Electronics Question, Voltage

[BullBoyShoes]

You do know what a zener diode does with reverse bias?

http://en.wikipedia.org/wiki/Zener_diode

Burnsy

Yes I know how a zener diode behaves. The link you have provided clearly shows a series resistor to act as a dropper, yet above you state this is not required. I think you are the one who should be reading this

 

[MikeHunt79]

Easiest thing would be to get hold of 2 or 3 diodes, say a 1N5818, and put them in series with your 4.5v supply. The voltage drop accross the diodes will bring the supply down to approx 3v.

2 diodes in series would give 1.4v drop which is perfect.

I often add diodes to case fans to slow 'em down a touch.

 

[Burnsy2023]

Yes I know how a zener diode behaves. The link you have provided clearly shows a series resistor to act as a dropper, yet above you state this is not required. I think you are the one who should be reading this

It appears I could be a bit rusty on this....I'll read up, but in the meantime apologies

Burnsy