DAM50, DAM80 - Extracellular Amplifier

DAM50, DAM80 - Extracellular Amplifier

WPI’s DAM series amplifier’s are well known as a standard of the industry for extracellular potential amplification.

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  • Description

DAM50, DAM80 - Extracellular Amplifier

WPI’s DAM series amplifier’s are well known as a standard of the industry for extracellular potential amplification. These battery powered bio-amplifiers are designed with a compact chassis profile that enables you locate the unit closer to the preparation and thereby minimize long lead lengths which contribute to noise. Each amplifier is equipped with selectable high and low filters, and a position control to offset galvanic potentials which may develop during recording.

DAM series amplifiers can be used as stand-alone units on any tabletop or use optional clamp-mounting hardware to locate them conveniently within the work area. Alternatively, a pair of amplifiers can be mounted into a standard equipment rack with a rack mount kit (3484). A variety of hook up accessories are available to configure your application.

Reducing Noise with Differential Amplification

Differential amplification is of great importance in bioelectric recording to reduce the ever present effect of noise interference from power line induction. A well designed differential amplifier will significantly diminish power line (mains) noise. It is most essential that the preparation be connected with an electrode to a good electrical ground as well as to the grounding wire of the DAM50 itself. This should have the effect of greatly reducing electrostatically induced potential. In addition to the preparation ground, two differential input connections must be made via appropriate electrodes applied to the recording site so as to optimally record a bioelectric potential difference.

Benefits

  • Very low internal noise
  • Ultra quiet DC power supply ­— no AC required
  • Intrinsic low susceptibility to ground loops
  • Small footprint
  • Cost-effective
  • Electrostatic Discharge Protection!

Applications

  • Amplifying biopotentials from metal electrodes
  • Brain slice field stimulation
  • EAG (Electroantennogram)
  • ERG (Electroretinogram)
     

Feature Comparison Chart:

  DAM50 DAM80
Input Mode AC/DC AC
Input Configuration Differential/Single Ended Differential
Gain Range 100-10,000 (AC)
10-1,000 (DC)
100 - 10,000 (AC)
High/Low Filters Yes Yes
Offset Position Control Yes Yes
Current Generator No Yes
Remote Active Headstage No Yes
Output Connection BNC 3.5 mm mini phone
Standard Input Connection Unterminated wire Mini banana
Power Supply (2) 9V alkaline batteries (2) 9V alkaline batteries

More detailed information available: https://www.wpiinc.com/products/top-products/sys-dam50-dam50-extracellul...