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Here is circuit 9V power supply regulator with battery 12V backup system.
Use IC 7812 and 7805 control voltage output by R3 1K output 9V 1A max. This is a 9V power supply which will work even on power failure. It uses a rechargeable battery and regulators. A transformer with 15-0-15 AC volts output is required. In the first regulator U1 the output is lifted up by 1.4V and in the second regulator U2 by a resistor divider. In the second regulator the voltage across resistor R3 is 5V, so the current is 5V / 1K = 5mA this adds to the quiescent current of 5mA from the regulators ground terminal and flows into the resistors R1 and R2 in parallel which form 404 ohms, 10mA thru 404 ohms is 4V. So the output will be 5 + 4 = 9V. Note that the charge and discharge paths of the battery are separated with diodes.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoit is a 3-terminal device: 1. input, 2. output, 3. earth.
The input is a voltage between +14 and +20 v, the output is +12 v at up to 1 amp.
Other positive voltage regulators are 7805, 7806, 7809, 7815, 7818 depending on the regulated voltage required.
For negative voltage regulators use 7905, 7906 . . etc.
Wiki User
∙ 11y agoThe 7812 is a positive analog voltage regulator with a 12 volt output
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Use of ic regulator?
To regulate a powersupply. The variations of voltage will be nullified by this ic. For example a three legged ic say number 7812 gives 12v dc supply if you are applying a voltage of 13 to 24vdc at a maximum current rate of 1 ampere. If applied voltage is 24v the dissipation will be approximately 12w.
How does ic 7447 works?
can i use ic 7476 as time delay
Why do you need to cascade ic in an amplier?
Because , it will be easier to use , remove & replace a cascaded ic .
What is the use of 7404 ic?
6 not gates
What is use of 7486 ic?
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Regulator ic 7812 diagram circuit?
internal diagram of ic 7812
Function of ic 7812?
it is ic of 78 series.its voltage is 12V
What is 7812 voltage regulator?
The 7812 voltage regulator is a three terminal, single IC, +12V regulator.
Use of ic regulator?
To regulate a powersupply. The variations of voltage will be nullified by this ic. For example a three legged ic say number 7812 gives 12v dc supply if you are applying a voltage of 13 to 24vdc at a maximum current rate of 1 ampere. If applied voltage is 24v the dissipation will be approximately 12w.
Can you explain how to connect a type 7812 voltage regulator ic?
A Type 7812 voltage regulator ic (integrated circuit) is 3-terminal device with separate pins for Input, Output and Ground.Basically you connect a suitable source (a battery or a power supply unit that plugs into the house's main electricity service) to the Input pin and the Ground pin. Connect your load device (the equipment which requires a regulated voltage) to the Output pin and the Ground pin.You can find circuit diagrams for using this type of voltage regulator IC in electronics textbooks and often in the catalogs produced by suppliers of electronic components.For technical and licensing reasons circuit diagrams cannot be included within the answers on this site.The Related Link shown below gives detailed information about the ic itself, including its own internal circuit diagram.
What elements do an integrated circuit contain?
The main elements present in typical IC chips are:siliconoxygenaluminumboronnitrogenphosphorusindiumarsenicThe main elements present in typical IC lead frames/pins etc. are: copperaluminumtingoldThe main elements present in typical IC plastic packages are: carbonhydrogenoxygenphosphorussulfur
How does ic 7447 works?
can i use ic 7476 as time delay
What is 7812 in scientific notation?
7.812 × 103
What are the features of ic 7812?
- Output current in excess of 1A - Internal thermal overload protection - No external components required - Output transistor safe area protection - Internal short circuit current limit - Available in the aluminum TO-3 package
What are the release dates for The Young and the Restless - 1973 1-7812?
The Young and the Restless - 1973 1-7812 was released on: USA: 3 February 2004
Explain the pin dia gram of IC 7812 belonging to category of logic gates?
The 7812 is not a logic gate. It is a three terminal voltage regulator with an output of +12V.Looking at the pins of the TO-220 device, with the flat side down, the left pin and the case is common, the center pin is input,and the right pin is output. For the smaller TO-92 78L12 device, the left pin is output, the center pin is common, and the right pin is input
How me can use 4027 ic in switching circuit?
WHAT IS THE PURPOSE OF IC 4027 IN SWITCHING CIRCUIT
