Barber Silver LTD help

[mmaatt25]

Hi,

I'm building a Barber Silver LTD on perfboard using Xavier's layout in the gallery: http://www.aronnelson.com/gallery/main.php/v/Xaviers-shrine-of-noise/Layouts/SilverLTD.gif.html

I've built it all except for the diode marked D5 which on Xavier's layout is listed as 1N900x and on David Barbers schematic no value at all, see here: http://www.barberelectronics.com/images/barbersilverltd.jpg

I think it's just reverse polarity protection?

I haven't got any 1N900x diodes only 1N4148, 1N4001s & 914s can I use any of these?

Many thanks

Matt

[stm]

The schematic you linked above reads "1n4148" in the center of the four-diode group.

[chi_boy]

I think it's just reverse polarity protection?

I haven't got any 1N900x diodes only 1N4148, 1N4001s & 914s can I use any of these?

Sounds like a typo to me.  I have a copy of Madbean's layout and he shows D5 as a 1N400x.


http://www.madbeanpedals.com/builds/ltd/BarberLTD_rev1.gif

[mmaatt25]

All the clipping diodes are 1N4148, all done.

The diode marked D5 is part of the voltage divider. I've seen this shown as 1N900X, I haven't got any of these can I sub it for one of three shown in my original post: 1N4148, 1N4001s or 914?

Thanks

Matt

[stm]

All the clipping diodes are 1N4148, all done.

The diode marked D5 is part of the voltage divider. I've seen this shown as 1N900X, I haven't got any of these can I sub it for one of three shown in my original post: 1N4148, 1N4001s or 914?

Thanks

Matt

For polarity protection an 1N4001 through 1N4007 is the way to go.  As chi_boy already mentioned, 1N900x is a typo and the correct value is 1N400x, meaning any  diode between 1N4001 and 1N4007 will do.  To point the obvious, this diode has no effect in the sound of the circuit.