The Ault Korea / Power General FLU3-40-1 is a 40 W open-frame switching power supply delivering triple regulated DC outputs for embedded systems and industrial electronics. It accepts universal AC input (85–265 VAC, 47–440 Hz) or DC input (100–370 VDC), with MOV-protected mains and on-board fusing. The unit provides +5 VDC @ 5 A, +12 VDC @ 3 A, and −12 VDC @ 0.7 A outputs, meeting continuous 40 W power delivery at typical efficiency of 62–75%. Protection includes power-limit overcurrent control, continuous short-circuit protection, and primary-output over-voltage clamping. Hold-up time exceeds 16 ms (115 VAC input) and 32 ms (230 VAC input) at full load. The design incorporates standard EMI filtering compliant with EN55022/FCC Class B conducted emissions. With 1% peak-to-peak ripple and noise, ±0.05°C/°C temperature coefficient, and 200,000 hour MTBF (MIL-HDBK-217F, ground benign, +25°C), the FLU3-40-1 suits OEM integration where compact form factor and multi-voltage rails are required.
## Technical Specifications
• **Input:** 85–265 VAC, 47–440 Hz or 100–370 VDC
• **Output Power:** 40 W maximum
• **Output Voltages:** +5 VDC @ 5 A, +12 VDC @ 3 A, −12 VDC @ 0.7 A
• **Efficiency:** 62–75% typical
• **Hold-Up Time:** 16 ms (115 VAC), 32 ms (230 VAC) at full load
• **Ripple & Noise:** 1% peak-to-peak maximum
• **Temperature Coefficient:** ±0.05%/°C
• **MTBF:** 200,000 hours (MIL-HDBK-217F, ground benign, TA = +25°C)
• **Input Fuse:** 2 A/250 V slow-blow (recommended replacement)
## Key Features
• Triple regulated outputs for mixed-voltage applications
• Universal AC and DC input acceptance
• Continuous short-circuit and overcurrent protection
• MOV transient suppression on mains input
• EMI filtering meets EN55022/FCC Class B
• Low ripple specification (1% peak-to-peak)
• 16–32 ms hold-up time across input range
## Typical Applications
• Industrial control and instrumentation
• Embedded system power distribution
• Multi-rail OEM integration
• Telecom and network equipment
## Compatibility & Integration
Open-frame configuration suits direct PCB mounting and confined enclosures. On-board fusing and transient protection reduce external component count. Outputs support standard load-share and voltage-sequencing topologies common in legacy and modern embedded designs.
