Enclosure not stated · 1 knob
Sine Wave Quadrature Oscillator
- Category
- Ring Mod / Synth· Oscillators LFOs and Signal Generators
- Controls
- Frequency
- Price
- see vendor
- Tags
- Oscillators LFOs and Signal Generators
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 11 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| ×4 | 15k | 15k | frequency CV, two LM13700 bias resistors, oscillation trim; read from the schematic by eye | |
| ×6 | 1k | 1k | four LM13700 input dividers, sine and cosine outputs; read from the schematic by eye | |
| ×3 | 22k | 22k | read from the schematic by eye | |
| ×2 | 100k | 100k | amplitude limiter stage; read from the schematic by eye | |
| Capacitors 1 | ||||
| ×2 | 330pF | 330p | integrator capacitors; read from the schematic by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | limiter bridge; read from the schematic by eye | |
| ×1 | 1N4735A | 1N4735A / 6V2 | zener in the limiter bridge; read from the schematic by eye | |
| ICs 2 | ||||
| ×1 | LM13700 | LM13700 | both OTA halves used as integrators; read from the schematic by eye | |
| ×2 | TL072 | TL072 | three op amp sections drawn (pins 1-3 used twice), so two chips; read from the schematic by eye | |
| Potentiometers 1 | ||||
| Frequency | 100k | 100k | Potentiometer | frequency control (or use an expo converter); read from the schematic by eye |
| Trimmers 1 | ||||
| Oscillation Trim | 10k | 10k | read from the schematic by eye | |