The Solar-Electronics Company 6552-1A is a 100-watt solid-state audio amplifier engineered for conducted audio frequency susceptibility testing per MIL-STD-461A/462. This unit delivers precise, low-distortion output across a wide frequency range with minimal input impedance and integrated protection against transients, back EMF, overload, and overdrive conditions.
– Technical Specifications
• Output Power: 100 W at 1 kHz into 2.4 Ω
• Frequency Range: 10 Hz to 100 kHz with flat response within 1 dB from 30 Hz to 100 kHz at reduced power; -3 dB points at 25 Hz and 120 kHz (using 6220-1A transformer loaded with 0.6 Ω)
• Input Impedance: 500–600 Ω
• Output Impedance: 2.4 Ω
• Output Voltage: 16 V rms at 1 kHz into 2.4 Ω (non-inductive); 7.7 V rms into 0.6 Ω at transformer secondary
• Input Voltage for Maximum Power: Approximately 0.6 V at 1 kHz
• Power Supply: 115 V, 60 Hz, 4.0 A or 230 V, 50 Hz, 2.0 A
• Fuses: Two 5 A line fuses, one 5 A DC supply fuse, one 6 A output overload fuse
• Dimensions: 8.12″ × 9″ × 14.62″ (20.64 cm × 22.86 cm × 37.15 cm)
– Key Features
• Solid-state architecture with no output transformer
• Low input impedance for direct signal coupling
• Panel-mounted gain control for input level adjustment
• Input and output protection circuits against transients, back EMF, overload, and overdrive
• Three-way binding posts (0.75″ spacing) for input and output connections
• Lightweight, portable design
– Typical Applications
Conducted audio frequency susceptibility testing for electromagnetic compatibility verification, including MIL-STD-461A/462 compliance.
– Compatibility & Integration
Designed for use with Type 6220-1A Audio Isolation Transformer for series injection into test sample power. Optional impedance matching (Type 7033-1 transformer to 50 Ω), isolation transformers (Type 7032-1), and precision current measurement resistors (Type 8415-1, 0.001 Ω, 100 A) are available.
Note: This model was discontinued by the manufacturer as of March 2015.
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