The HP E3611A is a 30 W linear DC power supply engineered for laboratory and development work requiring stable, low-noise power delivery. Its dual-range architecture—0–20 VDC at 0–1.5 ADC or 0–35 VDC at 0–0.85 ADC—accommodates diverse load requirements from a single instrument. Front-panel range selection, 10-turn potentiometers for voltage and current adjustment, and separate digital meters enable precise, real-time monitoring and control.
Excellent regulation and transient response define its performance. Load regulation holds within 0.01% + 2 mV (voltage) and 0.01% + 1 mA (current) across the full operating range. Line regulation tracks the same tolerances over all input voltage conditions. Output ripple and noise remain below 200 µVrms and 2 mV peak-to-peak across 20 Hz to 20 MHz. Transient recovery takes less than 50 µs to stabilize within 10 mV following current step changes. Temperature stability is assured through a coefficient of 0.02% + 1 mV per °C (voltage) and 0.02% + 2 mA per °C (current).
Protection circuits include overvoltage shutdown and continuously acting constant-current limiting that safeguards against overloads and direct shorts. Remote sensing automatically corrects for voltage drop in load leads, ensuring accurate delivery at the device under test. Three isolated output terminals on the front panel permit either the positive or negative terminal to be grounded, with outputs floatable to 240 V from ground.
Digital metering offers 100 mV voltage resolution and 10 mA current resolution with ±0.5% + 2 counts accuracy at 25 °C ±5 °C. Output drift stabilizes to less than 0.1% + 5 mV (voltage) and 0.1% + 10 mA (current) after eight hours of operation following a 30-minute warm-up period.
Technical Specifications
• Output Power: 30 W maximum
• Range 1: 0–20 VDC, 0–1.5 ADC
• Range 2: 0–35 VDC, 0–0.85 ADC
• Load Regulation (CV/CC): <0.01% + 2 mV / <0.01% + 1 mA
• Line Regulation (CV/CC): <0.01% + 2 mV / <0.01% + 1 mA
• Ripple & Noise (20 Hz–20 MHz): ≤200 µVrms, ≤2 mV p–p
• Transient Response: <50 µs recovery to ±10 mV
• Output Drift (8 hr @ 30 min warm-up): <0.1% + 5 mV (V), <0.1% + 10 mA (I)
• Temperature Coefficient (CV/CC): <0.02% + 1 mV/°C, <0.02% + 2 mA/°C
• Voltage Resolution: 100 mV
• Current Resolution: 10 mA
• Meter Accuracy: ±0.5% + 2 counts @ 25 °C ±5 °C
– Key Features
• Selectable dual-range output via front-panel push button
• 10-turn potentiometers for fine voltage and current adjustment
• Separate digital panel meters for simultaneous V and I display
• Adjustable current limit without output shorting
• Overvoltage protection with automatic shutdown
• Constant-current limiting protects against all overloads and shorts
• Remote sensing compensates for load-lead voltage drop
• Three isolated output terminals with independent ground selection
• Outputs floatable to 240 V from ground
– Typical Applications
• Component and circuit testing
• Device characterization and validation
• Prototype development and debugging
• Educational laboratory work
– Compatibility & Integration
Three isolated front-panel output terminals accept either positive or negative terminal grounding. Remote sensing inputs accommodate standard load lead configurations. All control functions are accessible via front-panel interfaces.
