Weak Current Amplifier
A high-performance benchtop low-noise current preamplifier designed for precise amplification and conditioning of extremely weak current signals in scientific, medical, and defense-grade measurement systems.
Key Features:
✔️Ultra-low self-noise down to 5 fA for high-sensitivity current measurements
✔️Wide DC to 1 MHz bandwidth with flat frequency response for fast signal capture
✔️Adjustable gain from 1 pA/V to ±1 mA/V with fine sensitivity control
✔️Independently adjustable bias voltage and bias current for flexible signal setup
✔️Supports AC/DC inputs with single-ended or differential input configurations
✔️Dual configurable signal filters with low-pass and band-pass options
✔️Signal inversion and TTL blanking improve measurement stability in noisy environments
✔️RS-232 control and built-in battery support laboratory and portable use
Weak Current Amplifier
Weak Current Amplifier LSPEC 4701 is a benchtop preamplifier engineered to detect and amplify femtoampere-level signals. This device measures 204.4mm x 88.4mm x 325.6mm and weighs 4.7kg including its integrated 18650 battery pack. The unit accepts AC or DC input configurations with both single-ended and differential modes. Input bias voltage adjusts across ±5V range while bias current spans ±1pA to ±1mA in controlled increments.
The amplifier delivers variable gain settings from ±1pA/V to ±1mA/V with 0.5% step resolution. Frequency response maintains ±0.5dB flatness from DC to 1MHz bandwidth. Self-noise performance reaches 5fA minimum, establishing low-noise floor for sensitive measurements. Two configurable 6dB/octave roll-off filters provide cutoff frequencies between 0.03 and 1.2MHz in 1-3-10 sequence. Output accuracy holds at ±(0.5% x output voltage + 10mV) at 25°C with ±5V maximum output under high impedance loads. RS232 interface operates at 9600 baud for digital control.
Defense laboratories employ the Weak Current Amplifier for electromagnetic signature detection in classified surveillance operations. Navy research facilities integrate these units into submarine communication receiver chains and underwater sensor arrays. Airforce testing centers utilize them for radar cross-section measurement systems and electronic warfare signal analysis. Photoelectric detection platforms in military reconnaissance equipment depend on this amplifier’s femtoampere sensitivity for target acquisition systems.
Tactical Supply Pakistan provides access to laboratory-grade instrumentation that supports advanced research and defense applications, ensuring technical professionals receive genuine equipment with complete domestic component integration for simplified maintenance protocols.
Does the built-in battery enable field operation without mains power?
Yes, the internal 18650 battery pack allows portable deployment in remote testing environments, though continuous high-gain operation may require the 220VAC 50Hz power supply for extended measurement campaigns.
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