HighFidelityGuy
20-04-2011, 15:53
My friend has a guitar wah-wah pedal that he wants modifying to have a separate DC input (currently uses battery) and a "true bypass" switch.
After researching the true bypass part I've found that this is usually done with a DPDT switch. I've decided that it would be better to use a DPDT relay to get a slightly cleaner signal.
After pondering the issue for a while I've come up with this basic design for the relay and power input:
http://i2.photobucket.com/albums/y48/DTM2000/Misc/Wah-wah01.jpg
The relay in the schematic is SPDT because the software I used didn't have DPDT. Just ignore that bit. The main two bit's I'm unsure on is where to wire the switch in the 5V line and whether or not to use a separate input cap for each reg. I've put a switch under each place I thought it could go. So which place would be best for the switch and should I use two separate input caps? Or is the whole schematic a steaming turd? Please bare in mind that designing electronics circuits is not my forté, so I welcome any suggestions.
Cheers. :cool:
After researching the true bypass part I've found that this is usually done with a DPDT switch. I've decided that it would be better to use a DPDT relay to get a slightly cleaner signal.
After pondering the issue for a while I've come up with this basic design for the relay and power input:
http://i2.photobucket.com/albums/y48/DTM2000/Misc/Wah-wah01.jpg
The relay in the schematic is SPDT because the software I used didn't have DPDT. Just ignore that bit. The main two bit's I'm unsure on is where to wire the switch in the 5V line and whether or not to use a separate input cap for each reg. I've put a switch under each place I thought it could go. So which place would be best for the switch and should I use two separate input caps? Or is the whole schematic a steaming turd? Please bare in mind that designing electronics circuits is not my forté, so I welcome any suggestions.
Cheers. :cool: