Automatic Street Light Controller Circuit Using Relays and LDR
Description. The circuit diagram present here is that of a street light that automatically switches ON when the night falls and turns OFF when the sun rises.In fact you can this circuit for implementing any type of automatic night light. The circuit uses a Light Dependent Resistor (LDR) to sense the light .When there is light the resistance of LDR will be low.Machine Guarding eTool | Presses Presence Sensing Devices
Presence sensing devices can not be used on machines using full revolution clutches. [29 CFR 1910.217(c)(3)(iii)(a)]A presence sensing device (PSD) must protect the operator by preventing or stopping normal stroking of the press if the operator's hands are inadvertently placed in the point of operation.Thermistor Temperature Sensor Circuit | Sensing Alarm Circuits
This circuit is a temperature sensing as well as alarm circuit. The circuit raises an alarm whenever the temperature crosses a certain limit. Temperature monitoring is a very important and frequently used application in industries and in many other places where the temperature should be kept below a maximum allowable level.Fold change Response of Photosynthesis to Step Increases ...
Figure 1. Chl a Fluorescence Shows Approximate Fold Change Detection in Response to a Series of Input Light Steps (A and B) A.thaliana plants pre adapted to 10 μE m 2 s were presented with a series of 10 min spaced light steps (input light) with either (A) the same absolute change of 35 μE m 2 s or (B) the same 2 fold change. The normalized fluorescence responses (experiment output ...Automatic LED Emergency Light Circuit
An Automatic LED Emergency Light circuit is designed to turn ON when there is no adequate lighting or if the power supply is cut off. Earlier fluorescent lights were used to build such circuits. But the use of LED’s have proven to provide adequate lighting for a longer period before draining the ...ActLight – Light sensing. Reinvented
ActLight’s Dynamic Photodiode (DPD) technology offers technological breakthrough in light sensing. Traditionally, photodiodes operate at constant reverse bias voltage giving photocurrent as output.Simple LM35 Electronic Temperature Sensor Indicator Circuit
This is a simple temperature sensor circuit diagram using LM335 temperature sensor and LM3914 IC.Here the complete temperature range becomes observable through an array of LEDs. The LM35 is an integrated circuit temperature sensor for sensing temperature in degree Celsius scale. The LM3914 is an efficient display driver cum milli volt measuring IC and it is very easy to apply as an analog ...Sensor
In the broadest definition, a sensor is a device, module, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor.A sensor is always used with other electronics. Sensors are used in everyday objects such as touch sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by ...Quorum sensing
In biology, quorum sensing is the ability to detect and to respond to cell population density by gene regulation.As one example, quorum sensing (QS) enables bacteria to restrict the expression of specific genes to the high cell densities at which the resulting phenotypes will be most beneficial. Many species of bacteria use quorum sensing to coordinate gene expression according to the density ...Bidirectional Visitor Counter Circuit using 8051 ...
Bidirectional Visitor Counter Circuit Principle. The circuit works on the principle of IR sensing. Infrared or simply IR Sensors are devices that work with Infrared Light Source and a Photo Detector like a Photo Diode or a Photo Transistor that act as a Transmitter and Receiver respectively.
sensing circuit using a light dependent resistor is shown below Gallery
feel the rainbow sensing color with an arduino