Digitimer DS3 Isolated Constant Current Stimulator

Brief pulses of electricity are used in various biomedical research applications as a stimulus to excite nerve or muscle fibers. Several factors need to be considered when choosing the right stimulator.

The DS3 provides a precise Constant Current stimulus (up to 32mA) controllable in Pulse Duration and Amplitude and as with the DS2A this output comes from self-contained batteries. 

The DS3 also features a "clamp" or discharge circuit which discharges the output between stimuli, preventing a charge build up on the preparation.  In other constant current devices this charge build up can lead to a loss of stimulus.  The DS3 can be triggered by an external device such as our new DG2A Train/Delay Generator.  

NOTE: This stimulator is NOT approved for use on human subjects.

Constant Current Stimulator

• Four current ranges allow precise control of output between 2µA and 32mA.
•  Output discharge (Clamp) circuit prevents capacitance build-up during stimulus trains, which is important to prevent stimulus loss.
• 90v compliance provided.



Featuring

• Accurate and reproducible stimulus characteristics.
• Switchable polarity, variable output and duration ranges (20µs to 2s).
• External pulse duration control through the BNC trigger input.
• A single-shot button, which operates irrespective of trigger inputs.
•Cases manufactured from insulating material may be rack mounted using an optional mounting frame (Model D121-11) available from Digitimer Ltd.