This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss…
This is the schematic diagram of 400W RMS stereo power amplifier which use power transistor to work. This amplifier in…
This is a simple active speaker protector circuit which has a very important use, expecially to protect the loudspeakers of…
This is the circuit diagram of two tones train horn which built based dual timer IC NE556. The circuit is…
This is the circuit diagram of TRIAC, SCR and Transistor tester. This is a very simple circuit which can be…
Here is the USB printer switch circuit design with two USB input ports and one USB output port. This a…
This is a really simple smoke alarm circuit design. The circuit consists of two important modules that are sensor module…
This is the digital fan speed control circuit design that can be utilize to control the speed of 220V fans…
Here is the 250W RMS power amplifier circuit called Legend-Stage Master. This is the previous version of Legend-Stage Master MK2.…
This is the circuit design of unipolar stepper motor driver to control unipolar stepper motors with 5, 6 or 8…