Sunking diodes

[thoml]

 I had noticed a site that listed the D4 for a Klon clone as a 1n4739 - what might change in the sound using one of those rather than the 1n4742 in the Sunking? Thanks.

[madbean]

No. That is for reverse polarity protection and also to prevent from sending too high of a voltage to the charge pump.

[CRBMoA]

The larger issue is the breakdown voltage of the Zener. I am at the office, but I know that some BOMs list a Zener that breaks down at 12V, which will offer too little protection for a MAX 1044 that will die above 10.2 V.

I sourced Zeners that break down at 9.1V. So I got that worked out. BUT, the 1044 I used is whining like a (Insert People group to insult here), so I'll need to order a better chip, as Madbean advised on another board.

THAT chip can be found HERE.

[jkokura]

Link's broken by the way...

Also, the TC1044SCPA has been really successful for me to use in two sunkings so far. It's a great alternative that's cheaper than the MAX1044, and it accepts a higher input voltage also.

Jacob

[Jimihendrix1987]

Hi there !

I'm new here ! I'm from Spain and I'm trying to build the sunking ! I bought 1 sunking pcb 2 weeks ago, and now I've got all the components on the table I'm ready to build it !!

But I'm in doubt with one diode. The D3 1n4742 !! I bought the components at BanzaiMusic (germany) and they didn't have this diode. However, I think I bought a similar diode. It's a 12v Zener Diode 1,3w, could I use this one instead of the 1n4742?

I'm waiting for your answers guys !

Thanks a lot ! I love MadBean Projects 

[CRBMoA]

But I'm in doubt with one diode. The D3 1n4742 !! I bought the components at BanzaiMusic (germany) and they didn't have this diode. However, I think I bought a similar diode. It's a 12v Zener Diode 1,3w, could I use this one instead of the 1n4742?

That depends on which charge pump you bought.

If you bought a 7660, I believe they will take up to about 13V before they make the magic smoke and die.

But if you got some version of a 1044, you will need a 9.1V Zener, because the 1044 series chips will not tolerate more than 10.2V, per my post above.

And welcome to the forum!

[Jimihendrix1987]

Hi !! Thanks for answering

I received the components this morning, and I have just finished the klon. It's working !!!

Woaaaoo It sounds like HEAVEN !! Best pedal in my life !!!

I bought a ICL7660SCPA. And I'm using this 12v Zener Diode 1,3w (which don't have any name written in it). By now I'm using a 9v battery and I have been playing for 1 hour with the pedal switch on, but I haven't got any problem !

This diode: http://www.banzaimusic.com/12V-Zener-Diode-1-3W.html ... I'm always buying there, but they don't have the 1n4742. Could you suggest me any substitute? (from banzai)

Will I have a problem powering the pedal with a power plant?

Oh... My Pink Led doesn't bright I'm using a DPDT switch very harmed... I think that will be the problem

Thanks Man 

[small fish]

But I'm in doubt with one diode. The D3 1n4742 !! I bought the components at BanzaiMusic (germany) and they didn't have this diode. However, I think I bought a similar diode. It's a 12v Zener Diode 1,3w, could I use this one instead of the 1n4742?

Hi to spain!

I´ve built mine with the same parts from banzai. I´ve ordered the 12V zener 1,3W (SKU 18894) but due to the lack of some other diodes, I´ve placed an order at http://www.effectsconnection.com. He´s got the right ones ($0,10 each + postage). Though the first time I used the 12V Zener, but changed later. No probs, either way.

Plz be careful with the 7660 ic. Banzai gave me the wrong ones  : 7660ACPAZ (Banzai article: SKU16754 - at the webshop it´s named as ICL7660SCPA, but it´s definetly not!). They will produce that high pitch noise, which was discussed several times here. I had the same problems and ordered the "real thing" at www.uk-electronic.de.

regards,
carsten

[Jimihendrix1987]

Hola again

Thanks for the advice, Carsten ! They have sold me a 7660SCPAZ with a z at the end, however I haven't heard any high pitch noise. Is this the correct IC? What about the final Z?

I'm loving this pedal !! Incredible !!

Thanks 

[small fish]

Hi,
the 7660SCPAZ is exactly the one I´m using now - no probs with it. I´ve ordered two of them and they sold me the ones I mentioned. Actually I didn´t check them before pluggin in. I wondered if my tubes are already f***** off.....I´ve just changed them. The noise reminded me of some dying tubes...

Try the search function, there has been a lot of questions bout the right IC, which letters, 1044 or 7660, aso, here (I actually don´t understand all that electronics....sorry...minor knowledge  ) but it helped me to get the right one. In this particular discussion, I´m a noob-noob 

I totally agree, this pedal is awesome, like so much stuff I found here...errr...you may find here 

Try the Spackler in front of the Sunking. My Strat was taken so much higher with both of them!

regards,
Carsten

[Jimihendrix1987]

That depends on which charge pump you bought.

If you bought a 7660, I believe they will take up to about 13V before they make the magic smoke and die.

But if you got some version of a 1044, you will need a 9.1V Zener, because the 1044 series chips will not tolerate more than 10.2V, per my post above.

And welcome to the forum!

Hi there again ! I'm still in doubt ! I read again the topic and I'm doubting about what CRBMoA said ! Let's begin.

I'm using a 7660 with a 12v zener 1.3w... He said with a 7660 could reach 13v !! So... What kind of zener should I buy (because I cant find those F"@#ing 1n4742? 13v? 14v? Which ones?

Hope you can Help Me ! Thanks a lot

[small fish]

Try "effectsconnection", as I mentioned some posts before.
Maybe you find some other diodes / parts to change / tryout / you need and place a real order :-)

It´s a fair deal

regards

[bigmufffuzzwizz]

I ordered mine from futurlec. They have them in all voltages. Check out tayda electronics too. They have tons of parts!