Kenosha Reuse Discussion Board > SOMERS, WI
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> Harvard apparatus stimulus isolation unit 508275
Harvard apparatus stimulus isolation unit 508275
Essential safety device for experiments involving AC-powered stimulators
Effectively isolates any stimulator having a minimum output of 12 volts
Available with positive or negative output pulses (this unit is positive)
This Isolation Unit makes true biphasic stimulation available to the researcher at a low cost when used in conjunction with the 50-6002 Harvard Apparatus Single Pulse Stimulator and 50-6012 Harvard Apparatus Single/Dual Pulse Stimulator. This self-contained, battery-powered Isolation Unit is constructed of plastic for additional isolation. The Unit s output faithfully reproduces the pulse shape characteristics of the driving stimulator, but is optically isolated from it. The output voltage is controlled by a 3 decade digital potentiometer providing a range from zero volts to approximately 96% battery supply voltage in steps of 0.1%.
In operation, the stimulator controls are set to the required pulse width and frequency. These factors are maintained independently of the stimulator voltage. The output of the stimulator is set to 12 volts. It is then connected to the Stimulus Isolation Unit. The output of this Isolation Unit is then set to the required voltage and connected to the appropriate electrodes.
(model number refers to a unit with 'positive' output pulses -
it is not known why face plate shows 'negative' output)
External Power Source: 12 to 100 VDC batteries
item is in good physical condition
