All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > General Electronics Chat


General Electronics Chat Discussion forum for general chat about anything electronics related, including asking questions about material in the All About Circuits E-book, Worksheets, and Videos.

Reply   Post New Thread
Thread Tools Display Modes
Old 05-29-2011, 07:30 AM
dany dany is offline
New Member
Join Date: May 2011
Posts: 1
Default 556 dual timer 12 volts to 110 or 220 volt inverter

Hello everyone,
This is a 556 dual timer 12 volts to 220 volts 50hz 50% duty cycle inverter circuit.It is capable of outputting 500-600 watts at 190 to 200 volts output.... (you should heatsink the MOSFETS)....
Attached Images
File Type: jpg 12 volt to 110 220 volt inverter.jpg (175.9 KB, 36 views)
Reply With Quote
Old 11-21-2011, 03:56 PM
Bill_Marsden's Avatar
Bill_Marsden Bill_Marsden is offline
Super Moderator
Join Date: Mar 2008
Location: Dallas, TX (GMT-5 w/ DST)
Posts: 19,070
Blog Entries: 5

Please read the rules of the Completed Projects forum.

When posting a project please include the following information:

1. A clear title that describes the project appended by the word 'Project:', for example "Project: 555 Audio Oscillator".
2. A list of parts, equipment, software used.
3. Details of any theory, references or information that may be applicable.
4. Any schematics, source code, etc.
5. A short description of what to do.
6. In the interests of manageability and security, project files/code/schematics must be locally stored. Links may be used to provide supplementary information, however they must not provide the substance of the project.
This project has sat in limbo basically because it didn't meet the above requirements. If you want to resubmit this entry please rework the entry to meet the requirements, then drop one of the moderators a PM pointing to it. If it is acceptable a moderator can move it back to the Completed Projects forum and clean up notices and suggestions (making them invisible).
"Good enough is enemy of the best." An old engineering saying, Author unknown.

General info:
If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input. Thanks for the verbage Wookie.
Reply With Quote
Old 11-21-2011, 05:46 PM
SgtWookie's Avatar
SgtWookie SgtWookie is offline
Expert Member
Join Date: Jul 2007
Location: In the vast midwest of the USA; CST
Posts: 22,043

1) The circuit as presented is not functional, as once the MOSFETs turned ON, the circuit would never turn them off; there is no current path to discharge the MOSFETs.
2) The duty cycle is NOT 50%, as with the standard 555 timer astable multivibrator scheme you have used, the ON time is always greater than the OFF time.
3) You have specified resistors that are not standard values for R1 and R2, and even if they were standard values, there are no provisions to calibrate the output frequency.

This is obviously a circuit that was simply simulated, and not tested - although I don't see how it would work in a simulator either.
General info:
If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input.
Reply With Quote
Old 11-21-2011, 08:42 PM
Audioguru Audioguru is offline
Join Date: Dec 2007
Location: Ontario, Canada
Posts: 9,411

Many electronic products do not work from its square-wave output.
Its output voltage is not regulated so it will be too high with a light load and be too low with a heavy load.

It does not sense when the battery is exhausted so the battery will keep powering it until the battery is destroyed.

It doesn't have a fuse or circuit breaker in case of overload so it and/or the battery will simply explode or catch on fire.
Reply With Quote
Old 11-22-2011, 12:17 AM
thatoneguy's Avatar
thatoneguy thatoneguy is offline
Senior Member
Join Date: Feb 2009
Location: Midwest USA
Posts: 6,356
Blog Entries: 4

I'd suggest deleting the thread before another bad inverter circuit is foisted onto the already huge pile all around the web.

OP: Start a thread and we can try to help with the deficiencies of this one, though I'm not sure where to start.
Reply With Quote
Old 11-22-2011, 12:22 AM
bountyhunter bountyhunter is offline
Senior Member
Join Date: Sep 2009
Posts: 2,498

Or start a thread for the projects voted most likely to electrocute somebody...
Reply With Quote
Reply   Post New Thread

, , , , , , ,

Related Site Pages
Section Title
Worksheet Performance-based assessments for analog integrated circuit competencies
Worksheet Power conversion circuits
Worksheet Bipolar transistor biasing circuits
Worksheet Bipolar junction transistors as switches
Worksheet Peak, average, and RMS measurements
Worksheet Energy, Work, and Power
Textbook The 555 IC : 555 Timer Circuits
Textbook 3-bit binary counter : Digital Integrated Circuits
Textbook Class B audio amplifier : Analog Integrated Circuits
Textbook Digital signals and gates : Logic Gates

Similar Threads
Thread Thread Starter Forum Replies Last Post
applying 480 volts to a 440 volt transformer trognholt General Electronics Chat 7 05-22-2009 05:54 AM
6 Volt Power Supply from 12 volts (car battery) fuadramsey The Projects Forum 11 08-05-2008 10:31 AM
capacitor discharge voltage help Sean Reed Homework Help 16 03-01-2008 05:19 AM
10.84 Volts to 1 volt or .90 volts Bcog General Electronics Chat 3 01-22-2008 03:21 AM
Isolation transformer Silva General Electronics Chat 12 05-05-2007 02:36 PM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 01:04 PM.

User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.