Intracellular Electrometer
The Intracellular Electrometer is a simple
to use, low cost intracellular amplifier. It comes equipped
with a small and light weight probe measuring 1.1cm in
diameter by 5.6cm long and weighing only 10 grams.
The dual-transient control provides extremely precise
adjustments to transient suppression during membrane
recordings. The DC balance control eliminates the need for
an external bridge or a differential input oscilloscope.
The DC offset provides electrode offset control up to ±1V.
An internal square-wave generator supplies a 100Hz current
pulse to determine electrode resistance. It is also useful
to adjust capacitance compensation. Capacity compensation can
adjust up to 35pF of electrode capacitance. Additional stray
capacitance can be reduced by using the driven shield connector
on the head stage probe.
The unit has an advanced capacitance "Ringer" control
for clearing electrode tips and enhancing the membrane
penetration of neurons. The Ringer's amplitude (0 - 10V biphasic)
and frequency (2 - 8kHz) of the pulsed oscillations sent to the
electrode can be adjusted on the front panel.
A six position low pass filter and a 60Hz notch filter are
available for the researcher to diminish extraneous frequencies
and external line noise.
The current injection system allows for both internally generated
current and externally generated current. This current can be set
for continuous or momentary injection. The sum of the current can
be gated by an external TTL logic signal source.
The small size of the amplifier and its remote power supply offers the
advantage of placing the amplifier near to the experimental set up.
For example, the amplifier can be placed within a Faraday cage with
minimal power-line interference.
ships complete with:
Includes small and lightweight headstage
Low Noise
High Input Impedance
Bias current adjustable to zero
DC balance with transient suppression circuity
Low-pass and line frequency Notch Filters
Ringer with adjustable amplitude and frequency
