A: Those diodes are used as a variable capacitance whereby applying a voltage changes the capacitance which effect the frequency of the tuning circuit
The type of diode commonly used in televisions is the Schottky diode. Schottky diodes are favored for their fast switching speeds and low forward voltage drop, making them ideal for rectification and signal processing in TV circuits. Additionally, they help improve efficiency in power supply sections of modern televisions.
The varactor diode is used in frequency tuning applications. Its effective capacitance is a function of the reverse bias voltage across it.
infrared diode
Diode detector
light emitting diode and its a diode that emitting the light when the current passes through it and it used in the TV screen
light emitting diode and its a diode that emitting the light when the current passes through it and it used in the TV screen
Diodes are largely used for changing AC into DC. A half wave diode bridge will use two diodes for this purpose. A full wave bridge uses four diodes to accomplish this task.See related links below.
Voltage controlled variable capacitor. Usually used for dynamic tuning of resonant circuits.
If the reverse recovery time of the diode is too long for the operating frequency, the diode will never turn off.
The peak wavelength of the IR diode used in TV remotes are usually around 940 nanometers.
Varactor diodes, also known as varicap diodes, are commonly used in devices such as voltage-controlled oscillators (VCOs), frequency modulators, and tuners in radio and television receivers. They exploit the voltage-dependent capacitance of the diode to allow for adjustable tuning in circuits. Other applications include phase-locked loops (PLLs) and RF filters, where they help in frequency stabilization and modulation. Additionally, varactor diodes are used in communication systems for channel selection and signal processing.
leds are used for a lot of different products,mp3players,lamps,night lights TVs computers, etc.leds are used to create light or power.