August 2010

This month’s highlights

PIC-based Flexitimer

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.

August 2010 files for download -

  • Light Box
  • Flexitimer UPDATED

Printed Circuit Boards

We supply PCBs for all our projects going back to 2013.

New PE service – Programmed PICs

Buy programmed PICs for most of our projects.


Lost your password? Register


Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.

ten + 9 =

Lost your password? Login

Shopping cart
There are no products in the cart!