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A photo transistor is a gate which is sensitive to light. Therefore it can be used in any circumstances where a circuit needs to be sensitive to light.
Circuits which employ photo transistors and their relatives the photo-resistor and photo-diodes, are already used in such equipment as light switching. These circuits determine if it is dark enough to turn on street and domestic lights and turn them on or off when a preset level of light is present.
What else can I help you with?
Give the meaning of L and G in L14G1 phototransistor?
In the designation L14G1 phototransistor, the "L" typically stands for "light," indicating that it is a light-sensitive device. The "G" often represents "germanium" or "glass," referring to the material used in the phototransistor's construction or packaging. The "14" and "1" are likely specific model numbers or series identifiers used by the manufacturer to differentiate this phototransistor from others in their lineup.
How do electric companies calculates electric energy used?
Electric companies calculate the amount of electric energy by using special consumption meters.
In what ways was hydroelectric energy used in the past?
Hydroelectric energy is electric energy produced with hydro(water). How the electricity is produced makes no difference on how it is used. Electricity is used for lights, electric motors, electric heat etc.
How can a phototransistor be utilized as a normally open digital input?
A phototransistor can be used as a normally open digital input by connecting it in a circuit where it is exposed to light. When light falls on the phototransistor, it conducts current, effectively closing the circuit and signaling a "high" digital input. Conversely, in the absence of light, the phototransistor remains off, indicating a "low" input. This setup allows for light activation of digital signals in applications like light-sensitive switches or optical sensors.
What source of energy used in lamp?
Electric
What are two ways that electric energy is converted to kinetic energy?
Electric energy can be converted to kinetic energy through the use of electric motors, which transform electrical energy into mechanical energy to produce motion. Another way is through electric trains, where electric energy is used to power the motors that move the train along the tracks.
What form is Krytpon in when used?
Krypton is a gas when used in energy saving life bulbs.
What is the current energy saving standard used by most PC?
ACPI
What type of energy is formed when a washing machine is used?
The motor is electric, the hot water is typically heated by gas or electric.
What affects the amount of electric energy an appliance uses?
The power rating of the appliance, the duration of use, and how efficiently the appliance converts electricity into its working output all affect the amount of electric energy an appliance uses. Additionally, factors like the size of the appliance, its energy-saving features, and how often it is used can also play a role in determining its energy consumption.
What device is used to transform thermal energy to electric energy?
A thermoelectric generator is typically used to transform thermal energy into electric energy. It works by utilizing the temperature difference between two different materials to generate an electric current.
Why are transformer more efficient than a rotating electric machine?
Transformers inherently do not have frictional losses, but transformers and rotating machines perform completely different functions, so I'm not sure it is fair to compare them. Transformers are used to transform electric energy (the input is electric energy, and the output is electric energy). Rotating machines either take electric energy and convert it to mechanical/kinetic energy, or take kinetic energy and convert it to electric energy.
