Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Output Pin Driving Another Output Pin

Hello all, I've run into an unusual problem. I'll start off by describing my goal: I'm designing a circuit that can test for short circuits and open circuits in a wiring harness. The wiring har...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I can't draw a schematic right now. I'll try to explain with words.

Transistor gate/base near FPGA output.

Then the harness wire connected to the drain/collector.

The other side of the harness wire connects to:

1- the 12V pull up resistor

2- the gate/base of the receiving stage, near fpga input

The pull up to 3.3V near fpga input.

In other words, both resistors near to the receiver, while transistors are one per side.