In a transmitter/receiver circuit, the LED and phototransistor must have the same wavelength.
In the receiver circuit there is an ordinary glass diode 1N4148. Correct me if I'm wrong, but this is used as a switching diode. However, it is used as a wavelength detector.
In the 1N4148 data sheet, I could not find any information about wavelength. So my question is very simple. Does the ordinary glass diode have any wavelength?
Perhaps I'm asking the wrong question? Does the wavelength of the 1N4148 glass diode have to be the same as the <> ?
In the receiver circuit there is an ordinary glass diode 1N4148. Correct me if I'm wrong, but this is used as a switching diode. However, it is used as a wavelength detector.
In the 1N4148 data sheet, I could not find any information about wavelength. So my question is very simple. Does the ordinary glass diode have any wavelength?
Perhaps I'm asking the wrong question? Does the wavelength of the 1N4148 glass diode have to be the same as the <
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1N4148 cannot be used as signal diode detection neither it can be used as you called "wavelength detector". It uses as a high speed switch. 1N4148 never being used as signal detector in any receiver and it failed to function as detector because its PN junction capacitance is too high that not even able to detect AM band radio frequency.
1N4148 DOES NOT INVOLVE WITH WAVELENGTH BECAUSE IT IS A SEMI CONDUCTOR SWITCH.
1N4148 DOES NOT INVOLVE WITH WAVELENGTH BECAUSE IT IS A SEMI CONDUCTOR SWITCH.