How to rig multiple IR2103 to form an H-bridge to excite transformer

  • Thread starter Thread starter checkmatescott
  • Start date Start date
  • Tags Tags
    Arduino
Click For Summary

Discussion Overview

The discussion revolves around the design of an H-bridge circuit using IR2103 half-bridges to generate a 55V AC signal at 50Hz for exciting a transformer. The participants explore the technical aspects of the circuit design, safety concerns, and alternative solutions.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant seeks guidance on creating an H-bridge setup to reverse polarity at 50Hz using IR2103 and Arduino.
  • Concerns are raised about the dangers of working with high voltages, with one participant emphasizing the need for proper training and understanding of the manufacturer's datasheet.
  • Another participant expresses frustration over perceived reluctance to share knowledge, asking for clarification on specific terms like "UV" and "dead time."
  • There is a suggestion to simulate the circuit using LTspice to better understand its operation.
  • A participant questions the feasibility of the transformer design, suggesting that the turns ratio may lead to excessive resistance.
  • One participant proposes the idea of purchasing an inverter that can handle a 55V input as an alternative solution.
  • Another participant emphasizes the importance of knowing the current draw from the 55V supply before proceeding with the design or purchase of an inverter.
  • Discussion includes practical measurements and checks that the original poster plans to conduct to ensure safe operation of the circuit.

Areas of Agreement / Disagreement

Participants express differing views on safety and the ability of the original poster to handle the project. While some emphasize caution and the need for experience, others focus on technical details and potential solutions. The discussion remains unresolved regarding the best approach to take.

Contextual Notes

Participants highlight the need for a clear understanding of electrical safety and the implications of working with high voltages. There are references to previous discussions being paused, indicating ongoing concerns about the original poster's approach.

checkmatescott
Messages
80
Reaction score
2
TL;DR
I need to know how to ocsillate the current between +55v and reverse. I have been advised to use multiple IR2103 half bridge drivers in conjunction with an arduino and 4 digital pins need the guidence to setup this circuit. Can anybody help. The more help I get the easier it is to understand the manual!
I am designing a machine that puts out constant ,and I want to put it through an H-bridge style setup to reverse the polarity at 50hz, by utilising IR2103 half-bridge's and arduino. after hat the 55v at 50hz will excite a transformer with turn ration 4.182 to achieve approximately 230v ac. thanks for any help in advance!
 
Engineering news on Phys.org
230 volts is a high and lethal voltage. If you cannot read and understand the manufacturer's datasheet, then you lack the experience and training necessary to safely implement the circuit.
 
  • Like
Likes   Reactions: DaveE
Well then talk me through It, its not like im going to hold some guy on the internet accountable, for some help and advice he gave me. I just want to know how to oscillate 55v at 50hz! its for my project and btw i wear rubber gloves
 
At the end of the day its a chip with 8 pins surely it cant be that hard to explain the operation. treat explaining to me as a challenge and don't think about the ethics ie "its too high of a voltage for him to handle or understand, it could be dangerous"
 
For any help, I would be forever in your debt and will appreciate it a lot.
 
Unless it's too difficult for you to explain.
 
checkmatescott said:
... its not like im going to hold some guy on the internet accountable, ...
This website has rules, against dangerous activities, to protect this website.

I am not prepared to assist you in your attempt at gaining a Darwin Award.

Go to college and study. Train to qualify as an electrician or an engineer.

Find out why your other thread was paused.
 
The part I need comes before the transformer and is therefore not dangerous
 
I can see that you don't want to part with your knowledge. I understand the not gates and nor gates I don't know what UV means and I don't know what dead time means. I understand the pulse generation and how it works, I understand the internal transistors and I understand the pulse filter, so there's a lot I do get. I just need some help I have a gcse in electronics and a level 3 diploma in electrical and mechanical engineering. and ok another approach can you tell me where I can get the information I need that explains how to get the desired ac at 50hz 50% duty cycle
 

Attachments

  • IR2103 FBD.jpg
    IR2103 FBD.jpg
    34.3 KB · Views: 127
Last edited:
  • #10
checkmatescott said:
The part I need comes before the transformer and is therefore not dangerous
One thing leads to another.

You are clearly inexperienced, and are not in a position to assess the danger.
https://en.wikipedia.org/wiki/Dunning–Kruger_effect

Why do you not simulate the circuit with LTspice?

A transformer with a turns-ratio of 4.182 would have too many turns and too much resistance. 500 : 2091 = 4.182
 
  • #11
alternating 55v on a coil with 1:4.182 the output will be around 230v i need 55v ac 50hz 50% duty cycle. ok I will attempt to use LTSpice but i need the
 
  • #12
because 55 * 4.182 = 230.01
 
  • #13
ok so another approach can i just BUY an inverter that takes an input of 55v?
 
  • #14
There is still an elephant in the room.

How much current can you draw from the 55 volt supply before the voltage falls below 50 volts?

You need to know that before designing or buying an inverter.
 
  • #15
ok I next go to work on it for 2 hours on friday. I have two meters, my four coils are connected to a 10 diode bridge similar to this. I still need to do that check, I will be using two multi meters at the same time one measuring votage accross the output, and the other in-line with a power resistor of 27 ohm 100w to give current reading and I do realise that if I dont want to blow the power resistor i can only run it up to 50v because 50/27=1.185185 and then for power multiply current by voltage eg 1.185185*50 which equals to 92.approximatly, I think max I can do it 52v, but in reality when I tested for current, I was getting up to 70 amps, so yeah I need to the voltage check on one multimeter and current showing on the other at the same time, cheers
 

Attachments

  • 10 diode bridge.jpg
    10 diode bridge.jpg
    15.4 KB · Views: 120
Last edited:
  • #16
and ok say i find this time that the voltage drops from 55 to 50, then what procedure do I do to choose something adequit ? method?
 
  • #17
Baluncore said:
Find out why your other thread was paused.
@checkmatescott -- It is against the PF rules to try to reopen a locked thread. This thread here is also on pause. I will answer your PM about the first thread later today.
 
  • #18
berkeman said:
@checkmatescott -- It is against the PF rules to try to reopen a locked thread. This thread here is also on pause. I will answer your PM about the first thread later today.
After a long PM conversation, the OP will not be returning to PF. I mention why at the end of his original thread on these questions. Have a nice day.
 
  • Like
Likes   Reactions: Bystander