NL800A Current Stimulus Isolator

NL800A Current Stimulus Isolator



  • Isolated constant current output for low noise.
  • Powered by standard GP23A batteries.
  • Four output ranges, providing 0-10mA output.
  • Use of two NL800A’s with NL512 Biphasic Buffer permits biphasic output.



The NL800A Current Stimulus Isolator from Digitimer is a battery powered, opto-coupled isolator (replacing the NL800), which has been designed for low noise applications such as in vitro and in vivo electrophysiology. It has a constant current output, with very high output impedance, making it suitable for stimulation through microelectrodes as well as with gross electrodes.

Normally driven from the NL510A or NL512 buffer modules, its output current is either set by the 10-turn control on the NL510A, within the output range set by the switch on the NL800A or by the amplitude of the voltage waveform applied to the NL512 (or directly to the NL800A).

Output pulses have the same timing as the input pulses (2 micro-seconds to 30 seconds output pulse width). The NL800A Current Stimulus Isolator is supplied with a set of 5 GP23A batteries, a pair of 1mm output plugs and heat shrink sleeving.

If you require further details about the NL800A, you can contact us by calling 01707 328347 or alternatively you can get in touch via email at

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Product Information

NL800A Current Stimulus Isolator

Publications which cite use of the Digitimer NeuroLog System can be found on Google Scholar.





  • 2x 1mm gold pins (NL970) plus 2x heatshrink insulation
  • One set of batteries is included


  • NL800A-BATT – Replacement batteries
  • NL970/10 – 1mm gold pins (pack of 10)
  • NL510A Pulse Buffer
  • NL512 Biphasic Buffer
  • NL951-xx Lemo Cable


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