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High Current Stimulus Isolator
As low as
$2,224.00
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Prices valid in USA, Canada, and PR only.
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Price range: $2,224 - $2,637
Prices valid in USA, Canada, and PR only.
The A385 is an optically isolated current source, which can generate up to 100 mA of unipolar or biphasic constant current pulses or DC. Pulse duration is controlled manually or by an external 5V command. Output current amplitude is determined by a 3-digit 10-turn potentiometer. Maximum output voltage between the stimulating electrodes is +36V.
Prices valid in USA, Canada, and PR only.
Constant current stimulus isolator with 100 mA current range
- Constant current to 100 mA
- Unipolar or bipolar stimulation modes
- Built-in non-compliance alarm
- Input is optically isolated
- Standard TTL triggering
- DC test mode
- Powered by six rechargeable lead acid batteries
- 36V compliance
- Output polarity and output “on/off” switches
Options
Order code | Description | Battery Type | Includes Charger |
A385RC | A385R with an A382 Battery Charger | Rechargeable Battery | Yes |
SYS-A385R | High Current Isolator | Rechargeable Battery | No |
Benefits
- 100 mA current capability
- Bipolar mode automatically generates alternating positive and negative pulses from TTL input
- Test mode simplifies performance verification
- Optical isolation enhances safety of the preparation and reduces noise susceptibility
- Battery charge status LEDs keep the experimenter informed of battery status
- Charger included at discounted price when system is purchases as A385RC
Applications
- Muscle electrophysiology
- In vivo/in vitro muscle stimulation
The A385 is an optically isolated current source, which can generate up to 100 mA of unipolar or biphasic constant current pulses or DC. Pulse duration is controlled manually or by an external 5V command. Output current amplitude is determined by a 3-digit 10-turn potentiometer. Maximum output voltage between the stimulating electrodes is +36V.
Delivers positive, negative or bipolar currents
For bipolar delivery, the polarity of the output can be toggled to the opposite polarity state with each successive pulse presented to the input. Pulse duration is controlled by an externally applied voltage. The input connector is a standard BNC, allowing TTL signals from a data acquisition system to be used.
Excellent accuracy and repeatability
The output amplitude is controlled by a 3-digit, ten-turn dial as a percentage of the range selected: for example, a setting of 45.6 in the 0-10 mA range translates to 4.56 mA at the output. Accuracy and repeatability are excellent. Designed for subcutaneous stimulation, maximum output voltage at the stimulating electrodes is 36 volts, reducing the possibility of accidental transcutaneous shocks. A compliance/output alarm sounds when the 36V limit is reached. Internal circuitry ensures electrodes are short-circuited during inactive periods (“electrode exhauster” feature). The A385 is not appropriate for transcutaneous stimulation.
Rechargeable battery
The 1.2 amp-hour rating of the six heavy-duty lead-acid rechargeable batteries ensures that all day experiments will not be interrupted by dead batteries when charged daily. Indicator lights and audible alarms keep the user constantly apprised of the battery charge status. The batteries are recharged by the A382 System Charger, which is designed especially for the A385, and included with the A385RC.
NOTE: Not intended for human use.
SKU | VAR-2274 |
---|
OUTPUT WAVEFORM | DC or current pulse |
OUTPUT CURRENT RANGES | 1, 10, and 100 mA |
CURRENT AMPLITUDE ERROR | 0.5% of full scale, max. |
CURRENT RESOLUTION REPEATABILITY | 0.1% of full scale, typical |
OUTPUT LOAD VOLTAGE EXCURSION (COMPLIANCE) | 36 V |
EXTERNAL COMMAND VOLTAGE OUTPUT POLARITY CURRENT RISE TIME AND DELAY CURRENT FALL TIME AND DELAY OUTPUT TO GROUND RESISTANCE OPTOCOUPLER |
5 V at 3 mA minimum, 8.5 V maximum Reversible, manual switch or electronically switched bipolar delivery 6 μs, typical (1 KΩ load) 10 μs, typical (1 KΩ load) 1012 Ω 2500 V, rated minimum breakdown voltage |
POWER | Six rechargeable lead-acid batteries (Requires companion charger A382) |
DIMENSIONS | 8.5 x 3.5 x 5 in. (22 x 9 x 12 cm) |
SHIPPING WEIGHT | 5 lb. (2.3 kg) |
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