You can increase the current up to max, or decrease the pull up on the phototransistor.
On Sun, Aug 12, 2018, 4:10 PM Jon Miller <
atsfus@...> wrote:
??? This may be a little
off topic for this group but I need some engineering help.? I'm using some TCRT5000 Infrared
detectors (eBay).? When testing a light brown colored underframe
the detector will trip at about 1".? However when the underframe
is black that reduces to about a 1/4".? [there
is more to this story but later if required]
??? My question, if I increase the current to the
IR LED (by decreasing the resistor) can I get more range?? It
appears the resistor now is around 30mA but the device specs say
it could take 60mA.? Maybe take to 45mA!:-\
--
Jon Miller
For me time stopped in 1941
Digitrax Chief/Zephyr systems, JMRI User
SPROG User
NMRA Life member #2623
Member SFRH&MS
