ABSTRACT: The starting voltage of an LED depends on the color to be broadcast, given the materials they are made, which are chosen according to color.
PHOTODIODE
The photodiodes are working with an initial voltage sense block. Without this initial tension work, sense of pace, as photocell (are bipolar when illuminated generate tension). The current in the dark is reduced. Working with resistance ohmic value can engender high voltage surges that reach almost the full operating voltage. Lens mustache anvil high-impact plastic (-) negative (+) positive Wavelength (nm)
Energy-saving lights
Economically speaking, the less artificial light is used, the better. However, from the standpoint of comfort and from the standpoint of health, we must say that artificial lighting should be used whenever necessary, and using as much power as needed. Otherwise we will be straining our eyes, it will suffer medium to long term.

Good to know that the amount of light that provides a bulb is measured in lumens (abbreviated lm). The electrical power consumed is measured in watts (abbreviated W). Both figures should appear on the packaging of the bulb.
Incandescent bulbs consume enough life energy, so for years that fluorescent, much more effective, replaced the bulbs in the kitchens of most homes. Currently there are about the size compact fluorescent bulbs from which they can replace in many applications while consuming far less energy to give the same amount of light. There are certainly more expensive, but so is that last much longer before spoiling.

The low energy efficiency of incandescent and halogen bulbs is that most of the electricity they consume directly transformed into heat, not light. So is hotter than the fluorescent
DESCRIPTION OF CONTROL:
The controller E5-AK, is a device that is responsible for regulating and maintaining a constant inlet temperature, set as a slogan, acting on a valve. Its operation is based on the principle of feedback, an essential element of all control mechanisms, allowing the designer to provide a machine for self-correction ability. A cycle or feedback loop is a mechanical, pneumatic or electrical sensing a physical quantity like temperature, size or speed, compared to a preset standard (slogan), and performs that action needed to maintain the preprogrammed measured amount within the limits of acceptable standard in this case on the valve named above.
In manufacturing and production, feedback loops require ladeterminación acceptable limits for the process to take place, that these physical characteristics are measured and compared with the set of limits, and that the feedback system is capable of correcting the process for the measured elements satisfy the rule. Through feedback devices machines can be started, stopped, speed up, slow down, count, inspect, test, compare and measure. These operations are usually applied to a wide variety of production operations. Below is a diagram showing the operation of the feedback:
Inputs, outputs, CONTROLS AND KEY INDICATORS:
INPUT: AK E5 controller contains the following inputs: temperature input, current input, voltage input, input CT / potentiometer, remote SP input event entry. In this lab, only going to use the temperature input by connecting a probe PT-100.
OUTPUTS: This driver, supports five different outputs: Control output 1. Control output 2. Auxiliary output 1. Auxiliary output 2. Departure transfer. In practice only use two control outputs 1 and 2. These outputs are of the all - nothing. In the figure we can distinguish the different elements E5AK control. In the figure below, one can observe external physical parts of the controller.
DISPLAYS DISPLAY 1 shows the process value or parameter symbols. No. 2 DISPLAY Displays the setpoint, manipulated variable or Selections of parameters.
OPERATING INDICATORS OUT1 Lit when control output 1 is turned ON (except analog output).
• OUT2 Lit when control output 2 is turned ON (except analog output).
• SUB1 Lit when the auxiliary output 1 is turned ON. • Sub2 Lit when the auxiliary output 2 is turned ON. • MANU Switch to manual operation mode. • STOP Turning to the operation stop. • Power RMT with remote operation. • RSP SP Power for remote operation. • AT blinks during adjustment.
BAR LEDS. In the basic rate controller (E5AK-AA2), this bar indicates the manipulated variable (heat) in increments of 10% per LED. The motorized valve controller (E5AK-PRR2), this bar indicates a valve opening in increments of 10% per LED.
Using the keys. - Key A / M: Each time you press this key switches emre manual operation and automatic operation. Key ": The functions of this key change depending on the time it is held down. If pressed for less than 1 second, change the parameter to be selected. If pressed for 1 second or more, the screen menu. From time it appears the menu, press "means press the key for less than 1 second.
Pressing the key! values increase or progress or no display selections. 2 while pressing! values decrease or regress or selections from the display. LED Bar: In the standard model (E5AK-AA2), this bar indicates the manipulated variable (heat) in 10% LED (segment). In the model of motor valve control (E5AK-PRR2) indicates the opening of the valve in 10% LED (segment). The duties vary, for example, when you press the button simultaneously A / M and the key mode or when holding a key.
PROCESS CONTROL:
In the above diagram, we see the control process carried out in practice. The liquid is propelled through the pump and is introduced into the boiler, where it is heated. The boiler temperature will depend on the opening of the motorized valve, which is responsible for feeding the boiler with water vapor.
This is where the controller, regulating the temperature of the boiler through motor drive. The controller, making reference temperature constantly as the one sent by the temperature transducer (probe PT 100) associated with the transmitter that gives us a standard voltage output for the controller (0-5V). With these elements closes the loop, making the scheme a fully automated process.