Think like small switch which controls how much voltage go through. Normal Zener diode is like one fixed switch which let electricity pass only when voltage goes above certain level. But this Simple Adjustable Zener Diode Circuit is like fancy dimmer switch. We can change voltage level using some parts like mostly one thing called […]
Transistor Circuits
Simple Heat Sensor Circuit using a Single Transistor
This Simple Heat Sensor Circuit using a Single Transistor and one special resistor like thermometer. When it get hot this resistor changes to how it work because of which the transistor sees this change. Transistor work like door and if temperature changes it opens or closes for electric. So the circuit can detect when something […]
Simple Low Battery Indicator Circuit using Two Transistors
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 […]
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 […]