- Circuit Diagram Page 1
- Circuit Diagram Page 2
- PCB Artwork
- PCB Component Layout
- Interwiring Diagram
- Front Panel
Resistors (all 0.25W 5%)
|VR1-5||10K Horiz Preset|
|Slide Control||10K Dual Lin Pot|
PCB, Case, 1 Pole 12 Way switch, DPDT Toggle Switch, SPST Toggle Switch, Two BNC Sockets, 12-0-12V 250mA Transformer, Mains Flex, Cable Clamp, Knobs.
The plastic case used for the prototype is made by Bafbox, and is available from RS/Electromail, stock no 506-788.
The slide control pot was supplied by Maplin, note that M2 x 12mm countersunk mounting screws and 6mm spacers must be purchased separately.
The non-polarised capacitors should be 0.2" pitch, others sizes may be suitable if the leads are bent. See the notes in the construction section regarding capacitor types. Low cost ceramic disk capacitors are suitable.
Since the unit is likely to be permanently connected to the mains, a 250mA transformer should be used. The 100mA types run fairly hot at a continuous 50mA.
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.