Model 333SingleChannel USBChromatography
DataSystemRelay ( Contact Closure ) Installation
Solder the7812 volt-
age regulator chip, the
two capacitors and the
redandblackwires to
theboardas shown.
Be sure to install the
10ul electrolytic capac-
citor with thepositive
side facing the little+
signsilkscreenedon
theboard.
Model333
Relay Installation
Page 3
The positive leg of the 10uf
cap is longer and the nega-
tive side of the cap is
marked with a stripe.
The green .01uf cap can be
inserted either way, it is not
polarity sensitive.
10uf
+
The 7812 voltage regulator’s
metal side should be ori-
ented to the right as shown.
