Vermes
Advanced Member level 4
It is a renovation of an old colour-phone (PCB broke and paths disappeared).
Elements used:
- thyristors bt151
- 12V 21W car bulbs
- glares from headlights
- glass from semaphores
The board was made using a marker. The board and thyristors with a heat sink were screwed to the parting.
The colour-phone was based on the scheme:
Pictures:
Video:
Link to original thread (useful attachment) – Mój kolorofon c23 na mocniejszych tyrystorach