Write the differences between vacuum tube (valve) electronic devices and semiconductor electronic devices.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A)
Vacuum tube (valve) electronic devicesSemiconductor electronic devices
$(1)$ Devices made from vacuum tubes are bulky and stationary.$(1)$ Devices made from semiconductors are compact and portable.
$(2)$ These devices require high operating voltage (about $90 \ V$ to $100 \ V$ or more),making them less power-efficient and more expensive.$(2)$ These devices require low operating voltage (about $1.5 \ V$ to $9.0 \ V$),making them power-efficient and cost-effective.
$(3)$ They use fragile glass envelopes,making them prone to damage,resulting in a shorter lifespan and lower reliability.$(3)$ They are solid-state devices,making them robust,durable,and highly reliable with a long lifespan.
$(4)$ They require heating of a filament to emit electrons (thermionic emission) and high voltages to control electron flow.$(4)$ They do not require filament heating; charge carriers are available at room temperature,and electron flow is controlled by small voltages.
$(5)$ Historically used in television and computer monitors (e.g.,Cathode Ray Tubes).$(5)$ Modern devices use Liquid Crystal Displays $(LCD)$ or Light Emitting Diodes $(LED)$.

Explore More

Similar Questions

The amplification factor of a triode is $20$. Its plate resistance is $10 \, k\Omega$. The mutual conductance is:

$A$ triode has a mutual conductance of $2 \times 10^{-3} \text{ mho}$ and an amplification factor of $50$. The anode is connected through a resistance of $25 \times 10^3 \, \Omega$ to a $250 \, \text{V}$ supply. The voltage gain of this amplifier is

How many electrodes are in the tetrode?

$14 \times 10^{15}$ electrons reach the anode per second. If the power consumed is $448 \text{ mW}$,then the plate (anode) voltage is .... $V$.

The slope of the plate characteristic of a vacuum tube diode for a certain operating point on the curve is $10^{-3} \text{ mA/V}$. The plate resistance of the diode and its nature are respectively:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo