POWER STORAGE DETAILS Block diagram: The voltage generated by the source (generator) is not of pure dc. This has to be rectified before storage. A diode rectifier then provides a full-wave rectified voltage that is initially filtered by a simple capacitor filter to produce a dc voltage. Block diagram (Power supply) Working principle: The Full Wave Bridge Rectifier Full Wave Bridge Rectifier uses four individual rectifying diodes connected in a closed-loop "bridge" configuration to produce the desired output. The main advantage of this a bridge circuit is that it does not require a special center-tapped transformer, thereby reducing its size and cost. The single secondary winding is connected to one side of the diode bridge network and the load to the other side as shown below. The Diode Bridge Rectifier The four diodes labeled D1 to D4 are arranged in “series pairs” with only two diodes conducting current during each
SENSORS
Automatic control systems several parameters such as tem
nature, light, level, proximity, Limit are to be sensed and conveyed to a
control devise for the purpose of output control
The above parameters are generally sensed by different
devices
l as sensors. Those sensors give appropriate signals to the
rol device. The device picks up the signal from those devices to check the
condition of the system on receiving the input. The aut signals given by the
sensors are passed to the control device in terms of ON-OFF logic signals
Sensors are detectors that can measure some type of physical
quality that is happening, such as pressure or light. The sensor will then be
able to convert the measurement into a signal that one will be able to read.
Most of the sensors in use today are actually going to be able to communicate
with an electronic device that is going to be doing the measuring and
recording. Today, you are going to be able to find sensors in a wide range of
different devices that you use regularly. The touch screen that you have on
your phone has sensors, and they use pressure sensors for opening the doors at
the market. Sensors are a very common part of everyday life.
History of Sensors:
Sensors have been around for quite some time in various
forms. The first thermostat came to market in 1883, and many consider this the
first modern, manmade sensor. Infrared sensors have been around since the late
The 1940s, even though they’ve really only entered the popular nomenclature over
the past few years. Motion detectors have been in use for several years
The answer is going to depend upon the exact
type of sensor in question. For the electric thermostat, the inventor would be
Warren S. Johnson. While it might have seemed crude by the modern standards
that we have today, this the thermostat was able to keep temperatures within
a degree of accuracy something better than some of the low-quality
thermostats on the market today! The first motion sensor used for an alarm
system came about in the early part of the 1950s and was the invention of
Samuel Bagno. His device made use of ultrasonic frequencies as well as the
Doppler Effect.
What are the Different Types of Sensors?
In today’s world, you will be able to find sensors that can
detect several different things. The following are some of the most common
sensor types out there and a bit about each of them. Understanding
more about the different types of sensors can help you determine which ones you
might need to have for your own applications.
• Vision
Sensors
• Fiber
Optic Sensors
• Level
Sensors
• Flow
Sensors
• Reed
Switch Sensors
• Voltage
Sensors
• Gas
Sensors
• Sensor
I
• HVAC
Sensors
• Wireless
Motion Sensors
• Proximity
Sensors
• Reflective
Optical Sensors
• Touch
Screen Sensors
• Current
Sensors
• Temperature
Sensor
• Humidity
Sensor
• Image
Sensors
• Color
Sensors
• Light
Sensors
• Pressure
Sensors
• Infrared
Sensors
• Photoelectric
Sensors
• Capacitive
Proximity Sensors
• Vibration
Sensors
• Hall
Effect Sensors
• Moisture
sensor
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