7224

Up to 50 Ap/158 Vp, DC to 1 MHz, Single-Phase

7224

900VA, single-phase, 2U, industrial amplifier/battery simulator

Field-selectable controlled-voltage or controlled-current operation
Can be switched between rail supply modes and voltages to optimize for various load impedances
Protection circuits guard against over/under voltage, over current, over temperature, and circulating ground currents

Key Performance Capabilities:

Up to 900 watts RMS power output
Provides rated long-term power at frequencies up to 40 kHz
Small signal response up to 1 MHz
Up to 16A at 13.5 VDC
Can be used to create series or parallel systems for up to 3 times the voltage or 4 times the current output

SKU: N/A Category: Amplifiers

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OVERVIEW

The 7224 is a 4-quadrant power amplifier that offers the features of larger industrial amplifiers in a smaller 2U size that runs from single phase 120/230VAC. It features DC – 400 kHz bandwidth, controlled-current or controlled-voltage modes of operation and has a wide range of field-configurable options.

The 7224’s configurability and flexibility have made it the choice of many research and university labs. It can be field-configured to run well into loads from 100 ohms to as low as 0.5 ohms. Even with its small bench top size, the 7224 is able to produce as much as 50 amps of current and as much as 158 volts, providing serious power for a wide range of applications and experiments. With its 90V/µS slew rate, it is able to accurately reproduce wave forms from DC to above 400 kHz, making it a great choice for high-speed control applications. With its ability to operate in either Controlled-Voltage or Controlled-Current modes, it has been used in Small Bore MRI and NMR systems, testing of switch-mode power supply components, and driving Helmholtz coils.

OUTPUT CHART

AC Output

Note: Numbers provided are preliminary. Testing performed into resistive loads as specified. Performance reported is typical into the specified load up to 40 kHz frequency levels. Performance may be affected when operating into highly reactive loads or above 20 kHz, reducing maximum voltage, current and power output. *Testing not performed. **Maximum 45 minutes of continuous operation.

High-voltage Mode

	PEAK OUTPUT						RMS OUTPUT
	40mSec Pulse, 30% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle
Ohms	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Watts
16	158	9.8	158	9.8	158	9.8	112	6.9	112	6.9	773
8	154	19	136	16	120**	15**	96	11.5	85**	10.6**	900**
4	124	47	108	25.7	61	14.5	76	18.2	43	10.3	443
2	98	49	*	*	*	*	*	*	*	*	*

Mid-level Mode

	PEAK OUTPUT						RMS OUTPUT
	40mSec Pulse, 30% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle
Ohms	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Watts
4	72	18	69	16.4	69	16.4	49	12	49	12	568
2	61	30	57	26.2	57	26.2	40	18.5	40	18.5	740
1	47	47	43	39.6	21	21	30	28	15	14.8	222
0.5	26	52	*	*	*	*	*	*	*	*	*

High-current Mode

	PEAK OUTPUT						RMS OUTPUT
	40mSec Pulse, 30% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle
Ohms	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Watts
1	*	*	29	29	29	29	21	21	20.5	20.5	420
0.75	*	*	26	34	26	34	18	24	18	24	432
0.5	*	*	22.7	45	22.7	45	16	32	16	32	512

DC Output

Note: Testing performed in high-current mode.

	OUTPUT (Amperes)
Volts DC	100 mS Surge	5 Min, 100% Duty Cycle	1 Hr, 100% Duty Cycle
13.5	50	20	16
24.0	45	26	20
48	40	12	12

PERFORMANCE

SPECIFICATIONS

Performance Specifications

Testing Conditions: 100 Hz; DC power levels vary. Refer to DC Specifications chart.
Frequency Response (DC – 300 kHz at 1 watt):
- Range: +1.0 to -1.5 dB
8-Ohm Power Response (continuous duty):
- DC to 60 kHz: ± 140 Vpk
- DC to 200 kHz: ± 65 Vpk
- DC to 350 kHz: ± 45 Vpk
Slew Rate: 75 V/µSec
Residual Noise:
- 10 Hz to 300 kHz: 950 µV (0.95 mV)
- 10 Hz to 80 kHz: 300 µV (0.3 mV)
Signal-to-Noise Ratio:
- 10 Hz – 30 kHz: –113 dB
- 10 Hz – 80 kHz: –106.6 dB
- 10 Hz – 500 kHz: –99.9 dB
Unit to Unit Phase Error: ±0.1 degrees at 60 Hz
Total Harmonic Distortion (THD) (DC – 30 kHz): < 0.1%
DC Offset: < ±5 mV
DC Drift: < ±1.5mV
Output Impedance: 5.3 mOhm in Series with 0.95 µH
Phase Response (10 Hz – 10 kHz): ±5 degrees + 600 nsec propagation delay

Input Characteristics

Balanced Input with Ground:
- Connector: Three terminal barrier block
- Impedance: 20k ohm differential
Unbalanced Input:
- Connector: BNC
- Impedance: 10k ohm single ended
Gain:
- Voltage Mode: 20 volts/volt
- Current Mode: 5 amperes/volt
Gain Linearity: 0.15% over input signal (0.2V to 5V)
Max Input Voltage: ±10V, balanced or unbalanced

Status Display, Control, I/O

LED Displays: Ready, Standby, Fault, Over Temp, Over Voltage, Overload
Switches: Soft Touch for Run, Stop, Reset
Gain Control: Adjustable from 20 to 0 when enabled
On/Off Breaker
Power Connection: 25 Amp IEC with retention latch
Signal Output: Three-position terminal strip (OUTPUT/COM/CHASSIS GROUND)
Signal Input: User selectable BNC or Barrier Strip, Balanced or Unbalanced

Communication Capabilities

Current Monitor: 5A/V ± 1%; 2.5A/V ± 1% (differential configuration)
Reporting: System Fault, Over Temp, Over Voltage, Over Load
Remote Control: Interlock Connector for Blanking control, Force to Standby, Reset after a fault

Protection Features

Over/Under Voltage: ± 10% from specified supply voltage forces amplifier to Standby
Over Current: Breaker protection on main power and low voltage supplies
Over Temperature: Separate monitoring and protection for Output transistor, heat sink, and transformer

Physical Characteristics

Chassis:
- Design: Stand-alone or rack-mounted
- Material: Black aluminum with powder coat finish
- Size: Two EIA 19-inch-wide units
Weight:
- Unit: 41 lbs (18.6 kg)
- Shipping: 51 lbs (23.2 kg)
AC Power:
- Single phase, 120 VAC, 60 Hz, 20 Amp service
- Model: (220-240 VAC, 50-60 Hz, 10 Amp available)
Operating Temperature:
- Range: 10°C to 50°C (50°F to 122°F)
- Power de-rated above 30°C (86°F)
Humidity: 70% or less, non-condensing
Cooling: Forced air cooling with removable filters, airflow 180CFM
Dimensions:
- Height x Width x Depth: 3.5” x 19” x 22.75” (8.9 cm x 48.3 cm x 57.8 cm)