Diagrams
Zip Files
Parts List
|
Resistors (all 0.25W, 5% or better) |
|
| R1,2 | 10K |
| R3,7,11 | 22K |
| R4,8,12 | 470R |
| R5,9,13 | 100R |
| R6,10,14 | 270R |
|
Capacitors |
|
| C1 | 10uF 16V radial elect |
| C2 | 10nF Ceramic disk |
| C3 | 220uF 16V radial elect |
|
Semiconductors |
|
| IC1 | NE555 |
| IC2 | 4017 |
| IC3 | 4075 |
| IC4,5,6 | MOC3041 |
| TR1,3,5 | BC548 |
| TR2,4,6 | BT137 (see text) |
| D1 | Yellow LED |
| D2 | Green LED |
| D3 | Red LED |
| D4,5 | 1N4001 |
| SK1,2,3,4 | 2 way 0.2" PCB terminals |
| X1 | 3 way 0.2" PCB terminal |
| FU1,2,3 | 20mm PCB fuseholders with F-500mA fuses |
| X1 | 6-0-6V 100mA (wire ended) |
The plastic case used for the prototype is made by Bafbox, and is available from RS/Electromail, stock no 506-788.
This project, including all text, images and diagrams, is copyright 1991 - 2003 Paul Stenning. No part of this article may be reproduced in any form without prior written permission from Paul Stenning and WallyWare, inc. All details are believed to be accurate, but no liability can be accepted for any errors.
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