| 摘要 |
1296292 Measuring pulse width INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [30 April 1970] 26435/71 Heading G1U [Also in Division G4] In a pulse width measuring arrangement the control voltage (44) applied to a controllable single shot 42 is adjusted by a feedback loop to make the width of the single shot output pulse equal to the width of the input pulse (40), the control voltage then providing a measure of this latter pulse width. The leading edge of the input pulse 40 triggers the single shot 42. The single shot output 46 and the input 40 after inversion are fed to an AND gate 50, the resulting output pulses being fed to the inverting input of an integrator 56. Similarly the signal 40 and the signal 46 after inversion are fed to an AND gate 53, the output of which is fed to the non inverting input of integrator 56. The integrator output controls the single shot and is also fed to a display screen. By inhibiting either gate 53 or gate 55 the output may be made to track minimum or maximum signals respectively. |
