Description : Which one among the following components can not be developed within an "integrated circuit"? (1) Diode (2) Triode (3) Transformer (4) Transistor
Last Answer : (3) Transformer Explanation: Some components like transformers and inductors cannot be integrated into an IC except for very specialized high frequency applications. They have to be ... circuit boards as separate components and cannot be integrated into semiconductor based integrated circuits.
Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element
Last Answer : Answer: C
Description : Which one among the following components can not be developed within an “integrated circuit”? (1) Diode (2) Triode (3) Transformer (4) Transistor
Last Answer : Transformer
Description : What effect does transit time have on a conventional triode operated at uhf frequencies?
Last Answer : It causes the control grid to short to the cathode
Description : A triode amplifier similar to the one shown in figure 1-19 has an Ebb -conditions, 1.5 milliamperes of current conducts through the tube. What w
Last Answer : +275 volts
Description : Why the control grid of a triode amplifier is negatively biased?
Last Answer : To prevent them from drawing grid current.
Description : What component is used in a triode amplifier to convert variation in
Last Answer : A plate load resistor RL
Description : Who invented the triode ?
Last Answer : Scientist The Forest Triode discovers the triode.
Description : What is a vacuum triode ? What is a vacuum triode ?
Last Answer : A vacuum tube with three electrodes is called a triode.
Last Answer : The voltage gain of triode depends on plate voltage.
Description : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?
Last Answer : Short time constant.
Description : What is the condition of the diode in a series limiter when an output is developed? In a parallel limiter?
Last Answer : Conducting, cutoff.
Description : In the tunnel diode, the tunneling current is at what level when the forbidden gap of the N-type material is at the same energy level as the empty states of the P-type material?
Last Answer : Minimum.
Description : Why is electron flow with the arrow in the symbol of a Zener diode instead of against the arrow as it is in a normal diode?
Last Answer : Because Zener diodes are operated in the reverse bias mode.
Description : During avalanche effect breakdown, what limits current flow through the diode?
Last Answer : an external current-limiting resistor
Description : What is the doping level of an avalanche effect diode when compared to the doping level of a Zener-effect diode?
Last Answer : The doping level of an avalanche effect diode is lower.
Description : What is the name of the simplest type of rectifier which uses one diode?
Last Answer : The half-wave rectifier.
Description : When checking a diode with an ohmmeter, what is indicated by two high resistance measurements?
Last Answer : The diode is open or has a high-forward resistance.
Description : What is the greatest threat to a diode?
Last Answer : Heat.
Description : What type of diode has orange, blue, and gray bands?
Last Answer : 1N368.
Description : What is meant by diode ratings?
Last Answer : They are the limiting values of operating conditions outside which operations could cause diode damage.
Description : What is used to show how diode parameters vary over a full operating range?
Last Answer : A characteristic curve.
Description : What type of bias makes a diode act as a closed switch?
Last Answer : Forward bias.
Description : What type of PN diode is formed by using a fine metal wire and a section of N-type semiconductor material?
Last Answer : Point-contact.
Description : In reference to the schematic symbol for a diode, do electrons flow toward or away from the arrow?
Last Answer : Toward the arrow.
Description : What is the purpose of a PN junction diode?
Last Answer : To convert alternating current into direct current
Description : For a diode to act as a rectifier, should it be connected in series or parallel with the load?
Last Answer : Series.
Description : What term is used to describe the period when the diode is not conducting?
Last Answer : Cutoff.
Description : Describe the output of a laser diode.
Last Answer : The LD's output has a narrow spectral width and small output beam angle.
Description : Why would a laser diode be used in a low-data-rate digital application?
Last Answer : When extremely high transmitter output powers are required.
Description : Is the drive circuitry generally more complex for an LED or a laser diode? Why?
Last Answer : For a laser diode. The laser diode transmitter generally contains output power control circuitry and may contain a TE cooler and some circuitry associated with the TE cooler.
Description : What is the typical back-to-forward resistance ratio of a good-quality diode?
Last Answer : 10-to-1 ratio.
Description : At frequencies above 100 megahertz, the intrinsic (i) region causes a pin diode to act as what?
Last Answer : Variable resistance.
Description : What are the most important advantages of the Schottky barrier diode?
Last Answer : Lower forward resistance and low noise.
Description : What is the capacitive reactance across a point-contact diode as compared to a normal junction diode?
Last Answer : Lower.
Description : During the manufacture of a point-contact diode, what is the purpose of passing a relatively large current from the catwhisker to the silicon crystal?
Last Answer : . To form a small region of p-type material
Description : What causes dc bias energy to be absorbed by avalanche electrons and given up to the microwave field applied to an avalanche transit-time diode?
Last Answer : The negative-resistance property.
Description : What is the junction arrangement of the original avalanche transit-time diode?
Last Answer : Pnin.
Description : What limits the usefulness of high-gain, tunnel-diode frequency converters?
Last Answer : Stability problems.
Description : What is the purpose of the circulator in a tunnel-diode amplifier?
Last Answer : Prevent feedback to the tuned input circuit.
Description : Why is the tunnel diode loosely coupled to the cavity in a tunnel-diode oscillator?
Last Answer : To increase the stability.
Description : The pin diode is primarily used for what purpose?
Last Answer : A switching device.
Description : What determines the frequency of a tunnel-diode oscillator?
Last Answer : The tuned circuit or cavity frequency.
Description : A large negative voltage is applied to the plate of a diode, and a largewhat tube parameter has been exceeded?
Last Answer : Peak Inverse Voltage (PIV).
Description : An ac voltage is applied across a diode. The tube will conduct when
Last Answer : Positive.
Description : Before a diode will conduct, the cathode must be what polarity relative
Last Answer : Negative.
Description : Name the two series circuits that exist in a diode circuit.
Last Answer : Filament and plate.
Description : which components act as the filter network in the diode detector?
Last Answer : C1 and R1.
Description : How does the current-diode detector differ from the voltage-diode detector?
Last Answer : The current-diode detector is in parallel with the input and load.
Description : What is the function of the diode in a series-diode detector?
Last Answer : Rectifies the rf pulses in the received signal.