Photodiode Question

formatting link

Last time I worked with them was about 25 years ago. It was used as a oscillator/ramp generator for a proportional heating control system in a 'Centrifichem' blood chemistry analyzer. Oppie

Reply to
Oppie
Loading thread data ...

(Hal

ites:

don't have to

.. =A0(CdSSe's

n history.)

tory?

ate spam.

e

an

LDRs that

er

AnalogOptoiso.pdf

about

s. =A0Are

DR's?

t's

oise

A

if

o

ly get

eries

e. I'm

he

rrent

or

noisy

ssy it's

s

d on

en

rent)

nt

y...

l

(R

k' to

hat.

a

's

I

ve

n

ext -

The noise temperature of a FET opamp looking at say a 1 Meg or 10 Meg resistor can be truly tiny. (I guess noise temperatures only really make sense if you stick to a fixed input impedance.)

George H.

Reply to
George Herold

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.