Schematic Power Amplifier and Layout

PCB XR2206 Function Generator PCB XR2206 Function Generator

Electric Heating circuit Electric Heating and Solar Water Heating System Controller Circuit

Power Supply Control Transistor using BC549, BC559, BD139

LM1881 is used to do all the grunt work of separating the sync signals from the composite video. The chip provides the vertical sync on pin 3 for the vertical oscillator, and composite sync on pin 1 for the horizontal oscillator. The intensity signal comes from the composite video signal itself, but is negative. I […]

Audio Amplifier Circuit Using STK439