SR100 Estélas Low-Noise Power Supply


  • 42HP/3U desktop case
  • 230V or 115V AC input
  • Chassis isolated outputs
    • +5V/3A
    • +15V/1.5A
    • -15V/1.5A
    • +24V/1A (optional)
  • High control accuracy – low residual ripple
  • Linear control – low EMI
  • High reliability
  • Ultra-low voltage noise
    • density  ≤ 3 nV/√Hz
    • ripple  ≤ 1mV RMS
  • Contact Sisyph



The SR100 Estélas is a low-noise power supply providing ±15V and +5V and optionally +24V. The SR100 was first designed to provide a quiet environment to operate our ultra-low noise laser current source (SMC-Series). For this purpose, three SPS20 Cagire modules are assembled in a 3U desktop case to power up to 2 complete laser diode controllers and their dedicated laser frequency control electronics (SMA– and SMB-Series). Because they have little to no ability to reject supply variations, many RF subsystems should also benefit from the low-noise features of the SR100 Estélas to prevent unwanted side bands and low signal-to-noise ratio.

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