Information subject to change
97-7224006_3-31-15
7224 OPERATOR’S MANUAL – SECTION 5
30
STEP 2: Determine Required Compensation.
When operating an amplifier in Controlled Cur
-
rent mode, the load becomes an integral part of
the system. In order to determine the required
compensation for your load, begin by consulting
the following table to determine the approximate
compensation capacitance (C) required based on
the inductance of your load:
Load Inductance (L)
<200 µH
<>200 µH – <1 mH
>1 mH
Compensation Capacitance (CC)
0.001 µF
0.01 µF
0.1 µF
NOTE: Load Resistance (R) is assumed to be <5 ohms.
STEP 3: Determine if Default or Custom
Compensation is Required.
If your load inductance is between 200 microHen
-
ries and 1 milliHenry, and your load resistance
is less than 5 ohms, then you can likely use the
default compensation provided by the amplifier’s
factory-installed RC network. To select the factory-
default compensation, please see
STEP 4
below.
If your load inductance falls outside of the mid-
range, or if your load resistance is greater than
5 ohms, then you must calculate your required
compensation. If, after calculating your required
compensation, you determine that the default com-
pensation will be insufficient for your load, then
you will need to enable and install a custom RC
network. See
STEP 6
below.
STEP 4: Enabling Your Compensation
Setting.
AE Techron 7000 Series amplifiers can be enabled
with one of two compensation settings: default
RC network or custom RC network. The required
network can be selected via jumpers on the main
board. CC1 enables the default (factory-installed)
RC network, while CC2 allows installation of a cus-
tom RC network.
Figure 5.10
describes the default
RC circuit.
To select CC1, place jumper J5 in the UP posi
-
tion; to select CC2, place jumper J5 in the DOWN
position. (For jumper location, see the
“Advanced
Configuration”
section.)
IMPORTANT: If CC2 is selected, you must cal-
culate the compensation requirements for your
custom RC network and install the network on
your amplifier main board before operating the
amplifier in CC mode.
STEP 5: (Optional) Verify Suitability of
Default Compensation (CC1)
If desired, the following values of the components
contained in the default RC network can be used
with the formulas provided in
STEP 6
below to
verify the suitability of the default compensation for
your uses.
Pins Jumped:
1 and 2 (UP)
Compensation Resistor:
R63 (68 Kohms)
Compensation Capacitor:
C16 (0.047 µF)
Parallel Capacitor:
C11 (47 pF)
STEP 6: Installing an RC Network for
Custom Compensation
If the default RC network does not provide suit-
able compensation for your intended load, you
will need to install a custom RC network that is
matched to your load. This network will require two
components (a resistor (R) and a capacitor (C))
to be installed on the main board. To calculate the
approximate values required for each component,
use the following fomulas.
