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Hi Ron.
I have connected the circuit :
VCC 12V, VIN 5V.
Out connected to a Resistor 12Ohms to GND.
DG to 12OHMS to GND.
Measuring the voltage drop the resistors depending on if the Out it OPEN, SHORTED TO GND or NORMAL(as above)
I cant get the truth table to match up..
I know im doing...
Hi Ron,, Cheers. I dont have a 55 timer, but i have loads of test equipment. Power supplies, Volt meters, scopes etc.
Hopefully what you have suggested will be enough without the 555 timer.
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