This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss amplifier. This circuit was already […]
Electronic Schematic Diagram
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 addition to providing good sound […]
Active Speaker Protector
This is a simple active speaker protector circuit which has a very important use, expecially to protect the loudspeakers of a audio system. It prevent […]
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 quite simple and easy to […]
Triac, SCR, Transistor Tester
This is the circuit diagram of TRIAC, SCR and Transistor tester. This is a very simple circuit which can be used for testing of SCRs […]
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 really simple device that allow […]
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 using a photo interrupter 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 using induction motor. The speed […]
250W RMS Power Amplifier Legend Stage Master
Here is the 250W RMS power amplifier circuit called Legend-Stage Master. This is the previous version of Legend-Stage Master MK2. The circuit is based on […]
Unipolar Stepper Motor Driver
This is the circuit design of unipolar stepper motor driver to control unipolar stepper motors with 5, 6 or 8 wires. It uses four MOSFET […]
