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 Electro 705 Intracellular Amplifier
  WPI's quietest intracellular amplifier  


Remote Headstage — Easily mounted in any manipulator, this small probe, containing the first stage of amplification, includes a microelectrode holder, which plugs directly into the probe input.
Battery Power— Four 9V alkaline batteries (included) power the Electro 705 for approximately 500 hours giving a super clean low noise source of power making the Electro 705 the quietest amplifier available. Batteries can be easily tested by the press of a button.
Capacitance Compensation— Corrects for loss of rise time caused by the presence of electrode capacity. Up to 50 pF of electrode shunt capacity may be neutralized.
 

Driven Guard Shield — Stray capacitance can be further reduced by placing the driven guard shield (included) over the microelectrode holder at the input end of the probe.
Tickler Circuit — A momentary oscillation that helps achieve cell penetration.
Electrode Resistance Test — The 705 provides a 1 nA electrode test current. Electrode resistance is monitored at the 1X output as a voltage (1 mV/M).
Probe Test Port — Allows the convenience of testing the amplifier's intrinsic noise and gain without cumbersome external test hookups. Gate leakage current can also be adjusted with minimum effort.
Baseline Position Control — Adds or subtracts up to 300 mV to the headstage output, allowing artefact voltages such as liquid junction potentials to be nulled prior to recording.
Differential Output — Two Electro 705s can be connected in tandem to create an optional differential amplifier probe system.
     
 

 

ELECTRO 705 SPECIFICATIONS
INPUT IMPEDANCE 1012 Ohms, shunted by 1 pF
OUTPUT IMPEDANCE 100 Ohms, both outputs
GAIN X1: ±0.1%
INPUT VOLTAGE RANGE ±5 V
RISETIME 15 µs, 10-90%
NOISE LEVEL 500 µV peak-to-peak*
INPUT CAPACITANCE COMPENSATION 0-50 pF
GATE LEAKAGE CURRENT ±10 pA, adjustable to zero
ELECTRODE RESISTANCE TEST 1 mV/ M Ohms
DC POSITIONING ± 300 mV
COMMON MODE REJECTION >104 (in differential mode)
POWER Four 9V alkaline batteries, supplied
DIMENSIONS 8.5 x 3.5 x 2.2 in. (22 x 9 x 6 cm)
SHIPPING WEIGHT 5 lb (2.3 kg)
* Wide band, with 20 M Ohms source

MODELS

705 Electro 705 Electrometer Add to Quote Basket
Probe, driven guard shield and micropipette holder MEH1SF included for glass microelectrodes O.D. 1.0 mm, 1.2 mm, 1.5 mm, or 2.0 mm.
Optional Accessories
3468 Dual Rack Mount Kit Add to Quote Basket
3469 Single Rack Mount Kit Add to Quote Basket
M3301 Micromanipulator (specify left- or right-handed) Add to Quote Basket
M-3  80° Tilting base Add to Quote Basket
RC1T Reference cell (Ag/AgCl) Add to Quote Basket
705PF Replacement probe (includes calibration)* Add to Quote Basket
2541 Driven guard shield for 705PF Probe Add to Quote Basket
MEH1Sxx Microelectrode holder Add to Quote Basket
 
 Rack Mounts | Capillary Glass | Microelectrode Holders | Cables and Connectors | Manual 
                             Note that WPI Equipment is NOT Designed for Human Use

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