A395R Linear Stimulus Isolator Rechargeable

Features

All WPI stimulus isolators are designed to supply constant current because current threshold (not voltage) is the most quantitatively reproducible parameter for stimulation of nerve and muscle. Model A395 dispenses current reproducibly from its Output terminals; the amplitude being determined by the selected current RANGE and the input voltage. Current amplitude is “constant”, that is, load resistance independent, provided that the I x R (load) product does not exceed the available battery supply voltage. A visible indicator (the compliance alarm) will display if I x R reaches this limit.

Output current

Model A395 generates an output current of arbitrary (user-defined) wave shape; DC, AC, pulse, and combinations thereof. Battery operated, and photoelectrically-isolated from the input voltage drive, the instrument regenerates output currents which are linearly proportional to the analog voltage waveforms provided by your D/A converter or signal generator. The A395 is ideally suited for data acquisition and stimulator generators. It can be easily daisy-chained for mutiple channel requirements.

Current Delivery

A 10 V input produces the maximum output current for the current range selected. For example, 100µA, 1mA, or 10mA. Front panel controls allow DC current to be generated. Externally applied signals can be superimposed simultaneously (DC offset). Warning lamps indicate open circuit or excessive current conditions.

Digital Meter

Measures DC or average output current.

Overload Lamps

Indicate when output voltage has reached positive or negative compliance voltage limit.

 

Power

The rechargeable A395R is supplied with a nickel metal hydride battery stack. The A362 Battery Charger is required with the A395R. See A395RC, which includes both the A395R and the A362 battery charger .

OUTPUT CURRENT, Imax	3 ranges: 100μA, 1 mA, and 10 mA
OUTPUT VOLTAGE RANGE	± 70 V
OUTPUT BANDWIDTH	10 kHz (measured across 1KMΩ load R)
INPUT RESISTANCE	> 20 MMΩ
INPUT VOLTAGE @ Imax	± 10 volts
INPUT/OUTPUT LINEARITY ERROR	< 0.5%
RISE, FALL TIME	26 μs @ 10 KMΩ
POWER: Model A395D	17 alkaline 9 V batteries
POWER: Model A395R	17 rechargeable NiMH 9 V batteries
DIMENSIONS	6.5 x 4 x 3.5 in. (16 x 10 x 9 cm)
SHIPPING WEIGHT	4 lb (1.8 kg)

A395-IM-092608.pdf

E.D. Zonnevijille, N.N. Somia, g.Perez Abadia, R.W. Stremel, C.J. Maldonado, P.M.N. Werker, M. Kon, J.H. Barker "Sequential Segmental Neuromuscular Stimulation Reduces Fatigue and Imrproves Perfusion in dynamic Gracilolasty" Ann Plast Surg 45. 2000: 292-297

To place an order for this product, please contact the appropriate WPI office or distributor.

Customers from North America can order direct from our corporate office:
World Precision Instruments
175 Sarasota Center Boulevard
Sarasota, FL 34240-9258

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International customers, please see our office and distributor contact information list.

There are no accessories for this product.

No application notes are available for this product at this time.