Show simple item record

dc.contributor.advisorKarunasiri, Gamani
dc.contributor.advisorAlves, Fabio
dc.contributor.authorChang, Wing Chien Christopher
dc.dateDec-14
dc.date.accessioned2015-02-18T00:17:22Z
dc.date.available2015-02-18T00:17:22Z
dc.date.issued2014-12
dc.identifier.urihttp://hdl.handle.net/10945/44535
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractA commercial off-the-shelf silicon controlled rectifier (SCR) was connected in series with a parallel RC load under DC bias to produce self-terminating voltage pulses. The physics underlying the switching mechanism of the SCR in such a circuit was investigated and the values of load resistance and capacitance varied to ascertain their role on the pulse-generating capability of the circuit. When pulsing was successfully achieved, a reverse recovery current was always present to return the SCR from its on state to its off state. In addition, the regenerative process responsible for turning the SCR is through the avalanche multiplication of charge carriers within the device. This appeared to be independent of the mode of triggering, either by increasing the DC bias or using a current at the gate. Significantly, pulsing was discovered to be sustainable for a specific range of RC values that depends on the SCR’s intrinsic turn-off time. Specifically, it was found that without making modifications to the SCR itself, the minimum dead time achievable between pulses was essentially the turn-off time of the SCR. The findings of the research will help to design optimum SCR-based circuits for pulse mode detection of light and ionizing radiation without external amplification circuitry.en_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owner.en_US
dc.titleOperational characteristics of an SCR-based pulse generating circuiten_US
dc.typeThesisen_US
dc.contributor.departmentPhysics
dc.subject.authorsilicon controlled rectifieren_US
dc.subject.authorpulse generation circuiten_US
dc.subject.authorsemiconductorsen_US
dc.subject.authorsolid-state radiation detectorsen_US
dc.description.recognitionOutstanding Thesisen_US
dc.description.serviceMajor, Republic of Singapore Navyen_US
etd.thesisdegree.nameMaster of Science in Combat Systems Technologyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineCombat Systems Technologyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record