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How do you calculate the correct resistor value needed using 12vdc to run 6vdc circuit?
You need to drop 6 volts across the resistor.
-- The resistor you need is 6/(the current in amps that your 6vdc device uses to operate) ohms.
Example:
If the device uses 1/2 Amp when it's running, then you need a 6/0.5 = 12-ohm resistor.
-- And the power-dissipation rating of the resistor has to be at least 36/resistance watts.
Example:
For the 12-ohm resistor in the last example, it needs to be a (3-watt or more) resistor.
What else can I help you with?
How connect a variable resistor to circuit?
To connect a variable resistor to a circuit, identify the two terminals of the variable resistor. Connect one terminal to the input or output of the circuit where you want to adjust the resistance. Connect the other terminal to either the ground or another reference point depending on the circuit's design. Ensure that the resistance value on the variable resistor is adjusted as needed for your circuit application.
What is needed to calculate the voltage across a device?
you calculate a voltage circuit by taking it apart and findng the circuit and calculate the voltage and then resible it.
What do you need to build a circuit?
The things needed to build a circuit are:Circuit elements like resistor capacitors, inductors etcConnectors (cables)A source
Why is a resistor needed to discharge or charge a capacitor in an electric circuit?
A resistor may be used in series charging for current limiting, filtering, or as a signal isolater. Resistors across caps are to discharge them for your safety or equalize voltages across the caps in series filtering circuit.
What is the value of compensating resistor needed for a non inverting op-amp circuit using 10k resistors for both ri and rf?
In a non-inverting op-amp circuit, the gain (A) is determined by the ratio of the feedback resistor (Rf) to the input resistor (Ri) using the formula ( A = 1 + \frac{R_f}{R_i} ). With both Ri and Rf set to 10kΩ, the gain would be ( A = 1 + \frac{10kΩ}{10kΩ} = 2 ). If you are looking for a compensating resistor to balance or adjust this gain, it would depend on the specific requirements of your circuit, but typically, no additional compensating resistor is needed if the desired gain is already achieved with the chosen resistors. Adjustments can be made if a different gain is required.
When is the resistor bypass used in the ignition circuit?
The resistor bypass in the ignition circuit is used when starting the engine. It bypasses the resistor to provide full battery voltage to the ignition coil, ensuring a strong spark for a quick and reliable engine start. Once the engine is running, the bypass is no longer needed and the resistor is re-engaged to limit the voltage to the ignition coil for normal operation.
Define zero ohm resistor.?
A zero-ohm resistor does not exist, so we are talking about an ideal resistor. An ideal resistor is needed for description in a circuit, where we lump all wire/parasitic resistances into discrete resistors, but the wire joining two discrete resistors is considered to have no resistance. My definition: a zero-ohm resistor is an ideal resistor that does not consume energy when a current exists in the resistor. Alternatively, a zero-ohm resistor is an ideal resistor that cannot sustain any potential drop when a current is on. Thirdly, a zero-ohm resistor is an ideal resistor that will conduct an infinite current when a voltage is applied across it.
What happen if resistors has high power?
The power rating of the resistor only tells the amount of power it's able to dissipate without overheating, melting, or exploding. The amount of power that a resistor dissipates is determined by its resistance and the current through it (or voltage across it). If you put a small resistor at a place in the circuit where it must dissipate more power than it's rated for, then it'll overheat and possibly fail. If you put a high power resistor at a place in the circuit where it dissipates much less power than it's rated for, then nothing happens at all. It simply takes up more space on the board than was necessary, because it's bigger than what was needed there, and you spent more money than you needed to spend for the kind of resistor that you needed at that place in the circuit.
How is the stepped resistor differ from the fixed resistor?
A stepped resistor, also known as a variable resistor or rheostat, allows for adjustable resistance levels, enabling fine-tuning of current flow in a circuit. In contrast, a fixed resistor has a constant resistance value and does not change. While stepped resistors can be used for applications requiring variable resistance, fixed resistors are typically used in applications where a specific resistance is needed. The ability to adjust resistance in stepped resistors offers greater flexibility in circuit design.
Can a resistor be installed backwards?
Resistors can be installed in any direction in a circuit. It doesn't matter in which direction you are installing a resistor. Resistor will resist the current in both sides of the connection. You can also apply capacitor in any direction for alternating current. Where as if you are concerned with direct current, a direction is needed to apply the connection
What resistor is need pull 1500Ma?
To calculate the resistor needed to pull 1500 mA (1.5 A), you need to know the voltage across the resistor. Using Ohm's Law (V = I × R), you can rearrange it to find R (Resistance = Voltage / Current). For example, if the voltage is 5V, the resistor needed would be R = 5V / 1.5A = 3.33 ohms. However, ensure the resistor can handle the power dissipation, calculated as P = I² × R, which in this case would be approximately 7.5 watts.
Materials needed to make a resistor.?
carbon
