In this article, resistors can provide basic speed control, but they cannot adjust motor speed efficiently or smoothly. Therefore, this smart PWM Motor Speed Control Circuit using Two Transistors offers a more effective solution. It works like a dimmer switch for the motor and we can turn a knob like a potentiometer to change how […]
Transistor Circuits
Microphone Preamplifier Circuit using Two Transistors
Imagine our voice is a tiny whisper going into a microphone. This Microphone Preamplifier Circuit using Two Transistors works like a small megaphone; it makes the whisper louder so the main amplifier can clearly boost our voice. Circuit Working: Parts List: Components Values Quantity Resistors (All resistors are 1/4 watt unless specified) 100k 1 120k […]
“Hee Haw” Siren Circuit
The “Hee Haw” Siren Circuit is a fun sound project that makes a high and low noise like “Hee Haw” instead of one long sound. Also, simple electronic components such as resistors, capacitors, transistors and sometimes ICs make up the circuit. The pitch of the sound goes up and down again and again and we […]
Fog Horn Circuit
Ever wondered how fog horns make that deep, spooky sound? In the same way, this Fog Horn Circuit is a small sound-making device that uses electronics to produce the low, rising and falling fog horn noise. Moreover, people use these circuits for fun projects as well as for learning electronics. Circuit Working: Parts List: Components […]
Simple Guitar Fuzz Circuit
Imagine we play guitar but we want loud, fuzzy, buzzing sound which is not clear; so a Simple Guitar Fuzz Circuit is like small monster in a box. It changes our normal sound and makes it fuzzy, noisy or roaring; rock and blues players use this as it comes in small box with buttons we […]
Simple Transistor Tester Circuit
Transistors are small switches; but how to check if they work or what type they are? then this Simple Transistor Tester Circuit is like a transistor checker. It is an easy DIY project which uses few parts and it also tells us if transistor is good or bad and also shows if its NPN or […]