共 50 条
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- [2] SIMPLE DC AMPLIFIER FOR MEASURING VERY SMALL CURRENTS JOURNAL OF SCIENTIFIC INSTRUMENTS, 1959, 36 (09): : 410 - 411
- [4] LOGARITHMIC AMPLIFIER FOR SMALL CURRENTS INSTRUMENTS AND EXPERIMENTAL TECHNIQUES-USSR, 1970, (06): : 1678 - &
- [5] TRANSISTOR AMPLIFIER FOR MEASURING WEAK DC CURRENTS INSTRUMENTS AND EXPERIMENTAL TECHNIQUES-USSR, 1969, (03): : 684 - +
- [6] LOGARITHMIC AMPLIFIER OF SMALL DIRECT CURRENTS MEASUREMENT TECHNIQUES-USSR, 1971, 14 (01): : 74 - +
- [7] A resistance-coupled amplifier for measuring ionization currents BUREAU OF STANDARDS JOURNAL OF RESEARCH, 1933, 10 (05): : 583 - 589
- [8] MEASURING SMALL CURRENTS WITH OPERATIONAL AMPLIFIERS INSTRUMENTS & CONTROL SYSTEMS, 1971, 44 (04): : 15 - &
- [10] GALVANOMETER FOR MEASURING VERY SMALL CURRENTS MEASUREMENT TECHNIQUES-USSR, 1969, (10): : 1414 - &