Information subject to change
97-8004167 07-14-17
7224 & 7226 OPERATOR’S MANUAL –
SECTION 5
18
5.2.3 Controlled-Voltage/
Controlled-Current Mode Setting
To allow the amplifier’s output voltage to be con
-
trolled by its input voltage signal, place jumper
J4
in the
Right
position. To allow the amplifier’s
output current to be controlled by its input voltage
signal, place jumper
J4
in the
Left
position. See
Figure 5.5.
For more information on Controlled-
Current operation, see the
“Applications”
section
of this manual.
Figure 5.5 – Controlled-Voltage/
Controlled-Current Mode Setting
Figure 5.6 – Compensation Setting
5.2.4 Compensation Setting
(Controlled-Current Mode)
When a 7224 or 7226 amplifier is used in Con
-
trolled-Current mode, the current control loop is
tuned with one of two available RC networks.
Place jumper
J5
in the
Up
position to select
CC1
network. Place jumper
J5
in the
Down
position
to select
CC2
network. See
Figure 5.6.
For more
information on Controlled-Current operation, see
the
“Applications”
section of this manual.
In Controlled-Current Mode, the load is part of the ampli-
fier circuit, and the relationship of the load to the amplifier
is critical. For proper and safe operation in Controlled-
Current mode, you must obverve the following guidelines:
1.
Properly attach a load before operating the
amplifier.
2.
DO NOT use a blocking capacitor.
The load must
have a DC path.
CAUTION
3.
Never leave the load open.
If you feel the load
must be fused, which could lead to a potential open
circuit, please contact AE Techron Application Engi
-
neering department.
4.
Check to make sure the load has some inductive
component.
5.
Provide appropriate Compensation for the load.
6.
If oscillation occurs, turn off the amplifier im
-
mediately.
Failure to follow these guidelines may result in damage to the amplifier or load.