Extrel’s 150-QC RF/DC Power Supplies provide high precision and high stability control and power for our quadrupole mass filters, octupoles and hexapole ion guides. These power supplies are offered in both RF-only and RF/DC versions. Users can control the RF power, mass and resolution commands plus a pole bias voltage to adjust the centerline potential of the quadrupole.

The 150-QC RF/DC power supplies operate on a fixed RF frequency. The mass range and performance characteristics of the different size quadrupoles depend on the RF frequency of the power supply. The selection chart below shows the available RF frequencies and the maximum mass for each of our quadrupole mass filters.

For additional specifications and benefits of the Extrel 150-QC RF/DC Power Supplies, please review Application Notes:

• Collision Cell Efficiencies - ASMS 2005 - (GA-380)
• Optimizing Quad Transmission for Wide Mass Range - (GA-610)
• RF/DC and RF Only Power Supplies - (GP-201)
• Transmission of Ion Guides - (GT-715)

Mass range, sensitivity, resolution, abundance sensitivity and transmission are determined by the quadrupole rod size and RF operation frequency. Increasing the RF operating frequency increases the sensitivity, resolution abundance sensitivity and the high energy ion transmission. Increasing the quadrupole rod size increases ion transmission. Decreasing the quadrupole rod size or the RF operating frequency increases the mass range.

Extrel’s RF/DC power supplies offer our users the unique ability to change the mass range and performance of their quadrupole by changing the RF frequency of the power supply. Users may use one power supply with a number of different RF oscillators for different applications.

For additional specifications of the Extrel 150-QC RF/DC Power Supplies, please review Product Note: RF/DC and RF Only Power Supplies - (GP-201) or contact your local Sales Representative.