Mike Ellis – Electronic Projects Tutorials

The Multimedia Electronic Literature & Learning Internet Site A website dedicated to the advancement of electronic engineering skills by Mike Ellis.Complete schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output.

Mike Ellis – Electronic Projects Tutorials

68HC11 Function Generator

Oscilloscope Block Diagram and Schematics

Dual 0-15 Volt Tracking Power Supply

Audio Amplifier – The audio amplifier shown below provides 14 watts of power, but can provide much more simply by increasing the power supply voltage. This amp was built in 1975 and has worked reliably ever since. The power amp portion was published in Popular Electronics in the mid-1975s, preamp and bass and treble controls.