220 V matrix control

[Medtronic]

Dear All my friends

i need to design a 8X8 led matrix ... no problem with the theory or the software ... but how can i control the 8x8 matrix for 220 v output .... i need to control the 220 v for out the row and the col to access one out for a moment ....

please advice as soon as possible

Best Regards

MedTronic

 

[D.A.(Tony)Stewart]

Why not DC? What power level?

For AC you need isolated drivers to a ZCS Triac or std Triac.
To select each , you need an 8x8 DEMUX.

Options include opto isolators . or pulse transformers.

are these dimmable? Programmable?

 

[Medtronic]

thanks for your replay ....

No dim .... no programmable ..... and let it a 220 V dc ... please give me a schematic for your options

thanks very much

 

[Medtronic]

where are you my friends

please advice

waiting for your help

 

[BradtheRad]

It would help if you'll explain why it is important to run the project at 220V.

A few volts is sufficient to power LED's and devices to switch them.

 

[Medtronic]

dear my friend
my leds are connected in series .... it sold as it is ... and run at 220 v ac with and without bridge rectifier ... please help

 

[ads-ee]

dear my friend
my leds are connected in series .... it sold as it is ... and run at 220 v ac with and without bridge rectifier ... please help

Wait you're saying the LEDs are in series?

can't make a 8x8 matrix with series LEDs...current through 1 LED is the same current that is flowing through all of them. Can't individually turn them on an off in a series arrangement.
An 8x8 matrix has to be built something like this

 

[Medtronic]

dear my friend

i mean one channel is 220v and the leds connected in series all at one channel ..... can i explain right now ?