Two Diodes Together

shiner_man · March 30, 2011, 08:18:12 PM

I'm putting the following vero layout together and I can't fit the two diodes through the same hole:

Can I just solder them together end to end?

rousejeremy · March 30, 2011, 08:21:38 PM

yes

shiner_man · March 30, 2011, 08:24:17 PM

Quote from: rousejeremy on March 30, 2011, 08:21:38 PM
yes

Word. I guess this is what's known as in series in the business?

Thanks.

phector2004 · March 30, 2011, 08:24:54 PM

why are you doubling the diodes in parallel?

I don't think the voltage drop changes if they're not in series... Are they supposed to be in series?

~~Also, you might want to have a look at the jumper connecting to C7... doesn't seem to join anything~~

EDIT: Nevermind...

rousejeremy · March 30, 2011, 08:32:28 PM

I've built this layout. http://www.youtube.com/watch?v=UdKH1658XRo&feature=channel_video_title
Use shielded wire on the inputs and keep the lengths as short as possible. It can have an annoying high pitch oscillation when the drive and glass controls are maxed.

shiner_man · March 30, 2011, 08:46:28 PM

Quote from: rousejeremy on March 30, 2011, 08:32:28 PM
I've built this layout. http://www.youtube.com/watch?v=UdKH1658XRo&feature=channel_video_title
Use shielded wire on the inputs and keep the lengths as short as possible. It can have an annoying high pitch oscillation when the drive and glass controls are maxed.

Thanks for the tip.

shiner_man · March 31, 2011, 12:05:54 AM

Forgive my ignorance but what exactly is oscillation? I just finished building this and I get a slight hum at higher gain settings but
I though this was expected with almost every overdrive pedal.

digi2t · March 31, 2011, 08:55:55 AM

Maybe turn them 90 deg, put them on the same trace, and make a cut under each (example; C6, but twice, back to back). But you'll have to rearrange your layout somewhat.

Cheers,
Dino

Quackzed · March 31, 2011, 04:03:23 PM

oscillation is usually a high pitched squeel or whistle, not unlike mic feedback... it can happen for different reasons, but generally speaking it usually pops up when you have very high gain. usually its a symptom of a powerfully amplified signal bleeding into another -more sensitive- part of the circuit; like the input....

shiner_man · March 31, 2011, 06:09:32 PM

Quote from: Quackzed on March 31, 2011, 04:03:23 PM
oscillation is usually a high pitched squeel or whistle, not unlike mic feedback... it can happen for different reasons, but generally speaking it usually pops up when you have very high gain. usually its a symptom of a powerfully amplified signal bleeding into another -more sensitive- part of the circuit; like the input....

Oh well I'm not getting any of that. I guess I didn't do too bad!

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Two Diodes Together