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 on: May 25, 2020, 04:45:12 04:45 
Started by Breixo - Last post by Breixo
Dear Mr. pickit2, I use Proteus as one of my thousand and one hobbies, my son, today a 40-years-old, 5-years degree Electrical Engineer, has a great background in Electronics, which is quite unusual in Spain in the "Electrical" specialty, thanks to Proteus and my multiple theoretical applications. My 12-year-old grandson, without even knowing what his future will be, begins to take an interest in Proteus, all thanks to people like you.

Mr. pickit2, I am sure that a whole community of Proteus fans will thank you infinitely for your time and your attention, as well as those of others like Mr. Nemo78, to providing us, in a completely altruistic way, with a powerful means such as Proteus, particularly old hobbyists, as in my case, to play Electronics without wasting time soldering and desoldering.

That being said, instead of muting me, reporting me to the moderator, and treating me with little regard, a simple "Run the first time as 'Administrator'" would have been enough, moreover, if "This error has been fixed many times" and there is still anyone who has not noticed (Icn neither) is because some information has been missing:

- No need license.
- No need patch.
- Run the first time as 'Administrator'

it would have been enough.

Anyway, once again, thank you for your time and attention and I thank you for taking pity on this old man. Best regards.

P.S.:Note: We do not do Child Care Here.There are kindergartens in your Local Area makes you look like an old curmudgeon. Wink

 on: May 24, 2020, 03:31:15 15:31 
Started by pushycat - Last post by pushycat
DIY Smart Switch box (EFY Feb 2018)
Most of us leave our battery operated devices like mobile phones,  laptops,  tablets, power  banks  and  modems  plugged into a charger overnight even though these devices, especially smartphones with quick-charge option, take about two hours or less to fully charge. After the device is fully charged, the charger remains idle for more than five hours (say, from 1am to 6am). Since we usually donít access the Internet at night, modems too are just idling during this time, consuming some power. Here  we  describe  a  power  saver circuit for mobile chargers and modems. It is a simple op-amp-based multipurpose  circuit that provides individual delays for your devices. After a specific amount of  time,  it  automatically turns the devices off.  This  saves power wastage  during  idle time  while  increasing the  operating  life-time of devices.

Links are exclusively for Sonsivri members. Thus links are uploaded as attachment. Please do not share links in open forum

 on: May 24, 2020, 08:30:19 08:30 
Started by pickit2 - Last post by pickit2

 on: May 23, 2020, 08:49:56 20:49 
Started by sbx7799 - Last post by sbx7799
NoteHello everyone,
Today only I came to know about Sonsivri , should have been here earlier.
I am just an electronics enthusiast without formal education. 
Google is good but when it comes to serious information its not available.
For example last few days I have been trying to setup an rs485 communication system and google was not so helpful.
I would like to learn and contribute from here.
Information should be free.

 on: May 23, 2020, 01:45:13 13:45 
Started by Donatello - Last post by Donatello
NoteI am an electronic engineer (15 year of the experience) and I like to share opinions or open source projects.
Iot, industrial and home automation, firmware

 on: May 23, 2020, 01:39:44 13:39 
Started by crt0s - Last post by pickit2
NoteI'm a linux and embedded systems developer for many years. Very deep knowledge of linux kernel, rtos, drivers compilers, debuggers. Highly interested in electronics and small devices for  IOT for fun and hobby.
so all this and zero postings? take a holiday for the time in forum.
 1,460 days should do it for me.

 on: May 23, 2020, 01:01:25 01:01 
Started by Captain_Boblo - Last post by Vineyards
In what part of the circuit do you have the darkened area? If it is close to the dry contact side of the relay where the igniter filament is switched off and on then it might be due to occasional spikes in the current due to the sticking contactors of the relay or due to the degradation of the filament. Depending on its design an igniter can consume up to 700-800 watts of energy and most designers would use a relay that can handle several times more power making a compromise between cost and unit life.  There is a concept called inrush current stabilization which can take anywhere between a few miliseconds to a couple of minutes where the current can temporarily stay up to 20 times higher than the rated value and slowly stabilizes back to the normal level. During this period all the components including the relay contacts,  the copper lines and the solder points on the PCB and everything in the way is exposed to an enormous stress.

Actually, you can't blame the design all that much  because the board has lasted 20 years. The only solution to make it last longer would be redesigning the whole board for wider stress margins including larger PCB lines, brazing the critical parts rather than soldering, a larger relay unit preferably of a easily replaceable type etc.

Maybe you can solder the parts using a large solder pot but that requires a lot of manual dexterity as well as quite a few pieces of equipment and would certainly be an overkill for a single unit. Plus you would still need to hard solder certain points.

 on: May 22, 2020, 05:45:53 17:45 
Started by Captain_Boblo - Last post by Captain_Boblo
All very good advice, thank you all! 

I didn't replace any components, just metered the resistors and checked against the color codes, and checked the diodes and removed and checked the triac that drives the pulse transformer (for the ignition). 

There are two non-sealed DPDT relays on the board, so I was trying to avoid using the hot air gun (risk of flux getting in), but that is certainly a good option to save time if I had better flux applicator skills Smiley
Thanks again. 

 on: May 22, 2020, 01:50:54 13:50 
Started by Captain_Boblo - Last post by mars01
Since everybody is pitching in, I will just throw my 2 cents Smiley
It is well known that a slight increase in temperature will dramatically decrease the component life. Also, while some components (like resistors) are artificially aged before are sold, they still change values in time and the culprit is also the raised temperature.
Therefore I would also act preventive and try to lower the ambient temperature. Perhaps adding an air flow (cooler) will improve things. Also check for wiring impeding the current airflow.

 on: May 22, 2020, 06:53:56 06:53 
Started by Buddace - Last post by Catcatcat
You have a CHARGE TIME MEASUREMENT UNIT (CTMU) module on the PIC18F26K22 that is designed to change nanosecond intervals, use it.

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