A; The base must be positive with respect to the emitter this condition will allow collector current to flow from collector to emitter. If the transistor manage to get saturated the current can flow in both direction. as a switch
If the voltage is great enough a current will flow.
The PNP switch circuit uses a PNP transistor to control the flow of current based on the input signal. When the input signal is high, the transistor allows current to flow from the collector to the emitter, turning the switch "on". When the signal is low, the transistor blocks current flow, turning the switch "off".
When an electric charge moves through a conductor, an electric current is generated in the conductor. The flow of electrons creates a flow of current in the conductor, which is the movement of electric charge through the material.
The flow of electrons is called electric current. It is the movement of electric charge through a conductor, such as a wire, in response to an electric field.
Wood is an insulator material, meaning it does not conduct electricity well. When you stand on wood, it acts as a barrier that prevents the flow of electric current through your body. This is why you do not experience an electric shock when standing on wood.
"P" is for Positive and "N" is for Negative So basically put a PNP Transistor Would use N to Switch P, in the name "PNP" or "NPN" the first character is for the polarity of the Collector-pin, the second for the Base-Pin, and the third for the Emmiter-pin. So if you have a PNP Transistor you can`t just replace it with an NPN as the polarities differ. If you can find a way to change those polarities then sure it could work. The Collector-pin basically receives the bigger current. The Base-pin determines how much of that current will be transferred to the emmiter-pin. So in a PNP the base current could for example be 0V and the Collector 5V, this will allow a free flow of current from Collector to Emmiter, the usage of a transistor in many cases is to switch high current with lower current. The main difference is that a PNP transistor uses "holes" as carriers and an NPN transistor uses electrons as carriers (It is to be remembered that the flow of current is always in the direction opposite to that of the flow of electrons). The difference in the symbol for the two transistors are that the PNP transistor will have an arrow pointed to the base from the emitter, and the NPN has it pointing outside.
The flow of current through a wire is known as electrical current.
1. NPN transistors current conductin is by electrons and conventional current flow will be in the opposite direction. 2. Majority charge carriers are electrons whose mobility is almost double than that of holes.
Mainly there are two types of transistors. They are BJT (Bipolar Junction Transistors) and FET(Field Effect Transisters). In BJT, there are two types called PNP and NPN. Actually NPN means a BJT transister.
Current flows through a resistor, not across it.
No, a current cannot flow in a wire with a free end because there is no complete circuit for the current to flow through. In order for current to flow, there must be a closed loop circuit for the electricity to circulate through.
A battery is charged by having a DC current flow through it.
AC current can flow through a capacitor, it's DC current that can't
The terminology for a steady flow of electrons through a conductor is called the current of the circuit.
current electricity is where electrons flow through a conductor.static electricity electrons do not flow
The flow of current through a wire increases its conductivity and decreases its resistance.
arrows are shown for conventional current, not electron current.