Audio amplifier is very important in sound system, as it make weak sound strong for 8Ω speaker and a 12W amplifier uses IC LF351 and push-pull transistors. This 12 Watt Audio Amplifier Circuit using IC LF351 works on ±12V power and is good for small and medium speakers. Circuit Working: Parts List: Components Values Quantity […]
DIY Projects
Sound-to-Beep Circuit using IC CD4049
Sound-to-Beep Circuit using IC CD4049 is a fun project, where we hear whistle which beep for 3 sec; also circuit is good for door alarm, remote control other sound things. Moreover, it has mic for sound, op-amps from CD4049 and transistor for buzzer and it runs on 3V battery. Circuit Working: Parts List: Components Values […]
Dual LED Temperature Indicator Circuit
Dual LED Temperature Indicator Circuit light one LED when hot and other when cold and it uses IC LM35 temperature sensor, CA3130 op-amp and two BC547 transistors. IC 7805 change 9V to steady 5V and if there is 5V already then we can connect directly, then IC LM35 gives 10mV more for every 1°C rise. […]
High Current 12V Voltage Regulator Circuit using Transistor
Voltage regulators is very important in power supply as they keep voltage steady and even if input voltage changes or load changes. Also, this circuit give steady 12V output with max 3A current and if current need more than 3A then it still works good for regulation. High Current 12V Voltage Regulator Circuit using Transistor […]
10V Switching Power Supply Circuit with IC LM5007
Switching regulator is good to change power, as it control voltage by fast ON/OFF of power transistor and LM5007 IC is high voltage buck regulator and it lower voltage from big input voltage range. Also, this step-down regulator have all parts inside for good and cheap circuit; here, 10V Switching Power Supply Circuit with IC […]
USB to 12V DC Boost Converter Circuit
This USB to 12V DC Boost Converter Circuit works as step-up converter, it take 5V from USB and make 12V DC; also this is useful to power small 12V device from USB, like power bank or computer USB. Furthermore, it uses LT1618 boost IC inside which is good to change low voltage to high voltage […]