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dout w/darlingtons


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Guest wheverly
Posted

Does anyboy make a dout board that includes the darlingtons?

Guest wheverly
Posted

I have read that. What I want to know is if anyone is offering boards or kits for the darlington arrays or possibly a dout board that includes the darlington arrays on the same board.

Posted

Sorry.. - No boards or kits offered - I haven't even seen a ready made pcb layout for that. Maybe someone working midification projects has done it.

But the circuit is pretty simple, so it's easy top build on so called "veroboard" (board with holes in raster and copper strips)

Bye, Moebius

Guest wheverly
Posted

hi,

Thanks. I think the whole dout with the darlington array could be wire wrapped fairly easily. Just thought if there was a PC board available it would look neater.

Bill H

Guest wheverly
Posted

Hello again,

While on the subject of the dout module, I notice that there are 220 ohm resistors in series with each output. I assume they are there for current limiting and probably not necessary if the 74HC595's are connected to the darlington arrays. Is this correct?

Thanks,

bill h

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