Nope, doesn't work that way. When the transistor turns on as a "low-side switch", you want current to be drawn from the + power supply, through a current-limiting resistor, through the LED and the transistor to ground.physsure said:
A transistor and an LED in parallel refers to the arrangement of two electronic components in a circuit, where they are connected side by side with each other. This allows for current to flow through both components simultaneously.
In this arrangement, the transistor acts as a switch that controls the flow of current through the LED. When a voltage is applied to the base of the transistor, it allows current to flow from the collector to the emitter, powering the LED.
One advantage is that the transistor can control the amount of current flowing through the LED, allowing for precise brightness control. Additionally, if the LED burns out, the transistor will still function, preventing the entire circuit from failing.
There is a risk of overloading the circuit if the transistor is not properly sized to handle the amount of current passing through it. Additionally, if the LED fails, it may create a short circuit which could damage the transistor.
This arrangement is commonly used in electronic circuits that require precise control of LED brightness, such as in LED displays, lighting systems, and audio amplifiers. They are also used in power supplies and motor control circuits.