Power supply is very important in electronics and most electronic circuits need stable DC voltage. However, AC voltage comes from mains and therefore the conversion is required. This Transistor Based 5V Linear Power Supply Circuit gives regulated 5 volts DC. It uses simple components, gives high current and is useful for labs and projects. Circuit […]
Power Supply Circuits
5V Regulated Power Supply Circuit using Transistors
A 5V regulated power supply is very important in electronics as it is used to run many digital circuits, for example, microcontrollers, sensors and logic ICs. This 5V Regulated Power Supply Circuit using Transistors gives stable 5 volts DC output. It uses transistors for voltage regulation and so it can handle more current than IC […]
220V AC Live Detection and Interface Circuit
Handling 220V AC directly is very dangerous, but still we need to know mains is ON or OFF. So, this 220V AC Live Detection and Interface Circuit is useful as it solves this safety problem easily. This circuit senses mains voltage safely and it sends clean logic level signal. Optocoupler is used for isolation, so […]
Transformer Based 12V DC 3A Power Supply Circuit
Need a strong 12V DC supply for our electronics projects? A stable and powerful DC supply is the heart of any electronics project. This Transformer Based 12V DC 3A Power Supply Circuit delivers clean and reliable power. It converts AC mains into smooth DC power and it provides high current with low noise output. It […]
Regulated 9V Power Supply Circuit using IC 7809
In many electronic projects, we need clean and fixed voltage for proper working. This Regulated 9V Power Supply Circuit using IC 7809, it takes higher DC voltage and gives stable 9V output. IC 7809 is easy to use and gives safe, constant voltage. This power supply is very useful for small electronic circuits and beginner […]
Soft ON Circuit for 12V Halogen Lamp
In this post halogen lamp draws very high current at switch ON. Cold filament resistance is very low and this causes sudden inrush current. Lamp life becomes short with this circuit protects lamp and it also protects outside fuse and switch indirectly. Soft ON Circuit for 12V Halogen Lamp reduces this problem. Lamp voltage rises […]