Enclosure not stated · 2 knobs
Univox CO-105 Uni-Comp
Based on the Univox CO-105 Uni-Comp· 1 other board clones it
- Category
- Compressor
- Build
- Vero· 15×14· 10 cuts, 6 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Compressor, Univox
From the post
A quite simple old japanese compressor by Univox. For part substitutions (since stock parts is long gone obsolete...) the transistor were a low gain NPN silicon so PN2222 or 2N3903 should work. MD234 were silicon signal diodes so 1N4148s is a near enough sub. The spec of the original vactrol remains unknown so socketing a LED/LDR combo seems to be a wise decision. Schematic, gutshots and info at FSB.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 23 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- D4 at col 12 rows K-M: legend calls the 1N5817 'D5', no D5 is drawn; D4 assumed to be the 1N5817
- 3.3M at col 9 rows F-H: partly covered by a cut marker, reads 3,3M
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 1.2K | 1.2k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×1 | 6.8K | 6.8k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×1 | 3.3M | 3.3M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 33uF | 33u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 4 | ||||
| D1 | 1N4148 | 1N4148 | 1N4148 / 1N914 (MD234 in original); read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | 1N4148 / 1N914 (MD234 in original); read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | 1N4148 / 1N914 (MD234 in original); read from the layout by eye | |
| D4 | 1N5817 | 1N5817 | legend lists it as D5; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | PN2222 | PN2222 | PN2222, MPSA06 etc (2SC1312G in original); read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | read from the layout by eye | |
| Opto 1 | ||||
| ×1 | LDR | LDR | LDR-LED combo: test (MCD527 vactrol in original); read from the layout by eye | |
| Potentiometers 2 | ||||
| Comp | B1M | B1M | Potentiometer | read from the layout by eye |
| Level | B2K | B2k | Potentiometer | read from the layout by eye |
| LEDs 1 | ||||
| ×1 | LED | LED | on board, paired with the LDR; read from the layout by eye | |
Other boards based on the Univox CO-105 Uni-Comp
- Univox Uni-Comp Tagboard Effects