This article for Simple Low Battery Indicator Circuit using Two Transistors tell how to make small circuit for battery device. When battery goes low it uses only few parts like two transistors to turn ON one LED light. So this way we can know when to change battery before device stop working. Circuit Diagram: Parts […]
Transistor Circuits
300 Watt Power Amplifier Circuit using Transistors
Hey music lovers! Want your speaker sound REALLY loud? This 300 Watt Power Amplifier Circuit using Transistors show how to make very strong amplifier circuit. It can give 300 watt sound with 8 ohm speaker or even more power with 4 ohm speaker. WARNING: Be careful, this circuit uses high voltage and can be dangerous. […]
Simple Phase Shift Oscillator Circuit using a Single Transistor
Simple Phase Shift Oscillator Circuit using a Single Transistor is like a special electric circuits. They make electric go up and down like water wave. These waves can be soft or hard and also look like curved. How fast wave go up and down are controlled by the circuit control There are many types of […]
Adjustable Voltage, Current Power Supply Circuit using Transistor 2N3055
This Adjustable Voltage, Current Power Supply Circuit using Transistor 2N3055 talks about how to make simple and useful power circuit. This circuit can change voltage and current so it work for many electronic projects. It uses one popular transistor called 2N3055 and some other parts. WARNING: Be careful, High voltage can be very dangerous. Do […]
220V Over Under Voltage Cut Off Circuit using Transistors
This 220V Over Under Voltage Cut Off Circuit using Transistors help to protect electric things from too high or too low voltage. It uses two transistors and some easy parts. When voltage goes too much high or too much low then circuit cuts the power. It is good for home use and might surprise some […]
220V Inverter Circuit using 2N3055 Transistors
This article show how to make a strong 220V Inverter Circuit using 2N3055 Transistors. It can change 12V battery like car battery into 220V electric for home. It is easy to make and does not need many parts, and work very good. WARNING: But be very careful. Homemade inverter can be dangerous always check safety […]