## Clipping Diodes

Frequent question abouts LED and other types of diodes.

### Clipping Diodes

Forgive me for asking a simple question.(I've been knocking back a little bit of Grandpa's Cough Medicine.lol) Symmetrical Clipping is with 2 Diodes.Asymmetrical Clipping is with 3 Diodes.If you use more than 3 Diodes in the Clipping Section(i.e. 2 sets of Diodes in series.) Would that still be Asymmetrical Clipping?
soupbone

Posts: 69
Joined: 25 Jun 2011, 11:14
Location: Tulsa,OK
Has thanked: 9 times
Have thanks: 0 time

### Re: Clipping Diodes

soupbone wrote:Forgive me for asking a simple question.(I've been knocking back a little bit of Grandpa's Cough Medicine.lol) Symmetrical Clipping is with 2 Diodes.Asymmetrical Clipping is with 3 Diodes.If you use more than 3 Diodes in the Clipping Section(i.e. 2 sets of Diodes in series.) Would that still be Asymmetrical Clipping?

Symmetry....balanced proportions!

Can be two diodes of like properties. However, if one diode is germanium while the other is silicon....one dropping .2V and the second dropping .6v, then those two diodes are asymmetrical. They are equivalent to one diode to 3 diodes.
“No man is so foolish but he may sometimes give another
good counsel, and no man so wise that he may not easily err
if he takes no other counsel than his own. He that is taught
only by himself has a fool for a master.”
–Hunter S. Thompson
PokeyPete
Resistor Ronker

Posts: 372
Joined: 31 Aug 2008, 02:45
Has thanked: 14 times
Have thanks: 65 times

### Re: Clipping Diodes

assymetrical is unequal forward voltage on the each side of diodes clipping.
symmetrical means equal forward voltage each way.
Put this and what PokeyPete said together and I think you get the idea.
"Contemplate it - on the tree of woe." :Thulsa Doom

atreidesheir
Diode Debunker

Posts: 747
Joined: 27 Apr 2010, 01:56
Location: Nashville
Has thanked: 452 times
Have thanks: 43 times

### Re: Clipping Diodes

If the diode test function on your multimeter reads the same for each set, that's what people mean when they say symmetric.

There's variation between diodes, but I find the effect of having asymmetric clipping is most pronounced when one side is approx. double the other.

However you will get minor textural differences by using 0.6V worth of germanium diodes on one side and 0.6V of fast silicon diodes (1N914/1N4148) on the other. Slower silicon diodes like the 1N400X family I've found have a similar sound to germanium, in that they are less bright than 1N914/1N4148s. Once the values on each side are similar though, the differences become very subtle.

For this message the author astrobass has received thanks:
dbat69 (19 Apr 2014, 06:29)
astrobass
Cap Cooler

Posts: 548
Joined: 02 Mar 2013, 02:30
Has thanked: 50 times
Have thanks: 73 times

### Re: Clipping Diodes

Interesting stuff folks!Thanks!
soupbone

Posts: 69
Joined: 25 Jun 2011, 11:14
Location: Tulsa,OK
Has thanked: 9 times
Have thanks: 0 time

TubeDude22