7812 Pinout: An in-depth Guide
Regulators are essential for electric components. Usually, electric devices have various lower and upper limits of voltages they can handle without issue. Yet sometimes, the load conditions and input voltages may vary.
Regulators work by helping maintain a fixed output voltage no matter the variation to ensure proper electric device functioning.
This article takes a comprehensive look at the features, specifications, typical application circuits, etc.
Keep reading to learn more.
7812 Pin Configuration
The pinout diagram below explains the 7812 pin configuration
Where
1- Input pin
2- Ground pin
3- Output pin
Features and Specifications
Replacement and Equivalent
Here are some standard voltage regulator ICs you can use If you cannot find a 7812 pin but still need a regulator that achieves 12v output.
Typical Application Circuits
As earlier stated, the 7812 pinout is a regulator that helps maintain a constant output voltage in circuits. Below we look at some courses that can utilize a 7812 regulator.
First, let us look at two low current circuits that use a 7812 pinout.
Low current circuit 1
The above diagram showcases a +/-12 dual voltage or dual-powered circuit that uses a 7812 and 7912 pinout. Here the LM7812 IC regulator achieves +12V while the LM7912 regulator IC produces -12V.
This Low current circuit can deliver no more than 1 Ampere, making it suitable to be used in a preamplifier tone manager that has an AMP-OP course.
You can use the circuit only if your load does not exceed 300ma.
In the low current circuit, you can notice the unregulated supply of power shown by F1, D1, D2, C2, C1, C4, C4, S1, and T1.
Also, to reduce the ripple voltage that may arise from the two half-wave rectifier diodes in half-wave rectifier form.
Experts recommend the use of double filtering capacitors (C2and C4 in this case)
Note that the circuit above uses a CT15V and AC15V 300mA powered transformer .
As a result, when the 30V voltage is converted to direct current volts ( DCV), it rises to 42voltage direct current (VDC).?
Then all the input 21VDC voltage gets referred to the 7912 and 7812 pinouts.
Finally, the two regulators then maintain a constant output voltage.
Low current circuit 2
The above diagram utilizes only two capacitors, a power source, and the 7812 IC regulator.
Looking at the voltage probe, you will notice that a positive input voltage of 25V passes through the 7812 regulators.
However, the voltage released or output is 12V DC (direct current), showing a voltage difference.
Finally, the circuit diagram above uses ceramic capacitors as experts consider them faster than electrolytic capacitors.
Look at the diagram below to understand how the 7812 IC works to achieve a constant voltage preventing a voltage drop.
High Current Circuit
You can use the above circuit if you seek a 12V dual power supply that can comfortably handle 500mA.
The high current course above shares many similarities to the first low current circuit; nevertheless, there are slight component changes on it, such as;
Parts you will need to make the above circuits.
How to Safely Long Run in a Circuit?
As with all-electric components, there are some measures you need to put in place to ensure effectiveness, longevity and reduce the risk of accident occurrence.
They include;
Firstly, ensure you check and confirm the pinout in advance of using it.
Secondly, store the 7812 pinouts in temperatures at a minimum of 65 degrees Celsius and a maximum of 150degrees Celsius.
Third, assemble the components of the integrated circuits on a perforated board.
Then, avoid operating the device in temperatures below 0 degrees Celsius and temperatures above 125degress Celsius.
When using the regulator, always use a heat sink that matches the heat produced. Moreover, you can use the formula; the heat produced = (input V less 5) × Output current for adequate heat sinking.
Lastly, operate your device within the minimum input voltage requirement and the maximum input voltage limit.
Applications
Summary
Regulators have primarily reduced cases of electric device failure, thereby ensuring a longer lifespan for the devices.
Hence, after going through the article, we hope we have answered all your questions concerning the 7812 pinouts.?
If you need more information on regulators, contact us , and we will gladly provide it.