August 2010 Issue
A summary of this month's contents.
This easily programmed low-cost timer module offers up to 54 different timing periods, with independent on-off periods ranging from one second to over three days. One-shot or continuous modes, relay output. 12V operations.
Ultra Low Distortion 200W power amplifier (Part 1)
A truly exceptional new class-AB design using Thermatrak power transistors for maximum stability and protection. Producing high power levels (200W into 4R, 135W into 8R) at very low distortion (rated <0.008% from 20Hz to 20kHz @ 8 ohm). Input sensitivity 1.26V rms, 12k. Finely-tuned double sided pcb design eliminates unwanted magnetic fields to enhance its terrific performance.
DSP Musicolour Part 4: Adding a Remote Control
With a very small PCB add-on, the DSP Musicolour can be operated via an infra-red remote control.
Special feature: Making your own PCBs
Focusing on the user-friendly Seno GS Etch-in-a-bag to make printed circuitboards.
UV Light box for PCBs
A PIC-based digital timer and UV tube set makes for an exposure unit that helps produce more consistent results. Full details of a 4-tube UV unit are included.
Also in this issue:
- PIC n MIX - the Propeller processor
- Interface – for PC users - Visual Basic 2010
- Net Work – the Internet column highlights anti virus packages that fail to detect a potential threat
- Circuit Surgery - EPE’s in-house considers potential dividers, and introduces Thévenin’s Theorem.