What component in a blocking oscillator controls pulse  width?

1 Answer

Answer :

Transformer.

Related questions

Description : What controls transmitter pulse width?

Last Answer : The modulator.

Description : What controls transmitter pulse width?

Last Answer : The modulator.

Description : What signal is used to synchronize the coherent oscillator to a fixed phase relationship with the transmitted pulse?

Last Answer : Coho lock pulse.

Description : When a transmitter uses a high-power oscillator to produce the output pulse, what switches the oscillator on and off?

Last Answer : High-voltage pulse from the modulator.

Description : What width is the pulse radiated by fire-control tracking radar?

Last Answer : Very narrow.

Description : What term is used to describe the product of pulse width and pulse-repetition frequency?

Last Answer : Duty cycle.

Description : Choose the correct statement(s) about dofetilide: A. It is a pure class III antiarrhythmic B. It has no adrenergic/cholinergic receptor blocking property C. It selectively depresses the rapid component of delayed rectifier K+ current in myocardial fibres D. All of the above

Last Answer : D. All of the above

Description : What is the primary advantage of power-amplifier transmitters over keyed-oscillator transmitters?

Last Answer : Frequency stability.

Description : Name a disadvantage of sine-wave oscillator synchronizers.

Last Answer : It requires additional shaping circuits.

Description : What basic circuits meet the requirements of an externally synchronized master oscillator?

Last Answer : Sine-wave oscillator, single-swing blocking oscillator, and master trigger (astable) multivibrator.

Description : What is the primary advantage of power-amplifier transmitters over keyed-oscillator transmitters?

Last Answer : Frequency stability.

Description : Name a disadvantage of sine-wave oscillator synchronizers.

Last Answer : . It requires additional shaping circuits.

Description : What basic circuits meet the requirements of an externally synchronized master oscillator?

Last Answer : Sine-wave oscillator, single-swing blocking oscillator, and master trigger (astable) multivibrator.

Description : What type of multivibrator can be used as a radar master oscillator?

Last Answer : Free-running.

Description : What transmission method uses a stable cw reference oscillator, which is locked in phase with the transmitter frequency?

Last Answer : Pulse-Doppler.

Description : What is the polarity of the first alternation of the tank circuit in an emitter-loaded npn pulsed oscillator?

Last Answer : Negative

Description : Why is a high-gain transistor used in the phase-shift oscillator?

Last Answer : Because of the losses encountered in the RC networks.

Description : Which components provide the regenerative feedback signal in the phase-shift oscillator?

Last Answer : Resistor-capacitor networks.

Description : What is the identifying feature of a Colpitts oscillator?

Last Answer : Split capacitors.

Description : What is the difference between the series-fed and the shunt-fed Hartley oscillator?

Last Answer : In the series-fed Hartley oscillator, dc flows through the tank circuit.

Description : What is the main difference between the Armstrong oscillator and the Hartley oscillator?

Last Answer : Feedback coil. Armstrong uses a separate coil. Hartley uses a tapped coil.

Description : Which oscillator uses tapped capacitors for feedback?

Last Answer : Colpitts.

Description : Which oscillator uses a tapped inductor for feedback?

Last Answer : Hartley.

Description : Which oscillator uses a tickler coil for feedback?

Last Answer : Armstrong.

Description : In a heterodyne-type frequency meter, what is the difference between the oscillator frequency and the unknown frequency?

Last Answer : Beat frequency.

Description : What characteristic of a gunn oscillator is inversely proportional to the transit time of the domain across the semiconductor?

Last Answer : The frequency.

Description : Why is the tunnel diode loosely coupled to the cavity in a tunnel-diode oscillator?

Last Answer : To increase the stability.

Description : What determines the frequency of a tunnel-diode oscillator?

Last Answer : The tuned circuit or cavity frequency.

Description : In an fm transmitter, when does an oscillator generate only a steady frequency?

Last Answer : When no modulation is present.

Description : What is the function of the oscillator in a cw transmitter?

Last Answer : It generates an rf carrier at a given frequency within required limits.

Description : Name two methods of oscillator keying.

Last Answer : Plate keying and cathode keying.

Description : What is pulse-width modulation (PWM) in Arduino?

Last Answer : Pulse-width modulation (PWM) in Arduino is a technique used to control the brightness of an LED or the speed of a motor by varying the duty cycle of a digital signal.

Description : What is a pulse-width modulation (PWM) signal in Arduino?

Last Answer : A PWM signal in Arduino is a digital signal that varies the width of the pulse to simulate an analog signal.

Description : What is Pulse Width Modulation?

Last Answer : Ans-Pulse width modulation is a modulation technique in which the width of the pulse is varied in accordance with the message signal. Pulse width Modulation is abbreviated as PWM. PWM can be used ... the pulse train and recover an average analog waveform. PWM is used in sound synthesis circuits.

Description : It indicates what signal frequencies can be propagated through a given distance of fiber cable. ∙ A. Bandwidth Distance Product ∙ B. Pulse width dispersion ∙ C. Rise time ∙ D. Cutoff frequency

Last Answer : A. Bandwidth Distance Product

Description : The width of the vertical sync pulse in the Philippine TV system is

Last Answer : 3H

Description : The width of the vertical sync pulse in the Philippine TV system is

Last Answer : 3H

Description : Pulse width modulation may be generated:

Last Answer : with a monostable multivibrator

Description : A pulse modulation technique as the width of a constant amplitude pulse is varied proportional to the amplitude of the analog signal at the time the signal is sampled.

Last Answer : PWM, PLM, PDM

Description : For the most Static RAM the write pulse width should be at least a) 10ns b) 60ns c) 300ns d) 1μs

Last Answer : b) 60ns

Description : An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds. The pulse width of the strobe is 50ns. The frequency of the input signal which can be used for proper operation of the counter is approximately (A) 1 MHz. (B) 500 MHz. (C) 2 MHz. (D) 4 MHz.

Last Answer : Maximum time taken for all flip-flops to stabilize is 75ns x 8 + 50 = 650ns. Frequency of operation must be less than 1/650ns = 1.5 MHz.

Description : In single pulse modulation of PWM inverters, third harmonic can be eliminated if pulse width is equal to   (a) 30o (b) 60o (c) 120o (d) 150o

Last Answer : In single pulse modulation of PWM inverters, third harmonic can be eliminated if pulse width is equal to 120o

Description : A 3 -stage ripple counter has Flip Flop with propagation delay of 25 nsec and pulse width of strobe input 10 nsec. Then the maximum operating frequency at which counter operates reliably is

Last Answer : A 3 -stage ripple counter has Flip Flop with propagation delay of 25 nsec and pulse width of strobe input 10 nsec. Then the maximum operating frequency at which counter operates reliably is 12.67 MHz

Description : A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty - cycle is equal to: A. 25% B. 50% C. 1% D. 100%

Last Answer : A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty - cycle is equal to:  25%

Last Answer : PWM means the width of pulse signal can be varied by varying ton & tOFF.

Description : In an astable multivibrator, which components determine the pulse repetition frequency?

Last Answer : RC coupling networks.

Description : The spectrum of a radar transmitter describes what characteristic of the output pulse?

Last Answer : Frequency distribution

Description : In addition to a flat top, what characteristics must a modulator pulse have?

Last Answer : Steep leading and trailing edges.

Description : In addition to a flat top, what characteristics must a modulator pulse have?

Last Answer : Steep leading and trailing edges.

Description : The range sweep in a range-gate generator is started at the same time as what other pulse?

Last Answer : Transmitter.