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a resister is to RESIST current flow....if the LED gets the full effect of the power supply, the LED will immediately blow out.
What else can I help you with?
Should a resistor go on the positive or negative side of an LED?
It does not matter. Kirchoff's Current Law states that the signed sum of the currents entering a node is zero. A consequence of that law is that the current in every part of a series circuit is the same. The only thing that resistor location affects is the potential voltage of the LED terminals with respect to the rest of the circuit. Certainly, if you are driving the LED with high voltage, such as 120VAC, you should consider the resistor location so as to reduce electrocution hazard but, the LED's performance is not affected by resistor location in the circuit.
A component used to protect an led in a circuit?
you could use a current limiting diode such as a Zenner, or a current limiting resistor in series with the LED
Why resistor should disconnected from the circuit when measured the value of resistor?
if not disconnected you will measure the resistance of the circuit in parallel with the resistor.
How do you build a door sensor alarm system using a simple circuit board?
I bought: reed switch LED Buzzer Button (On/Off) Resistor (if necessary) I connected: <---Button------Reed switch------Resistor (if necessary)------LED------Buzzer---Batteries--->
What does the variable resistor do in a circuit?
It is used to vary the voltage/current flow in a circuit.
What is the function of the resistor in an led circuit?
current limiter.
Where do you use the current limiting resistor?
in a flashing led circuit connected in series
Led circuit for 120 volts?
There can be no answer for this without knowing how strong a resistor is involved. (Ohms)
Should a resistor go on the positive or negative side of an LED?
It does not matter. Kirchoff's Current Law states that the signed sum of the currents entering a node is zero. A consequence of that law is that the current in every part of a series circuit is the same. The only thing that resistor location affects is the potential voltage of the LED terminals with respect to the rest of the circuit. Certainly, if you are driving the LED with high voltage, such as 120VAC, you should consider the resistor location so as to reduce electrocution hazard but, the LED's performance is not affected by resistor location in the circuit.
How to build an led cIRCUIT?
Connect an LED, two AA batteries, and a resistor of around 100-150 ohms, all in series.If the LED doesn't light, then turn either the LED or the batteries around in the circuit.
What does a resistor do in an ampliflyer circuit?
what does a resistor in an ampliflyer circuit
If you interchange resistor and led what happens?
Nothing changes. The circuit operates as before. Just make sure that the orientation of the LED does not change.
A component used to protect an led in a circuit?
you could use a current limiting diode such as a Zenner, or a current limiting resistor in series with the LED
Why resistor should disconnected from the circuit when measured the value of resistor?
if not disconnected you will measure the resistance of the circuit in parallel with the resistor.
When the switch is pushed to on what is likely to happen to the LED if the circuit is composed of three 1.5 volt batteries?
When the switch is pushed to the "on" position in a circuit composed of three 1.5-volt batteries connected in series, the total voltage supplied to the circuit will be 4.5 volts. If the LED is rated for that voltage and is connected correctly with the appropriate resistor, it will likely light up. However, if the voltage exceeds the LED's rating or if there's no current-limiting resistor, the LED could burn out.
How do you build a door sensor alarm system using a simple circuit board?
I bought: reed switch LED Buzzer Button (On/Off) Resistor (if necessary) I connected: <---Button------Reed switch------Resistor (if necessary)------LED------Buzzer---Batteries--->
How do you connect an LED into a circuit?
A: Add the proper resistor in series with the LED. What resistor? Simple 10volts source minus the LED source divided by the 20ma current that should be flowing gives you the resistor 10-1.8=8.2/.02=900 ohms. The 1.8 can be anything it is up to the LED voltage drop. LONG LEAD IS POSITIVE SHORT IS NEGATIVE SINCE IT IS A DIODE
