I made this in 2007, the purpose from this project is to make compact audio power amplifier with minimal budget without forgetting about the quality of the sound it's self.
The enclosure of power amplifier is from ATX computer power supply case junk, makes it's compact and minimalist. [ ... ]

This is the only craziest project I ever made, beginning in June 2007 and completed in November 2007. Very complex circuits, and uses a lot of IC (about 38 IC). If you think this is a waste, yes! Indeed. However, why do I keep making this project? The reason is, I want to know how the phone working  [ ... ]

Introduction Also called as Power Op-Amp or gainclone, this amplifier is simple and compact, only with a TDA2030 / TDA2050 IC and some passive component we can build the audio amplifier. The power is not quiet high, around 18 Watt to 50 Watt RMS, so this amplifier is suitable for bi-amp and tri-amp [ ... ]

Charging Method In this project, I am used constant charging method. This refers to Rechargeable Battery Technical Handbook recommendation from several battery companies, like GP Battery and SANYO. This method can be used to both NiCad and NiMH battery. The advantages of the constant current chargi [ ... ]

We all know the transistor has three wires, but the position of three wires on actual physical package are not arranged in any universal, standardized order. So how to identification which wire is base (B), collector (C), and emitter (E)?

Making PCB layout with a laser printer is a easy, quick, and cheap. This technique is commonly referred to as a technique Transfer Paper.