Princeton Applied Research VersaSTAT 3, Руководство по оборудованию

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VersaSTAT 3 Hardware Manual
VersaSTAT 3 Hardware Manual
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Onboard memory to store the programmed parameters and data point values.
The VersaSTAT 3 operates with VersaStudio in either the potentiostatic or galvanostatic
mode, described below.
1.2.1. Potentiostatic mode
In this mode, the VersaSTAT 3 controls the potential at the working-sense electrode with
respect to the reference electrode (see Figure 2). The counter electrode is driven to the
potential required (consistent with the + 12 V compliance of the control amplifier) to
establish the desired working potential. The range over which the working electrode
potential can be controlled is + 10 V.
-
+
WORKING
I OUT
I OUT
I/E CONVERTER
CURRENT RANGES (EXAMPLE)
2 mA
200 uA
20 uA
2 uA
200 nA
20 nA
E IN
E IN
-
+
POWER AMP
Cell Switch
COUNTER
SINGLE ENDED
-
+
REFERENCE
SENSE
E OUT
E OUT
DIFFERENTIAL
ELECTROMETER
Figure 2. Potentiostat-Mode Block Diagram