IR-183 Intracellular Recording Amplifier

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Cygnus Technology offers two versions of the NeuroData current clamp amplifier, a single and a two channel version. The electronics are identical except that the dye injection feature is shared on the two channel model and the IR-283 includes cross decoupling circuitry between the two channels to help eliminate artifacts caused by common ground impedances and capacitive coupling in double barrel electrodes.

Both models feature a three way cell penetration system consisting of an AC induced oscillation mode, a constant current pulse , and a high voltage pulse mode. Control is provided for intensity, duration, and polarity (except AC). The instruments are supplied with both a hand held and a foot operated switch for activation. The headstage incorporates a break out relay which grounds the input remotely or when power is off to prevent damage and to allow direct access to the electrode from an auxiliary input.

Intracellular Recording Amplifier Technical Specifications

Bridge Balance:

  • up to 500 M ohm


  • 1 and x10 switch, max +/- 100 nA


  • max +/- 1000 mV

Capacitance Neutralizer:

  • fine and coarse

Dye Injection System:

  • max 50 nA, 200 ms on, 200 ms off

Electrode Decoupler:

  • IR-283 only

Cell penetration system

  • 3 different modes, buzz, HV, current pulse

Oscilloscope beam finder

  • LEDs indicate V output offset direction

Input Impedance:

  • 1000 Gigaohm

Headstage Cable Length:

  • 8 feet standard


  • Both a Hand and foot switch included


  • 1202/240 V 50/60 Hz at 3/8 amp user selectable


  • IR-183: 19 in. wide x 5 in. high x 9 in. deep
    IR-283: 19 in. wide X 7 in. high x 9 in. deep

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