Schematic Power Amplifier and Layout

Boss audio channel amplifier TDA1554 11w 4 Channel Home Audio Amplifier circuit

DTMF TOUCHTONE GENERATOR DIP16 TCM5089N DTMF TOUCHTONE GENERATOR DIP16 TCM5089N

This article means to utilize your old PC to be come a simple controller. Many old PC like 8088 type, 8086, 80286, 80386, or even 80486 already become an obsolete systems. This board using 8-bits of LPT printer parallel data port (DP) to activate the relays. LPT printer parallel port also have 4-bits additional port […]

How to make solar NiCad simple but useful ? Reasons for using Solar Power Panel are: solar energy is clean, environmentally friendly, reducing pollution, reducing greenhouse gases and stopping global warming, as a flexible source of energy and require little maintenance, will help you save money in the long run. Using the charger and solar […]

Auto Car Battery Testers circuit using LM3914