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Home Electrophysiology Products Stimulators Isolated Stimulators


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Isolated Stimulators

Many experiments in electrophysiology use a brief pulse of current as a stimulus to excite nerve or muscle fibers. It is desirable that the source of this E.M.F. should be isolated both from ground and from the timing generator used to release the stimulus. The DS2A and DS3 fulfill these requirements by using self contained batteries as the source of power and optical coupling is employed to isolate the stimulator from the trigger source.
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Item Listing Full Description Specifications Journal Articles Manuals
Item# Description
650329 DS2A Isolated Stimulator, Constant Voltage
650550 DS3 Isolated Stimulator, Constant Current Output
650337 D121-11 19 Inch Rack Mounting Frame, holds 2 DS2A/ DS3/DG2

For local pricing, contact your nearest distributor.



Full Description Back to Top

• Minimal interference with recordings
• No ground loops
• DS2A 100 V maximum at up to 50 mA
• DS3 2 µA - 32 mA from 90 Volts
• Battery powered energy saver circuitry

Many experiments in electrophysiology use a brief pulse of current as a stimulus to excite nerve or muscle fibers. It is desirable that the source of this E.M.F. should be isolated both from ground and from the timing generator used to release the stimulus. The DS2A and DS3 fulfill these requirements by using self contained batteries as the source of power and optical coupling is employed to isolate the stimulator from the trigger source. Precise timing of stimulus application can be controlled by a PC or other stimulus generating device such as the DG2 Trigger Generator. The duration of the stimulator output is adjustable over the range of 20 microseconds to two seconds by controls on the stimulators or can be the same as the applied trigger pulse.

Current is drawn from the batteries only and instruments have nonconductive enclosure. A single shot button is provided, which operates at all times irrespective of the trigger input.


Specifications Back to Top

Specifications650329650550650337
CertificationsCECE 
Max. Ouput99 V (High), 9 V (Low) selected by front panel switch; square wave pulse shape, typical rise99 V (High), 9 V (Low) selected by front panel switch; square wave pulse shape, typical rise 
VoltageTime < 1 µsec fall time < 3 µsec into resistive load  
Output ImpedanceDependent on position of amplitude control, 1.25 K max. at center position, 200 ? at ends of travel  
Trigger IsolationOptical coupling is employed between trigger source and stimulator circuitry; capacity coupling less than 3 pFOptical coupling is employed between trigger source and stimulator circuitry; capacity coupling less than 3 pF 
Single ShotSingle shot push button providedSingle shot push button provided 
BatteriesSelf contained batteries are used to provide isolated source of power; current is drawn only when delivering output pulse; max. current drain is 30 mA plus load currentSelf contained batteries are used to provide isolated source of power; current is drawn only when delivering output pulse; max. current drain is 30 mA plus load current 
Battery Type11 x PP3 - (IEC-6R61) style 9V batteries11 x PP3 - (IEC-6R61) style 9V batteries 
Height Metric110 mm110 mm 
Height English4.3 in4.3 in*na mm
Width Metric190 mm190 mm*na in
Width English7.5 in7.5 in*na mm
Depth Metric80 mm80 mm*na in
Depth English3.15 in3.15 in*na mm
Weight Metric800 g800 g*na in
Weight English28.2 oz28.2 oz*na g
Output Ranges 2 to 32 µA, 20 to 320 µA, 0.2 to 3.2 mA and 2 to 32 mA*na oz
Output Compliance*na V90 V 
Pulse Width ControlsTwo dials providing continuous adjustments over range 20 µsec to 2 sec, as well as selection of input pulse width
1) 6-Position Switch for pulse widths 10 µsec, 100 µsec, 1 msec, 10 msec, 100 msec with ±10% accuracy.
Two dials providing continuous adjustments over range 20 µsec to 2 sec, as well as selection of input pulse width
1) 6-Position Switch for pulse widths 10 µsec, 100 µsec, 1 msec, 10 msec, 100 msec with ±10% accuracy.
*na V

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Journal Articles Back to Top

Displaying 1 to 10 of 13results for Isolated Stimulators   Page 1  2 

Score

Document

Description

100% Login to view HS15 isolated heart app.pdf
[632 KB]
Isolated Heart Apparatus use in Myoglobin facilitating oxygen diffusion
48% Login to view VT01 2,3-Butanedione Monoxime Cardioplegia Advantages Over Hyperkalemia in Blood-Perfused Isolated Hearts.pdf
[199 KB]
2,3-Butanedione Monoxime Cardioplegia: Advantages Over Hyperkalemia in Blood-Perfused Isolated Hearts
28% Login to view HS15 Myoglobin facilitates oxygen diffusion.pdf
[631 KB]
Isolated Heart Apparatus use in Myoglobin facilitating oxygen diffusion
27% Login to view HS01 force transducer.pdf
[134 KB]
Force Transducer influence of opioids on the vascular tone of isolated porcine coronary artery segments
27% Login to view TD03UN 1.PDF
[122 KB]
Clarithromycin Inhibits Myometrial Contractions in Isolated Human Myometrium Independent of Stimulus with use of Oscillograph
25% Login to view HS03F3 1.PDF
[535 KB]
Force Displacemen Transducer, 5-hydroxytryptamine is a mediator of 4-aminopyridine induced contractions in porcine and human isolated coronary arteries
25% Login to view HS07EL 1.PDF
[162 KB]
Displacement Transducer use in Characterization of oxycotin actions in guinea-pig isolated uterin artery: The effect of pregnancy
25% Login to view HS02IS 1.PDF
[272 KB]
Isolated Organ Set use in Intraoperative and Laboratory Evaluation of Skeletonized Versus Pedicled Internal Thoracic Artery
21% Login to view HS04 latex balloon.pdf
[76 KB]
Latex Balloon use in finding Benefical Effect of Glucose on Short-Term, Perfusion-Pressure Induced Changes of Contractile Efficiency in Isolated Rabbit Hearts
16% Login to view HS18ST 1.PDF
[98 KB]
Influence of Pyruvate on Contractile Performance
   

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Manuals Back to Top

Displaying 1 to 1 of 1result for Isolated Stimulators  

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Document

Description

100% Login to view Isolated Preamplifier.pdf
[126 KB]
Isolated Preamplifier manual
   

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