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DIY Stompboxes => Building your own stompbox => Topic started by: jimbob on January 03, 2005, 03:25:24 PM

Title: Another switch mod question - But Rat this time
Post by: jimbob on January 03, 2005, 03:25:24 PM
I want to do this Rat mod on my Rodent from the AMZ book where you use 2 diff sets of diodes. One are Leds and the other are 1n914's with what i believe is a spst switch. When open 1 set are used- when closed another set are used. Like a turbo rat mod it says. Anyway I suck at schematics (but im trying) and really such at understanding switches. One this http://generalguitargadgets.com/diagrams/rodentpl.gif i believe i would place a wire just beween c7 and d1 to the switch and another going from the switch to the other set of diodes- and then a ground on the end of the other ones?
Any help would be great.
Title: Another switch mod question - But Rat this time
Post by: jimbob on January 03, 2005, 05:29:59 PM
anyone? :D
Title: Another switch mod question - But Rat this time
Post by: jimbob on January 03, 2005, 08:12:25 PM
anyone?
Title: Another switch mod question - But Rat this time
Post by: Hal on January 03, 2005, 08:20:59 PM
i dont think its possible with a spst....gotta be a spdt
Title: Another switch mod question - But Rat this time
Post by: The Landlord is Dead on January 04, 2005, 12:29:25 AM
Use an spdt (on/on) switch. Wire up the center lug to the junction between c8 & c14. Solder one side of your 1n914 pair to the top lug. Solder one side of your LED pair to the bottom lug. Solder the other side of your 1n914 and LED pairs together and wire back to the juntction that connects to c7.
Title: Another switch mod question - But Rat this time
Post by: jimbob on January 04, 2005, 12:49:12 PM
Ill give it a try . Thanks!

jim
Title: .
Post by: petemoore on January 04, 2005, 01:53:04 PM
Adding lower threshold diode configuration to higher diode threshold config, the lower ones will do all the clipping, the higher ones will never hit threshold...
 Put a spst switch on the lower threshold diodes, and you can effectively  switch between diode types.