erosennin said:
Keep in mind that power dissipation isn't linear... i.e. it wont be 0.69W for 30mA.
The calculation was based for a 110Vrms/60 Hz.Putting a value of 230Vrms/50 Hz with the same R & C values,I get 22mA@0.542W.I can increase the current to 33mA with a sacrifice of output voltage(5.1Vdc),that it drops to around 4.5V,but thats okay since my microcontroller operates from 1.8V and so do the other peripherals.And Power Dissipation comes to be 0.67W.So its a bit up than my limit of 0.5W,this seems explainable/acceptable at the moment-to me as well as my client.
erosennin said:
What boncuk suggested will also work but will end up rising in cost
So I guessed after looking at the app note of TEA152X-family.So this cant work
Torben said:
You haven't stated what the available input voltage and current is. Is this thing supposed to run from the mains, or from a low-voltage supply?
Sorry for not providing that earlier.
Vin=230Vrms@50Hz
This is supposed to run from Mains(230V).
I am not allowed to use a transformer.So I have to generate the 5Vdc for all my devices.
Torben said:
Also, how many of these do you need to build? Is this something which will be manufactured, or are you just doing a one-off for a client?
There will be a big volume manufacturing done by the client,so the effort!
mvs sarma said:
The Triac will need a Heat sink. These things will cost little over a relay cost.
If I were to use a BTA12600 which costs quite low,it wont need a heatsink.Since the load to be switched is <4A@230V.Yes this Opto+TRIAC costs little over a relay,but again I may not have a choice since using a relay will need a sturdy PS and that eats money.So this may be a trade-off,where I save on the PS and waste on the Output switch.
mvs sarma said:
I get confused as to whether the site is used for business as the word 'Customer' is used.If so what the person who offers the suggestion gained helping business person to improve his lot? (Sorry don't mis-understand me. ) or whether the site helps a learning process where technical knowledge of the seeker is elevated on the process of discussion.
I dont see how I use this wonderful site for business with my posts?
If I were promoting a product then it would be so!
I have been using this forum for one year now and learned a lot of things and tried to contribute wherever possible.So how does it matter when I learn something on open,free forums for either business purpose or my education purpose which I may or may not utilise in future for some commercial use unless of course its bound by a NDA(Non Disclosure Agreement).Even since its an open forum,people either students or professionals are definitely aided by the thoughts generated on a topic.
I also take back my words about the mockery and apologise for any discomfort.For a moment I forgot that everybody here is to help.