USB Lamp Circuit for Portable Lighting is good for portable light, as it is easy to use and takes power from USB port of 5V; also it have rechargeable battery which are more useful. USB port give only 100 mA so use LEDs less and in addition this circuit have transistor, diodes, capacitor, resistors, LEDs […]
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. […]
Headphone Amplifier Circuit using Transistors
Headphone Amplifier Circuit using Transistors make weak sound strong so headphones work well, also this circuit is useful when sound is direct from source which is not loud or clear. In addition, in this post we will talk about small 3V transistor amplifier for better sound. Circuit Working: Parts List: Components Values Quantity Resistors (All […]
High Current Adjustable Regulator Circuit with 30V 3A Output
To begin with, in this article IC LM723 chip controls the voltage and it gives stable DC output, voltage and current adjustable; output voltage range is 2V to 37V and up to 150mA and input is max 40V. Here, High Current Adjustable Regulator Circuit with 30V 3A Output is good for lab supply and projects […]
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 […]
Simple Voltage Splitter Circuit using uA741 Op-Amp
This Simple Voltage Splitter Circuit using uA741 Op-Amp is a useful and easy project to make; it split one power supply to two equal parts and make virtual ground in middle. Also, circuit is good for project that need two power supplies but have only one power source and current depends on op-amp specifications. Here, […]