boththeNPN&PNPtypebipolartransistorscanbemadetooperateasan"ON/OFF"typesolidstateswitchforcontrollinghighpowerdevicessuchasmotors,solenoidsorlamps.IfthecircuitusestheTransistorasaSwitch,thenthebiasingisarrangedtooperateintheoutputcharacteristicscurvesseenpreviouslyintheareasknownasthe"Saturation"and"Cut-off"regionsas...
The circuit is similar to that of the Common Emitter circuit. The difference is that we need to turn the transistor fully ON (saturated) or fully OFF (cut-off) to be able to operate it as a switch. An ideal transistor switch has infinite resistance between the Emitter and the Collector ...
On the other hand, when the transistor is used as a switch, it is operating in what is called the “digital” mode (on/off). In this state of operation, the transistor does not “amplify” the input voltage (VIN) in any way. To use a transistor as a switch, all you have to do...
TRANSISTOR PROTECTION CIRCUIT AND SWITCH CIRCUITPROBLEM TO BE SOLVED: To reliably protect a transistor operating as a switch circuit.OKUBO TAKUYA大久保 卓也
modes, active region, saturation region, and cut-off region. In the active region, the transistor works as an amplifier. As a transistor switch, it operates in two regions and those areSaturation Region(fully-ON) and theCut-off Region(fully-OFF). Thetransistor as a switch circuit diagramis...
Iftheloadisamotor,relayorsolenoid(oranyotherdevicewithacoil)adiodemustbeconnectedacrosstheloadtoprotectthetransistorfromthebriefhighvoltageproducedwhentheloadisswitchedoff.WhentoUseaRelay •TransistorscannotswitchACorhighvoltages(suchasmainselectricity)andtheyarenotusuallyagoodchoiceforswitchinglargecurrents(>5A)....
The switch circuit includes a first transistor device and a second transistor device. Both the first transistor device and the second transistor device have a load path and a control terminal. The load paths of the first transistor device and the second transistor device are connected in series....
of modern electronics. When working as an amplifier, a transistor transforms a small inputcurrentinto a bigger output current. As a switch, it can be in one of two distinct states -- on or off -- to control the flow of electronic signals through an electrical circuit or electronic device....
A circuit configuration for the switch-on/off control of a DMOS power transistor has at least one first gate electrode and, separate from the latter, a second gate electrode, which are capacitively coupled to one another by a capacitance distributed over the field-effect transistor and which can...
A transistor is a device that is used to regulate current and voltage flow in a circuit. It acts as a switch or gate for electronic signals. A transistor consists of three layers ofsemiconductor materiallike silicon or germanium from three terminals. When a current or voltage is applied to ...