Junction Noise

[Scott Gravenhorst]

Ok, I'm not sure why, but using a reverse biased 1N34
with 20 volts and a 1 meg resistor I get nice noise,  Not
particularly more amplitude, but all of a sudden the pesky
60 cycle stuff I was seeing on the scope is gone.  I
tried several PNP and NPN transistors and I kept getting
60 cycle hum mixed into the noise.

Harry Bissell <harrybissell at prodigy.net> wrote:
>Beats the shit out of me !
>What is the reverse breakdown voltage of the 1N34... can you break it
>down ???
>
>You "might" be able to reverse break an LED that might be fun also....
>The spec is
>about 5V but I bet it takes 15-30V...
>
>report on list I'm sure everyone's interested !!!
>
>H^)  harry
>
>Scott Gravenhorst wrote:
>
>> I'm playing with reverse bias junction noise.  Will a germanium
>> diode (1N34) reverse biased, be noisier than a small signal
>> silicon transistor BE junction?
>>
>> -- Scott Gravenhorst : On The Edge, but the Edge of What?
>> -- Linux Rex, Linux Vobiscum  |  RedWebMail by RedStarWare
>> -- FatMan: www.teklab.com/~chordman
>> -- NonFatMan: members.xoom.com/_XMCM/chordman/index.html
>> -- The 21st century does NOT start in the year 2000!!!
>
>

-- Scott Gravenhorst : On The Edge, but the Edge of What?
-- Linux Rex, Linux Vobiscum  |  RedWebMail by RedStarWare
-- FatMan: www.teklab.com/~chordman
-- NonFatMan: members.xoom.com/_XMCM/chordman/index.html
-- The 21st century does NOT start in the year 2000!!!