Enclosure not stated
Vox and Guyatone 1900 Phaser
Based on the Vox and Guyatone 1900 Phaser
- Category
- Phaser· Phasers
- Price
- see vendor
- Tags
- Phasers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 74 rows
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Check before you build · 8 values the reader of this schematic was not sure of
- R4: '120K' blurred, could be 100K
- R9, R13: designators blurred
- R38: drawn designator reads like R36, clashing with R36 150K
- R39: value could be 2.2K or 2.4K
- C4, C8: could read K0.047 rather than K0.0047; matched to C2/C6
- C13: '0.047' faint
- R31, R33: may be panel pots rather than trimmers
- S2: may be SPDT
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 39 | ||||
| R1 | 10K | 10k | read from the schematic by eye | |
| R2 | 220K | 220k | read from the schematic by eye | |
| R3 | 120K | 120k | read from the schematic by eye | |
| R4 | 120K | 120k | label blurred; read from the schematic by eye | |
| R5 | 10K | 10k | read from the schematic by eye | |
| R6 | 10K | 10k | read from the schematic by eye | |
| R7 | 120K | 120k | read from the schematic by eye | |
| R8 | 120K | 120k | read from the schematic by eye | |
| R9 | 10K | 10k | designator blurred; read from the schematic by eye | |
| R10 | 10K | 10k | read from the schematic by eye | |
| R11 | 120K | 120k | read from the schematic by eye | |
| R12 | 120K | 120k | read from the schematic by eye | |
| R13 | 120K | 120k | designator blurred; read from the schematic by eye | |
| R14 | 10K | 10k | read from the schematic by eye | |
| R15 | 10K | 10k | read from the schematic by eye | |
| R16 | 120K | 120k | read from the schematic by eye | |
| R17 | 10K | 10k | read from the schematic by eye | |
| R18 | 10K | 10k | read from the schematic by eye | |
| R19 | 33K | 33k | read from the schematic by eye | |
| R20 | 33K | 33k | read from the schematic by eye | |
| R21 | 68K | 68k | read from the schematic by eye | |
| R22 | 120K | 120k | read from the schematic by eye | |
| R23 | 120K | 120k | read from the schematic by eye | |
| R24 | 120K | 120k | read from the schematic by eye | |
| R25 | 220 | 220 | read from the schematic by eye | |
| R26 | 82K | 82k | read from the schematic by eye | |
| R27 | 82K | 82k | read from the schematic by eye | |
| R28 | 82K | 82k | read from the schematic by eye | |
| R29 | 82K | 82k | read from the schematic by eye | |
| R30 | 6.8K | 6.8k | read from the schematic by eye | |
| R32 | 3.3K | 3.3k | read from the schematic by eye | |
| R34 | 1M | 1M | read from the schematic by eye | |
| R35 | 1.5M | 1.5M | read from the schematic by eye | |
| R36 | 150K | 150k | read from the schematic by eye | |
| R38 | 470K | 470k | designator drawn like 'R36', which clashes; R38 is the free number; read from the schematic by eye | |
| R39 | 2.2K | 2.2k | LED/zener string; value blurred; read from the schematic by eye | |
| R40 | 10K | 10k | read from the schematic by eye | |
| R41 | 150K | 150k | read from the schematic by eye | |
| R42 | 68K | 68k | read from the schematic by eye | |
| Capacitors 19 | ||||
| C1 | 0.047uF | 47n | drawn '0.047'; read from the schematic by eye | |
| C2 | 0.0047uF | 4.7n | drawn 'K0.0047', K = tolerance; read from the schematic by eye | |
| C3 | 0.01uF | 10n | drawn '0.01'; read from the schematic by eye | |
| C4 | 0.0047uF | 4.7n | drawn 'K0.0047'?; read from the schematic by eye | |
| C5 | 0.01uF | 10n | drawn '0.01'; read from the schematic by eye | |
| C6 | 0.0047uF | 4.7n | drawn 'K0.0047'; read from the schematic by eye | |
| C7 | 0.01uF | 10n | drawn '0.01'; read from the schematic by eye | |
| C8 | 0.0047uF | 4.7n | drawn 'K0.0047'?; read from the schematic by eye | |
| C9 | 0.01uF | 10n | drawn '0.01'; read from the schematic by eye | |
| C10 | 0.056uF | 56n | drawn '0.056'; read from the schematic by eye | |
| C11 | 0.056uF | 56n | drawn '0.056'; read from the schematic by eye | |
| C12 | 0.056uF | 56n | drawn '0.056'; read from the schematic by eye | |
| C13 | 0.047uF | 47n | drawn '0.047'; read from the schematic by eye | |
| C14 | 0.056uF | 56n | drawn '0.056'; read from the schematic by eye | |
| C15 | 10uF | 10u | drawn '16V10', electrolytic 16V; read from the schematic by eye | |
| C16 | 0.01uF | 10n | drawn 'K0.01'; read from the schematic by eye | |
| C17 | 10uF | 10u | drawn '16V K10', electrolytic 16V; read from the schematic by eye | |
| C18 | 22uF | 22u | drawn '25V22', electrolytic 25V; read from the schematic by eye | |
| ×1 | ? | ? | electrolytic at S1-3, no designator or value; read from the schematic by eye | |
| Diodes 3 | ||||
| D1 | RD5A-N | RD5A-N | zener; read from the schematic by eye | |
| D3 | RD6A-L | RD6A-L | zener; read from the schematic by eye | |
| D4 | 1S953 | 1S953 | read from the schematic by eye | |
| Transistors 4 | ||||
| Q1 | 2SK30A(O) | 2SK30A(O) | JFET; read from the schematic by eye | |
| Q2 | 2SK30A(O) | 2SK30A(O) | JFET; read from the schematic by eye | |
| Q3 | 2SK30A(O) | 2SK30A(O) | JFET; read from the schematic by eye | |
| Q4 | 2SK30A(O) | 2SK30A(O) | JFET; read from the schematic by eye | |
| ICs 4 | ||||
| IC1 | LM1458N | LM1458N | read from the schematic by eye | |
| IC2 | LM1458N | LM1458N | read from the schematic by eye | |
| IC3 | LM1458N | LM1458N | read from the schematic by eye | |
| IC4 | LM741CH | LM741CH | LFO; read from the schematic by eye | |
| Potentiometers 1 | ||||
| R37 | 500K | 500k | Potentiometer | LFO speed; read from the schematic by eye |
| Trimmers 2 | ||||
| R33 | B150K | 150k | drawn '150K(B)'; variable resistor in the LFO bias network; read from the schematic by eye | |
| R31 | 100K | 100k | variable resistor in the feedback path switched by S2; read from the schematic by eye | |
| Switches 1 | ||||
| S2 | SPST | SPST | feedback switch; read from the schematic by eye | |
| LEDs 1 | ||||
| D2 | TLR-102 | TLR-102 | LED; read from the schematic by eye | |