SPT - 1971
This comprehensive technical collection from 1971 contains multiple detailed electrical schematic diagrams for photographic flash units from the SPT brand. The document spans four pages of professional wiring diagrams and electronic circuits.
The first page presents the schematic of a variable flash unit (Vivitar Flash Unit Model Unknown) featuring components including transformers, high-voltage capacitors (300V, 350V, 500V), various resistors, and a flash tube. The circuit details power supply, synchronization circuits, and triggering systems.
The second page illustrates the schematic of a Goldcrest SR-30 flash unit with neon tubes, charging circuits, transformers, and control systems.
The third page shows the Goldcrest SR-35 flash unit schematic with similar components organized in modular fashion.
The fourth page contains the complete schematic of a Vivitar Speedlight 40 flash unit, demonstrating the integration of multiple synchronization circuits, transformers, filtering capacitors, and protection systems.
Each schematic includes precise component values (resistors, capacitors, inductors), operating voltages, and connection points. These documents serve as an essential resource for technicians engaged in repairing photographic equipment and electronic flash units from this era.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 4
- Size
- 908.0 KB
- Category
- Photography