Ok. What is the easiest way to do this. I have now two pedals into one housing (Fulldrive II and a Hot-tubes) and as I LOVE the Fulldrive on 18V, I dislike the Hottubes on this.
I already tried a normal Vref downgrade of +18V but that did not work.
Someone?
7809 regulator.
Wow..... is it that simple?
Just put 18V in the device, out comes 9V......
Wow.
Not totally sure, but i guess a 9V zener diode could also do the job.
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Wouldn't the 9V zener diode just start allowing flow @ 9V (As in nothing until you hit 9V then everything after that -- until it burns out of course) ?
a 7809 regulator is the best way to go add a capacitor to the input say a 100uF
Cheers
Quote from: Aurin on October 21, 2005, 03:30:12 PM
Wouldn't the 9V zener diode just start allowing flow @ 9V (As in nothing until you hit 9V then everything after that -- until it burns out of course) ?
I remember reading about using zener diodes to drop voltage. I think the zener's supposed to be placed from ground to +18, this way it will
limit the voltage to 9V. You also need a resistor before the zener, to limit the current through the zener(as in LEDs).
However this might not be the best approach as you need to lose 9 volts, a zener might not be able to handle that much dissipation.
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Hrm.... Point... wasn't thinking of it that way --- Like using LEDs to drop 1.6V at a time.... Ah, the follies of being a home-schooled newbie =)
Here's a nice zener link:
http://www.allaboutcircuits.com/vol_3/chpt_3/9.html
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