Enclosure not stated · 10 knobs
Schumann PLLVerified
Based on the Schumann PLL· 2 other boards clone it
From the post
This is a layout for the original 12V AC version.
There's also a +9V DC schematic but it has never been verified.
You can find all the explanations in FSB and DIY
Layout Updated!
"Con" Switch added
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 48 rows
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Check before you build · 3 values the reader of this layout was not sure of
- 20n ceramic at the top, right of the 4046: printed clearly, unusual value
- 470n drawn as an electrolytic can right of the 33u, lower right: printed clearly as 470n, unusual for a can (could be meant as 470u)
- C3 is given only as a range in the legend (1uF up to 100uF)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 200K | 200k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 240R | 240 | read from the layout by eye | |
| ×1 | 120R | 120 | read from the layout by eye | |
| Capacitors 15 | ||||
| ×1 | 10p | 10p | read from the layout by eye | |
| ×1 | 47p | 47p | read from the layout by eye | |
| ×1 | 100p | 100p | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×1 | 20n | 20n | read from the layout by eye | |
| ×1 | 100n | 100n | read from the layout by eye | |
| ×1 | 220n | 220n | read from the layout by eye | |
| ×1 | 470n | 470n | electrolytic; read from the layout by eye | |
| ×2 | 2u2 | 2.2u | electrolytic; read from the layout by eye | |
| ×3 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 33u | 33u | electrolytic; read from the layout by eye | |
| ×3 | 470u | 470u | electrolytic; read from the layout by eye | |
| C1 | 10uF | 10u | bipolar (B.P.); read from the layout by eye | |
| C2 | 10uF | 10u | bipolar (B.P.); read from the layout by eye | |
| C3 | 1uF | 1u | electrolytic; legend: 1uF up to 100uF; read from the layout by eye | |
| Diodes 1 | ||||
| ×6 | 1N4001 | 1N4001 | D1-D6; read from the layout by eye | |
| ICs 7 | ||||
| IC1 | CD40106BE | CD40106BE | or MM74C14N; read from the layout by eye | |
| ×1 | 4046BCN | 4046BCN | printed 4046 on the board; read from the layout by eye | |
| ×2 | 4017BE | 4017BE | read from the layout by eye | |
| ×1 | TL074 | TL074 | read from the layout by eye | |
| ×1 | LM660CN | LM660CN | printed LM660 on the board; read from the layout by eye | |
| ×1 | LM317T | LM317T | regulator, printed 317T; read from the layout by eye | |
| ×1 | LM337T | LM337T | regulator, printed 337T; read from the layout by eye | |
| Potentiometers 10 | ||||
| Master | A100K | A100k | Potentiometer | read from the layout by eye |
| SquareWave | A100K | A100k | Potentiometer | read from the layout by eye |
| Multiplier | A100K | A100k | Potentiometer | read from the layout by eye |
| Divider | A100K | A100k | Potentiometer | read from the layout by eye |
| LagTime | B10K | B10k | Potentiometer | read from the layout by eye |
| Trigger | B10K | B10k | Potentiometer | read from the layout by eye |
| WaveShape | B250K | B250k | Potentiometer | read from the layout by eye |
| LoopTrack | A500K | A500k | Potentiometer | read from the layout by eye |
| Response | B2M | B2M | Potentiometer | read from the layout by eye |
| PreAmp | A10K | A10k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×2 | 10K | 10k | V+ and V- adjust; read from the layout by eye | |
| Switches 6 | ||||
| Multiplier Sw | 1P12T rotary | 1P12T ROTARY | read from the layout by eye | |
| Divider Sw | 1P12T rotary | 1P12T ROTARY | read from the layout by eye | |
| LoopSpeed | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
| Multiplier Phase | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Divider Phase | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Con | SPST | SPST | read from the layout by eye | |