Not happy with the Amplifiers currently on the market. I run around 1500 dumb nodes in my show and last year i went through a lot of the amplifiers you can get from ebay and amazon. Issue i have seen with them through testing is they do not like to be turned off and on a lot. Tunr them on and leave them on they are ok, but not for what we do. SO last year i started on designing a new amplifier, one that will work for what we do. This will fit inside a TA 200 enclosure. I am currently looking at using either a LM324
or an OP482
operational amplifier and 6 or 10 amp mosfets. I am unsure why there is such a huge price difference between them. I dont quit understand how to read data sheets, but another designer suggested the OP482.
I dont think there will be a very high demand for these, most folks use mainly smart pixels for their shows, i use smart for my tree and matrix, but everything else is dumb nodes. Was hoping for some input on my design from you smart designers out there. I did not include the 47 ohm or 10k ohm resistors between the OP Amplifier and the Mosfets on my design, they will included in the final PCB drawing. I also have plans to include an LED to show it is getting power. I am up in the air about including a fuse as all my power from the PSU's runs through a fused distro board.