Information subject to change
97-8004167 07-14-17
7224 & 7226 OPERATOR’S MANUAL –
SECTION 6
30
circuit because this can decrease stability and
may increase inductance.
• The parallel capacitor in the RC network serves
to increase stability but can be removed, if it is
not required for system stability. If the parallel
capacitor is used, it will usually decrease the
value of resistance needed.
• In multiple amplifier systems, expect to decrease
the value of R63 in series systems by 1/2.
After final adjustments have been made to the
circuit, the final waveform for your planned appli
-
cation should be tested to confirm the amplifier’s
compensation setting.
NOTE:
•
If possible, use 1% metal film resistors. AE
Techron discourages installation of potentiome
-
ters in the resistor location of the compensation
6.3
Multi-amplifier Systems
The 7224 and 7226 amplifiers may be used with
other amplifiers of the same model to increase
voltage or current. Because the internal circuitry
of 7224 and 7226 amplifiers is not connected to
chassis ground, these amplifiers are well suited for
use in series or parallel.
Up to three amplifiers may be configured in series,
and up to four may be configured in parallel. Con
-
figurations with more amplifiers may be possible,
depending on the application. Please contact AE
Techron
Application Support
for information on
these more complex multi-amp systems.
6.3.1 Accessories for Multiamp Systems
For routine, controlled-voltage applications ,
Series or Parallel amplifier systems can be config
-
ured using the following accessories available from
AE Techron:
SIM-OPTOC
– The SIM-BNC-OPTOC Specialized
Input Module allows multiple 7224 or 7226 ampli-
fiers to be configured as a series output system to
increase the available output voltage to the load.
The SIM-BNC-OPTOC kit also includes a BNC
connector safety cover.
The SIM-BNC-OPTOC module is required for all
Series configurations and should be used in con
-
junction with the DB9M CABLE (see below).
DB9M CABLE
– The DB9M (OPTOC) CABLE is a
high-voltage Interlock cable that provides superior
insulation for multi-amp series systems running
high-voltage applications.
The DB9M CABLE is required for all Series con
-
figurations and should be used in conjunction with
the SIM-BNC-OPTOC module (see above)
7224/7226 BALLAST RESISTOR KIT
– Ballast
resistors are required for all Parallel configurations.
The ballast resistor kits include one ballast resistor
ith connection terminals and mounting hardware.
The 7224/7226 BALLAST RESISTOR KIT also
contains the shunt required to defeat the ampli
-
fier’s external level control.
PARALLEL WIRING KITS
– Three types avail
-
able: 7224/7226 2-AMP, 7224/7226 3-AMP, and
7224/7226 4-AMP. Parallel wiring kits include the
DB-25 Interlock cable for system communica
-
tion, BNC T-connectors and BNC patch cables
for wiring parallel inputs through the BNC input
connectors, and the output wiring for connecting
system amplifiers to the load. The kits also include
the wire(s) needed for wiring the parallel inputs
through the Removable Barrier Block (WECO)
connectors and the .input terminators required dur
-
ing system setup. Parallel wiring kits are recom
-
mended for all Parallel configurations.
6.3.2
Multiamp System Configuration
The AE Techron
7000-Series Multi-Amp
Configuration Guide
provides step-by-step instruc-
tions or for configuration and hookup of a multi-amp
system using 7224 or 7226 amplifiers. This guide
can be found on the USB drive included with the
amplifier and can also be downloaded from the AE
Techron website at
www.aetechron.com.
