This post shows very easy way to make Simple Automatic Battery Charger Circuit using One Transistor and with few parts. This circuit charges battery by itself like small machine. It uses only one transistor, one resistor and one LED. Good for charging 9V battery where LED shows when charging. But this is basic charger with […]
Transistor Circuits
Transistor 2N3055 Circuit with 1.5 Million High Gain
Transistor 2N3055 Circuit with 1.5 Million High Gain is like normal volume knob it can make sound more but not too much. If we want very loud like 1.5 million we need to trick it little bit. One way is it uses two transistors together like double volume knob and this is called the Darlington […]
Simple Adjustable Zener Diode Circuit
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 […]
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. […]