Accession Number : AD0694881

Title :   A DIFFERENTIAL D-C AMPLIFIER WITH VERY HIGH INPUT IMPEDANCE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Ch'en,Chun-Chiang ; Chang,Kuan-Hua ; Hu,Ch'i-Wei

Report Date : 21 MAY 1969

Pagination or Media Count : 17

Abstract : A new differential d-c amplifier was designed to be used in conjunction with microelectrode techniques to record the electrical activity of a single biological cell. The differential d-c amplifier consists of a differential cascade and a negative feedback circuit. Specifications of the amplifier are given. The new amplifier has high anti-interference ability, and has been extensively used in a biological laboratory for more than 3 years. Operating experience shows the new amplifier has excellent performance and high stability and is easy to operate.

Descriptors :   (*ELECTROPHYSIOLOGY, *AMPLIFIERS), DIRECT CURRENT, NERVE CELLS, VOLTAGE, MEASUREMENT, ELECTRICAL IMPEDANCE, CHINA

Subject Categories : Electrical and Electronic Equipment
      Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE