共 50 条
- [2] A vacuum tube amplifier for small direct voltages JOURNAL OF THE FRANKLIN INSTITUTE, 1935, 219 : 137 - 155
- [3] A vacuum-tube circuit for measuring small alternating currents JOURNAL OF THE OPTICAL SOCIETY OF AMERICA AND REVIEW OF SCIENTIFIC INSTRUMENTS, 1929, 18 (01): : 58 - 61
- [4] SIMPLE DC AMPLIFIER FOR MEASURING VERY SMALL CURRENTS JOURNAL OF SCIENTIFIC INSTRUMENTS, 1959, 36 (09): : 410 - 411
- [5] MEASURING AMPLIFIER TO TRANSMIT HIGH VOLTAGES MEASUREMENT TECHNIQUES-USSR, 1968, (06): : 786 - &
- [10] Metrological Properties of a New System for Measuring the Mean Value of Very Low Frequency Alternating Voltages. Zeszyty Naukowe Politechniki Lodzkiej, Elektryka, 1979, (57): : 73 - 84