DS-1 Clipping Layout

[kurtlives]

I just drew this up to experiment with the DS-1s clipping section.

Does it look right?

Thanks

I went by this


Heres my layout

[Jobet]

What I'd do is just PTP wire it to a DPDT switch. The switch will be bigger but it fits (done it a lot of times). That will save you from having to do it on veroboard.

[kurtlives]

The vero is already done. It is sitting right infront of me.

I still be cool to have an external clipping section that I can adjust.


So does it look good?

[Jobet]

Let's see. I haven't even asked what action you wanted.

Looking at your switch configuration, this is what happens. Throw it one side and you will have one diode in parallel with the LED.

Throw it in another side and you will have just the diode on.

In my mind though, a diode in parallel with the LED is useless (okay assuming that they are pointed in the same direction. I mean, cathode to cathode and anode to anode.

Why I say this is because the silicon diode will turn on faster and will short out the LED. You're practically just selecting between a silicon diode and an LED in parallel with a diode (which is also just, electrically, the silicon diode only because it will short out the LED). Thus, there will be no change in tone as you throw the switch from one side to the other.

And if this is what you want, there is a simpler way to do this. Just wire the anode of the diode to the left leg, and the anode of the LED to the right leg. Short the other ends (i.e. the cathodes of the LED and diode) together. Wire that to the cathode of D4. Then take the center lug and wire that to the anode of D4.

There is another way to do it, which will give you the combination of both the LED and the diode in series. Wait, I'll fire up my Visio and post the schematic. 

[kurtlives]

Thanks Jobet

I see what you mean. What I actually want is to have the switch select either the LED combo or the single diode.

[Jobet]

Here it is.



With this configuration, you switch between an LED and the diode.

But wait, there's more!

If you use a center-off SPDT switch, you will have the ability to switch between the LED, the diode, and the combination of the LED and diode in series . What the switch does, if you throw it on one side is that it shorts out either the LED or diode, putting it out of the circuit. If you leave the switch at center-off, you will get both the LED and the diode in series. Cool huh, three tones for the price of one switch

Yeah I just learned this somewhere from the net, I didn't invent it

[kurtlives]

Wow thank you so much Jobet, I can't wait to try this. I am going to use a SPDT On-Off-On. But where does the middle wire of the switch go?

I am still for now going to make this external with a little piece of vero. I can't wait to try all my diodes.

I tell you how it goes. I need to finish studying for a history test though

[Jobet]

Wow thank you so much Jobet, I can't wait to try this. I am going to use a SPDT On-Off-On. But where does the middle wire of the switch go?

I am still for now going to make this external with a little piece of vero. I can't wait to try all my diodes.

I tell you how it goes. I need to finish studying for a history test though

It goes nowhere. The only thing that the switch does is short out the diodes/LED's that you want and if the switch itself is "off", it shorts out nothing and hence puts in both the LED and diode into the circuit.

[kurtlives]

Alright so I leave the center lug with nothing on it.

Alright I will try this today, I will tell you how it goes.

[kurtlives]

So I wired it up and put the little peice of vero outside the DS-1. I used Jobets idea btw.

When I turned it on it worked but the LED did not light up and there was no change when I moved the switch.

Any ideas?

[Jobet]

check the polarity on the LED.

[kurtlives]

I tried it both ways.

Even when there was nothing on the vero it still worked.

[Jobet]

Ditch the vero. Go point to point. Most likely this is where the problem lies.

Attach D3 directly to the switch. Anode to D4 "cathode", D3 cathode to D4 "anode".

[kurtlives]

Alright Ill try that but why would the vero screw things up?

[Jobet]

Alright Ill try that but why would the vero screw things up?

Just an attempt at eliminating something that might confuse. Like when I said "Cathode of D4", I was referring to the D4 of the DS1. So just to remove that probable cause of confusion, just ditch the veroboard, install the silicon rectifier diode directly on the DS1 board (D5 it seems on the schematic) and wire the schem I gave you on the cathode and anode of the DS-1's D4.

It cannot not work when done right. Done it many times.

[kurtlives]

So there is a diode in D4 even when there is a switch?

[Jobet]

So there is a diode in D4 even when there is a switch?

No more diode in D4 on the DS-1 board. That is taken over by the switch and the LED& diode that are on it.

Put a Silicon rectifier, switching, or germanium signal diode where D5 on the DS1 board used to be.

[kurtlives]

Jobet I tried it without the vero.

I still get sound and such but changing the switch does nothing. Do you think I should try my origibal layout?

[kurtlives]

No one?