Overview
In the 19th century, light-emitting diodes – LEDs were invented by N. Holonyak. LEDs came to replace
the traditional light bulbs, for they were better in almost every aspect. They last longer, produce less
heat and use less electricity. LEDs are used in many appliances that are used in our day-to-day
household applications. The common applications for LEDs are desk lamps, table lamps, reading lamps
and decorations such as LED candles, LED spotlights or interactive decorative lights such as dancing
LEDs.
Since the invention of light bulbs in the late 1800s, desk lamps have been manufactured in countless
designs and shapes. The features of contemporary desk lamps surpass the features of Thomas Edison’s
first light bulb. These features aim to satisfy customers’ diverse needs and demands.
Our current lifestyle promotes the use of smart devices, which are widely used to make our lives easier.
One more application of LED to use in a smarter application is the automatic night lamp. The automatic
night lamp automatically turns on when it starts getting darker in the evening. Similarly, the lamp turns
off automatically during the day. This not only saves electrical energy, but it is also a smart way to save
time and effort.
The circuit of your lamp will have resistors, LEDs, a transistor and an LDR (light dependent resistor).
Transistors are electronic devices that either work as switches or amplifiers. In this circuit, the transistor
you will use works as a switch. It closes the circuit when the LDR does not sense light (dark) and opens
the circuit when the LDR senses light. In fact, LDRs work as light intensity sensors.
Overview
In the 19th century, light-emitting diodes – LEDs were invented by N. Holonyak. LEDs came to replace
the traditional light bulbs, for they were better in almost every aspect. They last longer, produce less
heat and use less electricity. LEDs are used in many appliances that are used in our day-to-day
household applications. The common applications for LEDs are desk lamps, table lamps, reading lamps
and decorations such as LED candles, LED spotlights or interactive decorative lights such as dancing
LEDs.
Since the invention of light bulbs in the late 1800s, desk lamps have been manufactured in countless
designs and shapes. The features of contemporary desk lamps surpass the features of Thomas Edison’s
first light bulb. These features aim to satisfy customers’ diverse needs and demands.
Our current lifestyle promotes the use of smart devices, which are widely used to make our lives easier.
One more application of LED to use in a smarter application is the automatic night lamp. The automatic
night lamp automatically turns on when it starts getting darker in the evening. Similarly, the lamp turns
off automatically during the day. This not only saves electrical energy, but it is also a smart way to save
time and effort.
The circuit of your lamp will have resistors, LEDs, a transistor and an LDR (light dependent resistor).
Transistors are electronic devices that either work as switches or amplifiers. In this circuit, the transistor
you will use works as a switch. It closes the circuit when the LDR does not sense light (dark) and opens
the circuit when the LDR senses light. In fact, LDRs work as light intensity sensors.