This circuit shows a Low Current Controlled Battery Charger Circuit using LM723 IC and 2N3055 power transistor. Furthermore, this design mainly gives constant charging current to battery, so battery gets safe charging without over current damage. First, AC supply comes from transformer and then circuit converts it into DC and after that LM723 controls voltage […]
Voltage Regulator
IC 7805 12V To 5V 2A Boost Converter Circuit
Sometimes 7805 regulator is not enough, as it gives only around 1 amp current; however, many projects need more current for example motors, relays, LED strips and logic boards together. Therefore, we need a simple solution, so we used an external power transistor TIP42 with 7805 IC, as this transistor boosts output current with this […]
IC LM309 Based 5 Volt Power Supply Circuit
Today, many electronic circuits require a stable 5V DC supply; however, the AC mains voltage is much higher, so the circuit must reduce the voltage before converting it to DC. Furthermore, voltage regulation is important, so this circuit uses a voltage regulator, also this article explains about simple IC LM309-based 5V power supply circuit. Moreover, […]
Regulated 9V Power Supply Circuit using IC 7809
In many electronic projects, we need clean and fixed voltage for proper working, so 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 and also this power supply is very useful for small electronic […]
Simple 5V to 3.3V Converter Circuit using IC LD33V
Here, is an article for Simple 5V to 3.3V Converter Circuit using IC LD33V, also this circuit is cheap, works from 5V input and it uses LD33V voltage regulator IC. We just need to take a phone charger and put a charger output to regulator input and then regulator will gives stable 3.3V output which […]
7812 Based 12 Volt DC Power Supply Circuit
Many electronic projects need 12V clean power for output devices like LCD, graphic LCD and DC motors. A simple AC to DC converter using 7812 regulator, provides fixed 12V for small devices and general use; also big 100uF capacitor remove big AC ripple from rectified DC. Then small 0.1uF capacitor remove small ripple from regulated […]