https://community.element14.com/members-area/personalblogs/en-USTelligent Community 12https://community.element14.com/members-area/personalblogs/m/managed-videos/151414Mon, 01 Jun 2026 05:18:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:7a383e61-5bfc-4663-a97f-f7b6cb9342cfralphjyhttps://community.element14.com/members-area/personalblogs/b/michael-kellett-s-blog/posts/audio-power-amplifier-sillinessSat, 30 May 2026 13:48:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:77ad82f9-2303-4654-96b9-65c95a65d5b3michaelkellettRecently I blogged about a little power amplifier that I had worked on with Shabaz Two pre-amplifiers and a power amplifier. That design is pretty simple and adequate for his plans but I got to wondering just how much power you could get into a speaker with a linear power amplifier working with a single DC supply in the range 6 - 8V. I doodled around a bit and came up with this. It's not quite a ready to build design - because it still has some magic current sources which will need to be turned into real parts. And the phase splitter looks a bit messy. It can manage 4.83W into a 4 ohm load just below the clipping level. The distortion is about 0.3% at 1kHz at this level. The key to the design is the output power transistors which were chosen to have very high gain which allows them to pull the load to within less than a 1V of the power rails with a current of up to 1.6A. I've been wondering if it's worth building - anyone have a use for it ? Or better still any ideas for improvement ? MKaudioanalog_electronicshttps://community.element14.com/members-area/personalblogs/b/nexgen-flight-simuator/posts/hacking-rebuilding-a-megamax-device-programmerFri, 29 May 2026 20:20:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:58b44412-0320-4beb-abae-54ff96f2809ephoenixcommHacking/Rebuilding a MegaMax Programmer I have one of these programmers. I always thought that I could get it to work, but nothing, it's not supported, and nobody would fess up, the goods.. That's how I ended up here. The goal is to use the same case, its ZIF socket, and convert the I/O to Ethernet. I will have to get a new pc board made, as I wish to keep the form and function pretty much the same. I wish to cover EPROMs, EEPROMs, and maybe small bipolar PROMs as well. This is the next step: First, I need to pull the following: ZIF socket BD130 (power transistors Si-NPN) x 12 BD135 ( power transistors Si-NPN) x 4 LM317T ( 3-Terminal Positive Adjustable Regulator) x 4 Xlinx XC3030-70 It seems to be reprogrammable. But it needs to be reprogrammed every time it is turned off. :( There are 2x 74HC273 ( Octal D-Type Flip-Flops With Clear positive input ) its outputs are connected to a 2N4401 (NPN BJT). The LC to use and program the XC3030 is out of my wheelhouse. So I can't use it, anybody want the dam thing!! Let me know. asp!!. I will ship in the lower 48 free. thanks... So, it looks I have to start with an MCU of some ilk; it needs Ethernet connectivity. A USB drive to hold all the tables. Please note I have better pics, but it seems that they have farted with this stupid editor again?! I can't load pics from my PC anymore!!!! ~~ Thanks for checking it out CrisnexgenMega Max device programerhardwareflight_simulationhackingsoftware