Darlington Array to BS2
DonNohio
Posts: 24
I am thinking of using a 2004 Array output connected to the BS2 input pins using current limiting resistors. The input to the array would be connected to a Digitrax block detector output. The output voltage of the detector is 5v. I would be using current limiting resistors here too. The reason would be to isolate the BS2 from the block detector. Has anyone done this in another form, or see a problem ? I would like to integrate a Stamp into my model railroad for some animation.
Comments
You've got the right idea for both the inputs and outputs. Each Darlington input would only draw a fraction of the 20mA available from a typical Stamp output.
The only thing to check for reliable operation is that the ground for the block detector and the Stamp are tied together. Same with the loads the Darlington's are driving.
Cheers,
'
More then one will cause ground loops