The Ault Korea / Power General FLU3-40-6AD is a 40W open-frame switching power supply engineered for industrial and commercial applications requiring multiple isolated outputs. This triple-output unit accepts universal AC input (85–265 VAC) or universal DC input (100–370 VDC) with line frequency tolerance of 47–440 Hz, delivering stable regulated power across three independent channels. The supply incorporates soft-start, over-current power-limit, continuous short-circuit, and primary output over-voltage protection. Input transient protection via MOV and onboard fusing (recommended 2A/250V slow-blow) safeguard against upstream disturbances.
## Technical Specifications
**Input & Protection**
• Universal AC: 85–265 VAC, 47–440 Hz
• Universal DC: 100–370 VDC
• Input line protection: MOV transient suppression, onboard fuse
• EMI filter exceeds EN55022/FCC Class B conducted limits by 10 dB typical
**Output Performance**
• Triple DC outputs; Output 1 & 2 rated 15V (ISO) at 0.30A nominal, 0.50A maximum
• Peak current ratings: 5.0A, 3.0A, and 2.0A (<60 seconds, <10% duty cycle)
• Line regulation: 0.5% typical; Load regulation: 1.0% typical; Cross regulation: 1.0% typical
• Voltage tolerance: 4.0% typical
• Output ripple and noise: 1% peak-to-peak maximum
• Efficiency: 62–75% typical at nominal input and load
• Hold-up time: 16 ms (115 VAC), 32 ms (230 VAC) minimum at full load
**Thermal**
• Operating range: −20°C to +70°C
• Cooling: Convection adequate; forced air recommended in confined spaces
• De-rating: 2%/°C linear from +50°C to +70°C
• Temperature coefficient: ±0.05%/°C across operating range
## Key Features
• Soft-start circuit reduces inrush current and stress on input components
• Continuous short-circuit protection on all outputs
• Dual input acceptance (AC and universal DC) eliminates supply compatibility concerns
• Over-current power-limit preserves load integrity during transient conditions
• Low output ripple (1% pk-pk max) suitable for noise-sensitive analog circuits
## Typical Applications
Industrial control systems, distributed power architectures, multi-rail embedded systems, laboratory instrumentation, and OEM equipment requiring isolated triple outputs with universal input flexibility.
## Compatibility & Integration
The FLU3-40-6AD integrates into open-frame installations where space permits convection cooling. Convection operation is standard; forced-air cooling extends thermal margin in restricted enclosures. Triple isolated outputs enable independent load regulation without cross-rail coupling.
