B
blisca
- Jan 1, 1970
- 0
Hi,i'm intereted in learning how to preamplify infrared signals for such a
long distances.I know about the photomodules commonly used in TV's and
VCR's,they have good sensibility,appears they don't saturate if exposed to
the sun light,but the common europeans types,as TSOP 38 and so on appears
slow to my needs.In fact they decode a burst of too many pulses,while i
would recognize a pattern of few pulses at frequency of tenth of KHZ .I
tried to build at home some IR preamps,with autobias (to be immune to sun )
but no AGC or bandpass filter,being limited by space.I had some results
using a cheap opamp,a scraped op213,it has a 3.4 MHz Gb ,it works but is not
enough for my needs.Can anyone suggest me a site talking about how to
preamplify an IR signal ?
Many thanks .
Diego
Milan,Italy.
long distances.I know about the photomodules commonly used in TV's and
VCR's,they have good sensibility,appears they don't saturate if exposed to
the sun light,but the common europeans types,as TSOP 38 and so on appears
slow to my needs.In fact they decode a burst of too many pulses,while i
would recognize a pattern of few pulses at frequency of tenth of KHZ .I
tried to build at home some IR preamps,with autobias (to be immune to sun )
but no AGC or bandpass filter,being limited by space.I had some results
using a cheap opamp,a scraped op213,it has a 3.4 MHz Gb ,it works but is not
enough for my needs.Can anyone suggest me a site talking about how to
preamplify an IR signal ?
Many thanks .
Diego
Milan,Italy.