madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: tenwatt on April 22, 2011, 07:37:40 PM

Title: Road Rage Regulator?
Post by: tenwatt on April 22, 2011, 07:37:40 PM
Will this (http://www.mammothelectronics.com/LM78L05ACZ-3-Terminal-0-1A-Positive-Voltage-Regula-p/400-1108.htm) regulator suffice in the Road Rage?
Title: Re: Road Rage Regulator?
Post by: jkokura on April 22, 2011, 08:44:58 PM
Yes if you want 5v

Jacob
Title: Re: Road Rage Regulator?
Post by: tenwatt on April 23, 2011, 12:21:42 AM
Would any of these (http://www.mammothelectronics.com/SearchResults.asp?Search=regulator) work for 18v?
Title: Re: Road Rage Regulator?
Post by: jkokura on April 23, 2011, 12:52:18 AM
No.

Regulators in the 78 series are really easy to identify. The last two numbers indicate the regulated voltage, so 78L05 is for 5V, 78L12 is for 12V, etc.

Jacob
Title: Re: Road Rage Regulator?
Post by: Liam on April 24, 2011, 04:33:57 PM
You don't need a regulator for 18 volts from a Road Rage as far as I can work out.  The ~18V pad should give you a pretty well regulated and quiet 18 volt supply (or almost 18V anyway!) without actually putting a regulator on the board.  I've not quite finished my first Road Rage yet, but that's how I'm planning to try it.  I'll let you know.

Liam
Title: Re: Road Rage Regulator?
Post by: jkokura on April 24, 2011, 04:43:06 PM
You may need one if you feed the charge pump more than 9V. Some charge pumps will take 12v and put Out ~24V. In that case you might need an 18V regulator.

But he is right. Feed a charge pump 9.5V and you'll automatically get 18V.

Jacob
Title: Re: Road Rage Regulator?
Post by: tenwatt on April 26, 2011, 06:26:02 PM
Quote from: jkokura on April 24, 2011, 04:43:06 PMBut he is right. Feed a charge pump 9.5V and you'll automatically get 18V.
I'm going 9V in and 18V out is all I'm really wanting.