This article show a special trick to make a Simple Metal Detector Circuit, which uses simple circuit not like other circuits and needs only one transistor. The circuit find metal by catching signal from a normal radio. What is a Metal Detector: A metal detector is an electric circuit that checks whether metal is nearby, […]
Mini Projects
Simple Beat Frequency Oscillator (BFO) Circuit
Simple BFO circuit is small electronic circuit which make signal sound when mix with other signal; also this circuit help to hear weak radio signal like in old radio or metal detector. Moreover, it is easy to build and uses one transistor part called a bipolar junction transistor (BJT). What is Beat Frequency Oscillator: BFOs […]
Simple Adjustable Oscillator Circuit using Two Transistors
To begin with, this article for Simple Adjustable Oscillator Circuit using Two Transistors show how to make small sound circuit using only two transistors! Hence, when we turn the knob the sound goes high like beep or low like growl, also we can use four AA battery or small wall power to run this circuit. […]
Simple Car Fused Tail Lamp Indicator Circuit
Simple Car Fused Tail Lamp Indicator Circuit tell how to make one easy circuit for checking car back lights are ON or not. Also, it uses one common part called resistor to know if light are getting enough power and if light goes OFF the circuit gives an alarm to show problem. Moreover, this thing […]
Simple Delay Timer Circuit
This article tell how to use simple parts like transistor, capacitor and diode to make Simple Delay Timer Circuit. Also, this timer can wait some time like few seconds or minutes before turning something ON. Hence, many circuits need this kind of delay timer to ensure operations happen in the correct order. What is a […]
Simple Hum Free Regulator Power Supply Circuit
This Simple Hum Free Regulator Power Supply Circuit uses one common transistor 2N3055 to make power supply clean and stable; also it stops unwanted noise like hum sound which sometimes come from power supply. What is a Hum Free Regulator Power Supply: A Hum Free Regulator Power Supply circuit reduces or removes hum noise that […]