495 Power Supply

ORTEC 495 Power Supply• Adds +6 V or –6 V to existing NIM bin
• 6-A output
• Adjustable from 5 to 6 volts
• Over-voltage crowbar protection
• Foldback current limiting

The ORTEC Model 495 Power Supply is a single-width NIM module that adds 6 V to existing NIM-bin/power supply combinations. The Model 495 takes power from the 117 V ac bus on the bin and energizes either the +6 V or –6 V bus, depending on the internal polarity selection. Front-panel LEDs indicate which output polarity is active. The Model 495 is factory shipped in the +6 V output condition. In the event the Model 495 is inserted into a bin that already has ±6 V outputs, no damage will occur to any instrument. The Model 495 will indicate the presence of both outputs on the front panel.

Switching conversion circuits give the Model 495 high efficiency and cool operating temperatures, and the input and output circuits are filtered for very low noise.

Protection circuits include an input line fuse and filter, an output over-voltage crowbar, and foldback current limiting. Polarity selection is accomplished by printed wiring board (PWB) jumpers without the need for special keys or tools.
  • Literature +

  • Specifications +

    103–130 V ac, 47–63 Hz, 0.95 A maximum input current for 6-A output current. (NOTE: Maximum input current may exceed the capacity of some NIM bin power supplies, necessitating operation at reduced output current.)
    Outputs +6 V or –6 V (adjustable from 5 to 6 V) at 0–6 A (polarity PWB selectable).
    Regulation and Instability <±0.1% for specified line and load ranges.
    Operating Temperature Range 0 to +60°C.
    Noise and Ripple <30 mV peak-to-peak at 20-MHz bandwidth.
    Output Impedance <0.12 Ω for f <100 kHz.
    Recovery Time <2 ms to within ±1% after full-load to no-load, or vice versa.
    Turn On, Turn Off Transients <5% of nominal output.
    Protection • Over-Voltage  Accomplished with latching crowbar set to 6.8 V ± 0.5 V.
    • Short-Circuit and Overload  Accomplished with automatic recovery after fault removal. Also included are Fused Input and Input Line Filter protection.
    Net  1.2 kg (2.7 lb).    Shipping  2.7 kg (6.1 lb).
    Dimensions NIM-standard single-width module 3.43 X 22.13 cm (1.35 X 8.714 in.) per DOE/ER-0457T.
  • Ordering Information +

    Model Description
    495 Power Supply