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Technodigital Designs
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PCB's & Microcontrollers
PCB's & Microcontrollers

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This is the 12V/700VA Sinewave Inverter cum UPS. Switching frequency is 6.41KHz. It is working very nicely...

http://technodigital.in/products/sinewave
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The first thing to know about PCB design is what measurement units are used and their common terminologies, as they can be awfully confusing! As any long time PCB designer will tell you, you should always use imperial units (i.e. inches) when designing PCBs. This isn’t just for the sake of nostalgia, although that is a major reason! The majority of electronic components were (and still are) manufactured with imperial pin spacing. So this is no time to get stubborn and refuse to use anything but metric units; metric will make laying out of your board a lot harder and a lot messier. If you are young enough to have been raised in the metric age then you had better start learning what inches are all about and how to convert them. An old saying for PCB design is “thou shall use thous”. A tad confusing until you know, what a “thou” is? A “thou” is 1/1000th of an inch,and is universally used and recognized by PCB designers and manufacturers everywhere.So start practicing speaking in terms of “10 thou spacing” and “25 thou grid”,you’ll sound like a professional in no time! Now that you understand what a thou is, we’ll throw another spanner in the works with the term “mil” (or “mils”). 1 “mil” is the same as 1 thou, and is NOT to be confused with the millimeter (mm), which is often spoken the same as “mil”. The term “mil” comes from 1 thou being equal to 1 mili inch. As a general rule avoid the use of “mil” and stick to “thou”, it’s less confusing when trying to explain PCB dimensions to those metricated non-PCB people.

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The new sinewave inverter PCB circuit which has been tested & working fine.
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Automatic Voltage Stabilizer with wide range input 140V - 293V, check the site for more details...
Check this 2Relay/3Step 140V - 293V Automatic Voltage Stabilizer built around with PIC 16F72 & SyncMOS SM894051...

Hello to everyone, I have changed the name of my page to my business firm name so please don't be confused with it. I am Ashok Adhikari but I post on behalf of my business firm. If anyone want to contact me personally, should post to Ashok Adhikari.

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Cheap and excellent replacement for costly inverters...
Added the description and working principle of CFL based inverter...

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great insight about sinewave inverter building...
I have added sinewave inverter building tutorial, take a look at it...

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excellent description...

We are introducing PIC microcontroller programming in Assembly & C language and PCB layout designing course.
Currently operating in Delhi only, anyone interested may contact us...
training@technodigital.in
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