karesz said:
Hi,
For me is an interesting question what means + & - on your Relay?
If is + for the Anode an built in diode: its yet revrsed in the circuit...
But I didnt understand: do you have some problems pls. or you likes some "supervisoring"?
K.
I haven't built the board yet; I want to make sure that it works when I do. Yes, I could definitely use some "supervisoring".
Regarding the +/- on the relay, it is a panasonic TN2-12V, and there is a permanent magnet used on the inside, which requires correct polarization of the coil. There is no built-in diode. I believe that I do have the relay hooked up correctly.
srizbf and nikhilsigma: Thanks for the notes on the 10K resistor. H&H mentioned using it when making a simple transistor switch to turn on a light bulb. However in that case he has a mechanical switch hooked up to the base, and it is floating when the switch is turned off. Thus the 10K resistor to ensure it is pulled to ground.
I will remove that resistor since you guys think it is a bad idea.