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Projects => General Questions => Topic started by: averagejoe on January 19, 2011, 12:34:14 AM

Title: total n00b - zygote
Post by: averagejoe on January 19, 2011, 12:34:14 AM
So I'm new to this, but I've started the zygote. Im ordering parts and dont really understand what caps are electrolytic and what are film. Also, have any helpful tips beyond this?
Title: Re: total n00b - zygote
Post by: Mark_McQ on January 19, 2011, 02:29:20 AM
Electrolytic are the cylinder shaped ones, as below. They come in 2 types. Polarised and non-polarised. Polarised ones have a +tive side and a -neg side. The casing is marked with a white or broken line on one side to show which is the negative. If your project requires a polarised cap(s) anywhere, the schematic or layout will have a small + marked on one side. Non polarised can be fitted either way around.

(http://www.clickpartelectronics.com/images/10%20uf%20electrolytic%20capacitor.jpg)

Film ones come in a few varieties. Ones you'll most commonly use in pedals are the box type and the large 'chicklet' shape ones. There's also ones shaped like cylinders with a leg at each end.

(http://www.o-digital.com/uploads/2179/2184-1/AC_Votlage_Metallized_Polyester_Film_Capacitor_TS02A_204.jpg)
(http://www.o-digital.com/uploads/2179/2184-1/Metallized_Polypropylene_Film_Capacitors_Box_Type_MPB_385.jpg)
Title: Re: total n00b - zygote
Post by: Haberdasher on January 19, 2011, 02:50:05 AM
I would add that the caps shown in the pics above are "radial" ones.  The zygote calls for "axial" caps because of the way the board is laid out.  That means they don't stand up on the board, but lie flat- sort of like most resistors.  Examples:

(http://www.o-digital.com/uploads/2179/2184-1/Axial_Standard_Aluminum_Electrolytic_Capacitor_TMCE15_201.jpg)

(http://www.pinballlife.com/images/products/axial_capacitor.jpg)
Title: Re: total n00b - zygote
Post by: jkokura on January 19, 2011, 04:40:28 AM
Another helpful tip with the zygote is to also build a Road rage, which will help you supply the right kind of power to the zygote without having to have a special kind of power supply. It's a few more parts, but if you can build a road rage as well you'll have an easier time powering the fuzz!

Jacob