Advantages and disadvantages of TRIAC

A TRIAC stand for is a bidirectional thyristor with three terminals device. Thyristor used extensively used for the control of power in the AC circuit. Here this post gives information about the advantages and disadvantages of TRIAC to better understand this topic.


Advantages of Triac:
  • The Triac need a single fuse for protection
  • When the voltage is reduced to zero the TRIAC device is generally turned off
  • It needs only a single heat sink of a slightly larger size whereas for SCR two heat sinks should be required of smaller size
  • A safe breakdown in either direction is possible  using TRIAC but for SCR protection should be given with parallel diode
  • It can be triggered with positive or negative polarities of gate pulses
Disadvantages of Triac:
  • It has a very high switching delay
  • This is not suitable for DC application
  • It can be triggered in any direction so we need to be careful about triggering circuit
  • As compare to SCR it has a low rating
  • The TRIAC is not much reliable as compared to SCR
  • The dv/dt rating is very low as compared to SCR device

Piezoelectric transducer applications

There are many different types of transducer available but piezoelectric transducer are some of the applications compare to other transducers. So this page is given below some applications of the piezoelectric transducer are given below
  • A piezoelectric transducer is used in spark ignition engines
  • It is used in a record player
  • It is an accelerometer
  • It can be used in electronics watches 
  • It is used in medical diagnostics
  • Used in inkjet printers
  • Used in fertility treatment
  • They are used for studying high-speed waves and blast waves
  • In strain gauges to measure force, stress, and vibrations
  • Used by automotive industries to measure detonations in engines
  • It is used in electric lighter used in kitchens devices
  • These are used in ultrasonic imaging in medical applications
  • The automotive companies used a piezoelectric transducer to detect detonations in the engine blocks
  • Automobile seat bels lock in response to a rapid deceleration is also done by the piezoelectric material
  • They are used in seismographs to measure vibrations in rockets

Difference between microprocessor and microcontroller

There has always been confusion between microprocessor and microcontroller. Both of them have been used for real-time applications. They also share many common features and at the same time have significant differences. Both are integrated circuits are available in different versions starting from 6 pins to as high as 80 to 100 pins depending on the features. A significant discussion at this stage is the difference between microprocessor and microcontroller.


Primary difference :


  • The microcontroller uses on-chip embedded flash memory in which store and execute its program. Most of the devices available in the market have a maximum of 2 Mbytes of program memory is the only limitation that the total available memory space is finite. 
  • The microprocessor does not have memory constraints use external memory to provide program and data storage. You can connect to the processor is in the range of hundreds of Mbytes and even Gbytes also. 

Difference :
  • Microcontroller just needs one single voltage power rail whereas microprocessor required several different voltage rails for core and DDR. 
  • The microprocessor is the heart of a computer system on the other hand microcontroller is the heart of the embedded system. 
  • The microprocessor cannot be used in a compact system and hence inefficient and the microprocessor can be used in a compact system and hence it is an efficient technique. 
  • In the microprocessor memory and components have to be connected externally thus the circuit becomes large whereas memory and components have to be connected internally thus the circuit becomes small. 
  • Due to external components, the entire power consumption is high in the case of a microprocessor hence, it is not suitable to use with devices running on stored power like batteries and vice versa because entire power consumption is less in the microcontroller. 
  • Most of the microprocessors do not have power saving features while the microcontroller has idle mode and power saving mode this helps to reduce power consumption even further. 
  • Compared to the microcontroller, the clock speed of the microprocessor is quite high.
  • The microcontrollers have more registers, which makes the program simpler to write than the microprocessor due to fewer registers.
  • Microprocessor mainly used in personal computers and microcontroller mainly used in a washing machine, MP3 player. 
  • The microprocessor has zero status flag, whereas microcontroller has no zero flags. 
  • The instruction in the microprocessor is bits or bytes whereas in the microcontroller instruction are both bits and bytes addressable. 

DPCM full form

What is the full form of DPCM?

  • Differential Pulse Code Modulation

What does DPCM mean?

DPCM is a technique of analog to digital signal conversion in which an analog signal is sampled and then the difference between the actual sample value and its predicted value is quantized and then encoded forming a digital value. Before we are discussing the differential PCM we have to know the demerits of PCM.  

Advantages and disadvantages of piezoelectric transducer

When an external force is applied to this transducer, the produced voltage that can be measured easily. This change is measured by its corresponding value of sound or some of the vibration. There are many different types of transducer available but piezoelectric transducer are some of the advantages compare to other transducers. So this page is given below some advantages and disadvantages of the piezoelectric transducer are given below:

There are some advantages of the piezoelectric transducer which are given below:
  • The piezoelectric transducer has a good frequency response
  • It is small in size
  • It is easy to handle  because of its small dimension
  • It has rugged construction
  • It is available in the desired shape
  • It has a negligible phase shift
  • Natural quartz and barium titanate can be made any desired form and shape
  • It offers high output that is measured in the electronics circuit
There are some disadvantages to the piezoelectric transducer which are given below:
  • It has high-temperature sensitivity
  • Some crystals are water soluble and dissolve in a high humid environment
  • The piezoelectric transducer is used for dynamic measurement only, not suitable for static conditions
  • It needs high piezoelectric cable for electrical interface because the device operates with the small electric charge
  • The output obtained from the piezoelectric transducer is low, so the external electronic circuit has to be connected 
Applications of piezoelectric transducer:
  • It is used in a record player
  • It is used in accelerometer
  • It can be used in electronic watches
  • It is used in spark ignition engines
This article also gives some advantages of piezoelectric pressure transducer which are given below:

Advantages of piezoelectric pressure transducer:
  • Rugged construction 
  • Small size
  • Excellent frequency response
  • High output with negligible phase shift
Disadvantages of piezoelectric pressure transducer:
  • Temperature sensitive
  • It can be used for dynamic measurement only
  • Piezoelectric crystals are water soluble hence it has a high humidity environment gets dissolved
There is some application of piezoelectric pressure transducer which is given below:
  • It is used in spark ignition engines
  • It is used for measurement of nonelectrical quantities such as acceleration, vibration dynamic pressure, and sound intensity
  • It is used in ultrasonic, nondestructive test equipment, ultrasonic flow meters, micromotion actuators

What is transducer

Definition of transducer:

A transducer is a device that converts the energy from one form to another. Usually, a transducer converts a signal in a form of energy to a signal in another. Some of the transducers is usually more efficient than others, An illustration power into an electromagnetic field. 

Characteristics of the transducer:


One of the main key difference between the sensor and transducer is that the transducer converts the physical quantity or nonelectrical into another signal or electrical signal whereas the sensor senses the physical changes occur in the surrounding.

The characteristics of the transducer are given below that are determined by examining the output response of a transducer to a variety of input signals. The method of computational and standard statistical can be applied to the test data. 
  • Accuracy
  • Noise 
  • Linearity
  • Sensitivity
  • Hysteresis
  • Size
  • Span 
  • Repeatability
  • Conformance
  • Resolution
  • Speed
  • Ruggedness
  • High output
  • High stability
For detailed information

Different types of transducer:

Classification based on the source of energy: Active and passive transducer 

Classification based on physical quantity: 
  • Pressure transducer - Bourdon gauge
  • Force transducer  - Dynamometer
  • Acceleration transducer  - Accelerometer
The primary and secondary transducer  


For detailed information


Application of the transducer:

Application of the transducer in a different part of electronics :
  • Thermistor/ Thermocouple
  • Optocoupler
  • LDR
  • Microphone
  • Hall effect
  • Speaker
  • Magnetic pickup
  • Flame or smoke
  • Pizzo
  • Strain gauge
  • Vibration
  • Magnetism
  • Force
  • Torque
  • Power
  • Current
  • Magnetic flux
  • Position 
  • Humidity
  • Displacement
  • Pressure

For detailed information

Advantages and disadvantages of the electrical transducer:
  • The electrical output of the transducer can be easily used, transmitted and also easily processed for the purpose of measurement.
  • Mass inertia effects are minimized
  • The signal can be conditioned or mixed to obtain any combination with the output of similar transduces or control signals
For detailed information

Transducer

What is a transducer?

A transducer is a device that converts the energy from one form to another. Usually, a transducer converts a signal in a form of energy to a signal in another.


Classification based on the source of energy: Active and passive transducer 

Classification based on physical quantity: 

  • Pressure transducer - Bourdon gauge
  • Force transducer  - Dynamometer
  • Acceleration transducer  - Accelerometer
Primary and secondary transducer  Read more 

  • Hysteresis
  • Size
  • Span 
  • Repeatability
  • Conformance
  • Resolution
  • Speed
  • Ruggedness
  • High output
  • High stability Read more 


Advantages of electrical transducer:  1. Mass inertia effects are minimized 2. The signal can be conditioned or mixed to obtain any combination with the output of similar transduces or control signals
Disadvantages of electrical transducer: 1. The electrical transducer has costly Read more


  • Thermistor/ Thermocouple
  • Optocoupler
  • LDR
  • Microphone
  • Hall effect
  • Speaker
  • Magnetic pickup
  • Flame or smoke
  • Pizzo
  • Strain gauge
  • Vibration
  • Magnetism
  • Force  Read more