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公开(公告)号：US3562649A
公开(公告)日：1971-02-09
申请号：US3562649D
申请日：1968-06-12
Applicant: US NAVY
Inventor： HOFFMAN ERIC J
CPC classification number: G04F10/00
Abstract: A PERIOD OF TIME MEASURED BY GENERATING A PLURALITY OF NOISE SIGNALS BY MEANS OF A PLURALITY OF INDEPENDENT WHITE GAUSSIAN NOISE GENERATORS, BY BAND-LIMITING EACH NOISE SIGNALS WITH SUITABLE FILTERS, BY SUMMING THE NOISE SIGNALS EMERGENT FROM SAID FILTERS, AND FINALLY BY AMPLITUDE-LIMITING THE SUN SIGNALS, THEREBY PRODUCING A SIGNAL
WHOSE AMPLITUDE AND NUMBER OF ZERO-CROSSINGS ARE BOTH INDEPENDENT OF THE NUMBER OF NOISE GENERATORS EMPLOYED. THE ELAPSED TIME IS MEASURED BY COUNTING THE ZERO CROSSINGS.-
公开(公告)号：US3604945A
公开(公告)日：1971-09-14
申请号：US3604945D
申请日：1968-11-05
Applicant: US NAVY
Inventor： HOFFMAN ERIC J , RHUE REGINALD M
Abstract: For a spacecraft command system, a tone decoder which distinguishes between binary zeros and ones. The circuit combines the operations of a differential amplifier, a threshold detector, a Schmitt trigger and a fast-reset integrator in a single circuit which uses fewer components than would be required if these operations were cascaded, as in the prior art.
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公开(公告)号：US3657555A
公开(公告)日：1972-04-18
申请号：US3657555D
申请日：1970-03-27
Applicant: US NAVY
Inventor： HOFFMAN ERIC J
CPC classification number: H03K3/53
Abstract: A passive generator that provides for the precise and repeatable generation of voltage transients. A portion of the supply voltage, as determined by a potentiometer, is applied to a first and second capacitor-resistor network. By closing associated first and second switches, the generation of either positive or negative voltage transients, having a variable amplitude and a definite time constant is accomplished.
Abstract translation: 无源发生器，用于精确和可重复地产生电压瞬变。 由电位器确定的电源电压的一部分被施加到第一和第二电容器电阻网络。 通过关闭相关的第一和第二开关，实现具有可变幅度和确定时间常数的正或负电压瞬变的产生。
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公开(公告)号：US3577013A
公开(公告)日：1971-05-04
申请号：US3577013D
申请日：1968-09-06
Applicant: US NAVY
Inventor： HOFFMAN ERIC J
CPC classification number: H03K3/284
Abstract: A monostable multivibrator circuit, or one-shot, which consumes virtually no power while in its standby state and having noncritical cutoff. Under quiescent conditions all circuit transistors are nonconductive and a circuit capacitor is fully charged. An input signal causes a first transistor to become conductive and thereby causes the capacitor to discharge exponentially from a negative potential toward a positive potential. The discharge time associated with the capacitor determines the on-time of the instant one-shot. Second and third transistors are connected into the circuit in such a manner that the circuit regeneratively turns on and degeneratively turns off. Further, the circuit is provided with means for preventing false triggering by voltage spikes from the power supply or from the load.
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