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When resistors burn out, they typically fail in an open circuit condition rather than a short circuit. This means that they stop conducting electricity altogether, which can cause the circuit to break. However, in some cases, particularly with low-quality resistors, they may fail short, allowing current to flow freely. Overall, open failures are more common than short failures in resistors.
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What happens to the voltage values of other resistors when a short occurs in one of them?
If a short occurs in a resistor in series with other resistors, the voltage drops across the other resistors will increase. If a short occurs in a resistor in parallel with other resistors, the voltage drops across the other resistors will decrease, to zero.
What happens to the value of a resistor when it goes bad?
we can say that a resistor gone bad if 1. its resistance is different than that printed by the color code 2. doesn't conduct any current Resistors normally will burn open. Carbon resistors almost always do this, while wireound resistors can lower in resistance. They may still allow current flow, but it will not be correct.
When do resistors short?
A; occasionally resistors short out especially at hi frequency hi voltage due to external contamination. But usually resistors open up or change to a hi value due to power overstress
What is a pull up resister?
A pull-up resistor common 4K7 is normally used on ICs where a pin is floating to pull the pin to 5 volt or logic 1 it can be pulled to logic 0 internally by the IC it is normally used with MCUs (micro processors)
What happens if 3 resistors connected in parallel and one of the resistors is open circuited?
When one resistor in a parallel circuit is open-circuited, it effectively becomes an infinite resistance and no current flows through it. The total resistance of the parallel circuit increases, but the remaining resistors continue to function normally. The overall current through the circuit will decrease because the total current is now only dependent on the remaining active resistors. The voltage across all parallel resistors remains the same as before the open circuit occurred.
What happens to the voltage values of other resistors when a short occurs in one of them?
If a short occurs in a resistor in series with other resistors, the voltage drops across the other resistors will increase. If a short occurs in a resistor in parallel with other resistors, the voltage drops across the other resistors will decrease, to zero.
Most common failure in a resistor?
This depends on the type of resistor. Carbon composition and metal film resistors typically will burn open, carbon film types can short.
What happens to the value of a resistor when it goes bad?
we can say that a resistor gone bad if 1. its resistance is different than that printed by the color code 2. doesn't conduct any current Resistors normally will burn open. Carbon resistors almost always do this, while wireound resistors can lower in resistance. They may still allow current flow, but it will not be correct.
When do resistors short?
A; occasionally resistors short out especially at hi frequency hi voltage due to external contamination. But usually resistors open up or change to a hi value due to power overstress
Why do resistors need to be precise?
A: Resistors are never precise they normally come with 5% tolerance. However if precise tolerance is needed one can purchase a precise resistor down to 0,01% or even lower % but these resistors are special and made special for each application
How can you fix a heater and AC fan that only work on high?
Resistors control the speed of the AC/Heater fan. These resistors are switched on and off in various combinations to create the different fan speeds. When the resistors burn out your fan will only work on the "HI" setting. The "HI" setting doesn't use any of the resistors and that's why it works. These resistors are near the blower and the blower is beneath the dashboard on the pasenger side. Just have to located resistors now.
What is a pull up resister?
A pull-up resistor common 4K7 is normally used on ICs where a pin is floating to pull the pin to 5 volt or logic 1 it can be pulled to logic 0 internally by the IC it is normally used with MCUs (micro processors)
Why do you use resistor in electronics?
we use resistors to offer opposition to the flow of electric current. Resistors absorbs power from the circuit and convert it into heat that is why they are normally rated for the maximum amount of power that they can salfely handle
Why would the heating-AC fan on a 1994 Dodge Caravan only run on high?
Resistors control the speed of the AC/Heater fan. These resistors are switched on and off in various combinations to create the different fan speeds. When the resistors burn out your fan will only work on the "HI" setting. The "HI" setting doesn't use any of the resistors and that's why it works. These resistors are near the blower and the blower is beneath the dashboard on the pasenger side
Why does lemon water burn my throat?
Lemon water shouldn’t normally burn the throat. You may have a sore throat. Another idea is that you might be allergic to lemon, if lemon normally doesn’t burn your throat.
What is the name teddy short for?
Teddy is normally short for Theodore.
What happens if 3 resistors connected in parallel and one of the resistors is open circuited?
When one resistor in a parallel circuit is open-circuited, it effectively becomes an infinite resistance and no current flows through it. The total resistance of the parallel circuit increases, but the remaining resistors continue to function normally. The overall current through the circuit will decrease because the total current is now only dependent on the remaining active resistors. The voltage across all parallel resistors remains the same as before the open circuit occurred.
