books by author
R. A. Penfold
How to Use Oscilloscopes and Other Test Equipment
High Power Audio Amplifier Construction (BP S.)
50 Complementary Metal-oxide Semiconductor IC Projects
Using Flash MX: BP527
Audio Amplifier Construction
Practical Alarm Projects
An Introduction to PIC Microcontrollers
Micro Interfacing Circuits: Bk. 1
Micro Interfacing Circuits: Bk. 2
Electronic Music Projects
More Advanced Electronic Security Projects
Electronic Security Devices
Simple Short Wave Receiver Construction