connect the base of the transistor to a variable resistor and to a normal resistor
The 2N5777 is a Darlington silicon NPN photo detector, or, if you prefer a photoDarlington. A link is provided to a bit of data on this device.
It depends on the phototransistor's design. Most are normally open until you shine light on them.
A phototransistor differs from a conventional bipolar junction transistor (BJT) primarily in its sensitivity to light. While a BJT relies on electrical current for operation, a phototransistor generates current when exposed to light, allowing it to function as a sensor. This makes phototransistors particularly useful in applications like light detection and optical communication. Additionally, phototransistors typically have lower gain compared to BJTs and are designed to be responsive to specific light wavelengths.
forward bias
forward bias is in the direction a junction or vacuum tube wants to conduct currentreverse bias is in the direction a junction or vacuum tube opposes conducting current
http://pdf1.alldatasheet.com/datasheet-pdf/view/86407/ASI/2N5777.html * High Sensitivity * Economical T0-92 Compatible Package ~MECHASUN~
connect the base of the transistor to a variable resistor and to a normal resistor
The 2N5777 is a Darlington silicon NPN photo detector, or, if you prefer a photoDarlington. A link is provided to a bit of data on this device.
It depends on the phototransistor's design. Most are normally open until you shine light on them.
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.
1st pin is emitter then collector and base
Emitter, base & collector.
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.
A phototransistor differs from a conventional bipolar junction transistor (BJT) primarily in its sensitivity to light. While a BJT relies on electrical current for operation, a phototransistor generates current when exposed to light, allowing it to function as a sensor. This makes phototransistors particularly useful in applications like light detection and optical communication. Additionally, phototransistors typically have lower gain compared to BJTs and are designed to be responsive to specific light wavelengths.
Fixed Bias,Self Bias, Forward Bias, Reverse Bias
a bias is a(n)
What? Bias is a one sided opinion