Atec AE-Techron-7796 User Manual
2 5 0 7 W a r r e n S t r e e t , El k h art, IN 46516 USA | 5 7 4 . 2 9 5 - 9 4 95 | www.AETechron. c o m
7796 SPECIFICATION SHEET
Features
Over 22,000 watts peak for 40 mSec and 8,000 watts peak
continuous into a 0.5-ohm load.
40 mSec pulses of up to 209 amperes peak into a 0.5-ohm
load.
System output of over 650 volts and 250 amperes maximum
are possible with multiple, interconnected amplifiers.
Frequency bandwidth of DC to 50 kHz at rated power, DC to
100 kHz at reduced power.
Rugged chassis for stand-alone or rack mounted operation. No
additional power supplies are required.
Protection circuitry protects the AE Techron 7796 from input
overloads, improper output connection (including shorted and
improper loads), over-temperature, over-current, and supply
voltages that are too high or low.
7796 with “P” option offers precision control of output offset,
DC drift and gain linearity.
Shipped ready to operate from 208-volt (±10%) three-phase AC
mains. Operation from 400-volt (±10%) AC mains are available
on request.
0
20
40
60
80
100
120
140
1 20 50 80 150 250
Volts RMS
Frequency in kHz
7796 Voltage Potential
8 ohm
4 ohm
2 ohm
1 ohm
The AE Techron 7796 amplifier is a
high-powered, DC-enabled unit
designed to provide clean, reliable
power for gradient coils in magnetic
resonance imaging systems or in
applications that require both
significant short-term (burst) and longterm (continuous) power. A single
7796 has an output capability of over
210 amperes peak at its rated voltage.
If more current is needed, up to four
amplifiers can be combined in parallel
and operate as a single system.
The 7796 can operate in either voltage
or current mode and features robust
output devices and a power range of
over 6600 watts RMS. It provides very
low noise and fast slew rates, and can
safely drive a wide range of resistive,
inductive loads.
Typical use includes as a selfcontained, general purpose amplifier
or combined into systems for doing
three-phase or high-current testing
required in ANSI-T1-315-2001 or MILSTD-704.
Performance
(Controlled Voltage Mode)
Note: Testing performed at 208V/415V AC.
7796 amplifiers can operate from 400V AC
±10%. Since these amplifiers have an
unregulated power supply, low line
conditions may slightly affect the maximum
voltage potential.
7796P accuracy was measured when driven
into a 10 ohm load with between 0.1VDC and
6VDC or between 0.2V AC and 5V AC
presented at its inputs.
Frequency Response:
DC – 30 kHz, +0.1, –0.5 dB
7796 Datasheet Information subject to change. 1/28/2013
AC Specifications
PEAK OUTPUT
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle
5 Minute,
100% Duty Cycle
1 Hour,
100% Duty Cycle
5 Minute,
100% Duty Cycle
1 Hour,
100% Duty Cycle
Ohms
Volts
Amps
Volts
Amps
Volts
Amps
Volts
Amps
Volts
Amps
Watts
Open
181 0 181 0 181 0 128 0 128 0 0
16
159
12
159
10
159
10
112 7 112 7 795 8 159
19
154
19
154
19
109
13
109
13
1483 4 158
39
152
38
152
38
107
27
107
27
2887 2 157
79
141
71
100
50
5004
1.5
148
99
71
71
50
50
2509 1 140
140
71
71
50
50
2509
0.5
106
209
63
127
45
90
3999
0.25
53
209
Note: Performance levels typical up to 20 kHz frequency levels. Above 20 kHz, slew rate may affect performance, reducing
maximum voltage, current and power output.
8 ohm Power Response:
0
20
40
60
80
100
120
140
0 3 6 9 12 15 18 21 24
Degrees C
Minutes
7796 DC Power
Thermal Limit
43 Volts 60 Amps
60 Volts 60 Amps
0
20
40
60
80
100
120
140
0 5 10 15 20 25 30 35 40 45 50
Degree C
Time in Minutes
7796 Temperature Over Time
Thermal
Limit
DC-50 kHz: ± 150 Vpk
DC-150 kHz: ± 50 Vpk
DC-200 kHz: ± 25 Vpk
Maximum Continuous Output Power:
6600 watts RMS
Slew Rate:
41 V/μSec
Phase Response:
±8.3 degrees (10 Hz – 10 kHz)
Phase Error:
±0.1 degrees at 60 Hz
Maximum Continuous Output
Power:
6600 watts RMS
Output Offset:
7796: Less than 5 mV, field adjustable
to less than 1 mV
Unit to Unit Phase Error:
±0.1 degrees at 60Hz
Output Offset:
7796: Less than 5 mV, field adjustable
to less than 1 mV
7796P: Less than 200 V
Output Offset Current:
Less than 10 milliamperes DC
7796 Datasheet Information subject to change. 1/28/2013
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