200W Power Amplifier Using Transistor
This is a 200W power amplifier circuit project. The circuit features high power, good definition and very low noise. It…
Small Sound Amplifier for Ears (Hearing Aid)
This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss…
400W RMS Stereo Power Amplifier
This is the schematic diagram of 400W RMS stereo power amplifier which use power transistor to work. This amplifier in…
Active Speaker Protector
This is a simple active speaker protector circuit which has a very important use, expecially to protect the loudspeakers of…
Two Tone Train Horn based NE556 Dual Timer
This is the circuit diagram of two tones train horn which built based dual timer IC NE556. The circuit is…
Triac, SCR, Transistor Tester
This is the circuit diagram of TRIAC, SCR and Transistor tester. This is a very simple circuit which can be…
USB Printer Switch 2 Input Ports
Here is the USB printer switch circuit design with two USB input ports and one USB output port. This a…
Simple Smoke Alarm using Photo Interrupter Module
This is a really simple smoke alarm circuit design. The circuit consists of two important modules that are sensor module…
Digital Fan Speed Control
This is the digital fan speed control circuit design that can be utilize to control the speed of 220V fans…