1900 Impedance Matching Transformer

The model 1900 low-noise impedance matching transformer is a versatile device for matching sources with impedances in the range from less than 50 m Ω to greater than 500 Ω to measuring instruments with high input impedance and offers two turns ratios of 1:100 or 1:1000. The frequency response depends on both the turns ratio and the source impedance, but under optimum conditions will be essentially flat from below 0.1 Hz to above 2 kHz.
The unit is supplied with a special low-noise double-screened coaxial cable fitted with two BNC plugs to connect its output to the following instrument.
  • Specifications +


    General Precision signal transformer with adjustable turns ratio mounted in a mu-metal case. Signal input and output connections via BNC connectors.
    Inputs/Outputs
    1:100 or 1:1000 selected by front-panel 
    BNC connector
    Mounting Free-standing fully shielded metal case
    General Demensions (excluding connectors)
    3" wide x 5.8" deep x 3" high (76 mm wide x 147 mm deep x 76 mm high)
    Shipping Weight 5 lbs (2.3 kg)