil and the HV ground. I have measured the resistance between all the pins and get either 1.5 or 0.5 ohms and nothing in between. Also, using the method where a 24v supply is connected, I was...

hello everyone. i´m doing a voltage source and i want to get approximately 30V-500mA on Vout with the smallest ripple as possible. : i got a transformer 12 0 12 V and a 1000V 2A bridge rectifier and 4700uf 35V electrolytic capacitor. The thing is: after rectifying it it should give me 24 *...

Hello All, I have an SMPS that i want to change its transformer (image below) in the original transformer, pin 7 is connected to ground and pin 9 to a rectifier diode. with another transformer (image below) Now, the primary of both transformers are similar but the secondary of original...

hello everyone, this is a stupid question but if anyone can answer this, i'd be so grateful. the question is about the transformer core. take a simple EI laminated silicone steel core for example. we know primary winding magnetises and secondary demagnetises. and at a some point an equilibrium...

Hello, I'm an electronics engineering student, currently trying to design a circuit that includes a transformer. I'm using Orcad's Capture (Pspice) software. When I searched "Transformer", this part appeared as 'Generic Transformer', the part name goes by 'PWMXFM'. It has 5 connections, I...

I installed a google nest doorbell and it mostly works. I am having some issues with the external digital chime I setup, so I tried to talk to tech support. However, they are very hard to talk to as they don't really know anything about electricity and how it works. They're just basically...

Hello all, I have the following 12V center-tap transformer with below number of turns, I used (Np/Ns = Vp/Vs) to calculate output but i didn't get 12V although transformer specification says it's 12V. Can someone point out where I have mistaken? Also How can I calculate primary current given...

I am trying to determine what the secondary voltages would be after the following fault occurred. Basically one phase energized two bushings on a delta-wye transformer. I believe it would be something like this but I am not entirely sure.

Hello all, I am designing a 12V, 18W Flyback SMPS and i can't figure exactly the characteristics of high-freq transformer (Both Core, Bobbin) to send for transformer manufacturer!! Can someone already went through these procedures guide me little bit!? Regards,

I am designing a planar transformer in Altium. I am using the planarTX plug-in I found on GitHub which is helping things move along a lot faster - however it only has the capability of creating spirals in a single direction. This means it is not feasible for creation of a series connected...

The project is about designing a transformer that converts 22V AC to 1V AC and connect it to voltage doubler as V_in So here's my schematic and simulation result. I'm having trouble with analyzing the result. The D1N914 diode that is recommended for this project, had Vd,on of about 930mV when...

Hi all, I'm using a 220V - 24V transformer as a supply of 24V AC - 18V DC converter which is my own design. Since I cannot control the output of the transformer I put a crowbar circuit in the DC converter circuit as a precaution for the high voltages and it triggers around 42-43V DC. So the...

Hi! I Have a transformer that has a 0V 185V 220V 255V Marking on the primary side and 7.1V 0 7.1V and a low power 19V unfortunately i dont have a tester to check the transformer's 220v input and i dont wanna just plug it to mains because im pretty sure its gonna cause chaos, pls help! The...