Ever since I finished my leach amp, I have been thinking of ways to improve the design. I have decided to redesign the pcb in order to use TO-3P (TO-247) devices that will be integrated into the pcb, and effectively eliminating a lot of external wiring for the amplifier (12 wires to be exact).
I have the pcb layout mostly worked on paper, and have about half done on the computer. Here are a few pictures of my progress:
http://brian.darg.net/leachamppcb
Feel free to add comments to the pictures in the gallery.
The preliminary board specs will be these:
4" x 6" dimensions (dimensions might approach 3" x 6" if possible)
2 layer pcb
0.093" board thickness
2 oz copper on both sides
soldier mask on both sides
silkscreen on top layer
Preliminary parts list with dimensions:
http://brian.prohosting.com/leachamp.xls
I most likely will use the MJL3281A/MJL1302A (more linear) devices instead of the MJL21193/MJL21194 output devices, but since I currently have some MJL21193/MJL21194 devices, I will use them for prototyping.
Any comments/suggestions on this project would be appreciated. I will update the pictures of my layout, as I near completion. I should finish the layout soon, and get some prototype boards made in august, then if everything works good, get a large batch of production quality boards made for myself and some friends, possibly opening up room for others, but this is a couple of months off, so I will discuss this later.
--
Brian
I have the pcb layout mostly worked on paper, and have about half done on the computer. Here are a few pictures of my progress:
http://brian.darg.net/leachamppcb
Feel free to add comments to the pictures in the gallery.
The preliminary board specs will be these:
4" x 6" dimensions (dimensions might approach 3" x 6" if possible)
2 layer pcb
0.093" board thickness
2 oz copper on both sides
soldier mask on both sides
silkscreen on top layer
Preliminary parts list with dimensions:
http://brian.prohosting.com/leachamp.xls
I most likely will use the MJL3281A/MJL1302A (more linear) devices instead of the MJL21193/MJL21194 output devices, but since I currently have some MJL21193/MJL21194 devices, I will use them for prototyping.
Any comments/suggestions on this project would be appreciated. I will update the pictures of my layout, as I near completion. I should finish the layout soon, and get some prototype boards made in august, then if everything works good, get a large batch of production quality boards made for myself and some friends, possibly opening up room for others, but this is a couple of months off, so I will discuss this later.
--
Brian