DR. Boogie.... Check!

Started by imzuker, July 24, 2012, 03:06:50 AM

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darron

from your diagram it looks like it WILL work to bypass the effect. however, the switch isn't carrying ground or V+ so i can't see it disconnecting the battery.



usually people use a foot switch too of course (:

there's a bypass write up here, but it looks like you've got the grips of it already:
http://www.dazatronyx.com/tech/what-is-true-bypass/




disconnecting the battery on bypass will make a massive loud pop when you engage it again.





have you used the trick with a stereo input jack to disconnect the battery when there's no guitar plugged into the input?



luckily though, the boogie circuit should draw bugger all current, so a battery should go for ages while it's in bypass. some discrete FETs should draw more than opamps etc.

the biggest current draw will probably be from an LED being on if you are using one (use some simple ohms law to calculate that).






beyond that, if you really insist on using a battery then i guess get some rechargeable but a powder supply would be more friendly on the environment.
Blood, Sweat & Flux. Pedals made with lasers and real wires!

imzuker

So how can i do the trick with the stereo jack?
and how can i add a Power supply that isn't the battery? what parts do i need?

darron

the stereo input jack is simple. it will disconnect the pedal power when it's not in use. most companies do this.



you've noticed that the power negative (-) is also hooked to the casing of the enclosure and also to the earth on the input and output. when you put your mono guitar lead in the stereo jack the ring and sleeve connections get shorted out and this can be used as a switch to turn the effect on.






if you'd like to give it an allocation for a 9VDC input then you can use a 2.1mm socket which will be the same as most other companies (boss, ibanez, whatever).




to give you an idea what i mean, check out any one of the generalguitargadget.com layouts, like the BSIAB2 one here:

http://www.generalguitargadgets.com/pdf/ggg_bsiab2_lo.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a

diagrams are always more helpful (:     plus this saves you checking how those DC sockets hookup with which pins...
Blood, Sweat & Flux. Pedals made with lasers and real wires!