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Why isn't 7805 voltage regulator putting out 5v Its putting out 15.6v?
Wiki User
∙ 13y ago
There could be a number of reasons. A 7805 has three pins: Voltage in, voltage out and an earth.
If the earth is not tied to the earth reference (ground) of the circuit, the output will be held close to the input voltage.
If there are no suppression capacitors on the inputs and outputs, high frequency oscillation can be present and at a level where some meters will read it as a DC shift.
The IC may be damaged. It has a maximum input voltage of around 35V (dependent on the specific IC). Exceeding the input voltage doesn't do the IC any good at all.
The other possibility is that the output side of the IC is being fed with a voltage from another part of the circuit.
Keep taking the meter readings with the IC in circuit and out of circuit and one of these errors is likely to show up.
Wiki User
∙ 13y ago
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What ia ic7805?
7805 ic is a voltage regulator,up to 5 Volts can maintain.
What is the voltage of ic 7805?
The 7805 is a three terminal +5 volt regulator.
What is function of 7805 IC?
Ic 7805 we are mostly used for regulator & its minimum input voltage is 7.2 V. Sandeep Chauhan
Why you use capacitor with voltage regulator ic 7805?
in ic 7805 their is two capacitor is used one of them is used for the settling/transient time and another is used to provide inductive effect....
How voltage stays constant in a closed electrical circuit?
A voltage regulator. Examples are the 78dd series of regulators where dd is the voltage, e.g. 7805, 7812. These work with a positive rail, the 79dd regulators work with a negative rail.
What ia ic7805?
7805 ic is a voltage regulator,up to 5 Volts can maintain.
What is the voltage of ic 7805?
The 7805 is a three terminal +5 volt regulator.
What is ic 7805?
7805 ic is a voltage regulator,up to 5 Volts can maintain
Why use7085 ic in voltage regulator?
It will be 7805 in which 7 is company code; 8 means positive voltage & 05 is amount of positive voltage output.
What is function of 7805 IC?
Ic 7805 we are mostly used for regulator & its minimum input voltage is 7.2 V. Sandeep Chauhan
Why you use capacitor with voltage regulator ic 7805?
in ic 7805 their is two capacitor is used one of them is used for the settling/transient time and another is used to provide inductive effect....
You are making a battery low indicator with IC 7805 why is IC 7805 used in it?
A: an lm7805 Is a positive regulator if enough voltage is available it will regulate to ~5 volts that is only purpose no matter how it is used.
What is an 7805 regulator?
7805is a voltage regulator integrated circuit. It is a member of 78xx series of fixed linear voltage regulator ICs. The voltage source in a circuit may have fluctuations and would not give the fixed voltage output. The voltage regulator IC maintains the output voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is designed to provide. 7805 provides +5V regulated power supply. Capacitors of suitable values can be connected at input and output pins depending upon the respective voltage levels.Pin Diagram:Pin Description:Pin NoFunctionName1Input voltage (5V-18V)Input2Ground (0V)Ground3Regulated output; 5V (4.8V-5.2V)Output
What are the Advantages and disadvantages of IC voltage regulator?
IC voltage regulator performs better than any analog voltage regulator. Some IC regulators IC no. are given below- Positive IC voltage regulator- 78xx Negative IC voltage regulator-79xx where xx varies according to the use of ICs raring. as 7805 gives the positive 5 Volt & 7905 gives the negative 5 volt.
What is programmable output in voltage regulators?
A: The output voltage a 7805 can becomes a 1 voltage regulator of higher voltage the 5 volts if so chosen. However it can never becomes less then 5 volts not unless a negative voltage source is found.
How voltage stays constant in a closed electrical circuit?
A voltage regulator. Examples are the 78dd series of regulators where dd is the voltage, e.g. 7805, 7812. These work with a positive rail, the 79dd regulators work with a negative rail.
Does voltage regulator increase or decrease the current input?
A DC voltage regulator gives a constant output voltage provided the input voltage is at least 1.5 v higher, up to a given limit. The input current is slightly more than the load current, because a small amoutn of current is needed for the voltage regulator circuit. Check the datasheet of the component which you are using to find the limits. 7805 IC can give upto 1A of current if there is adequete heatsinking.
