Enclosure not stated · 3 knobs
Triangle Square and Sine Test Oscillator
- Category
- Ring Mod / Synth· Oscillators LFOs and Signal Generators
- Controls
- Low Output Level · High Output Level · Invert Level
- 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 25 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×1 | 1K | 1k | LED resistor; read from the schematic by eye | |
| ×2 | 1K | 1k | from each output-level control to the amp input; read from the schematic by eye | |
| ×1 | 9.1K | 9.1k | inverter input/feedback; read from the schematic by eye | |
| ×1 | 10K | 10k | feed to inverter; read from the schematic by eye | |
| ×2 | 20K | 20k | virtual ground divider; read from the schematic by eye | |
| ×2 | 22K | 22k | amp feedback; read from the schematic by eye | |
| ×2 | 27K | 27k | low-tone filter; read from the schematic by eye | |
| ×2 | 33K | 33k | high-tone filter; read from the schematic by eye | |
| ×2 | 47K | 47k | oscillator feedback; read from the schematic by eye | |
| ×4 | 100K | 100k | oscillator, two per channel; read from the schematic by eye | |
| Capacitors 7 | ||||
| ×2 | 2n2 | 2.2n | amp feedback; read from the schematic by eye | |
| ×1 | 6n8 | 6.8n | high-tone integrator; read from the schematic by eye | |
| ×3 | 10n | 10n | low-tone integrator and both filter caps to ground; read from the schematic by eye | |
| ×2 | 20n | 20n | filter; read from the schematic by eye | |
| ×5 | 100n | 100n | coupling and output caps; read from the schematic by eye | |
| ×1 | 10uF | 10u | electrolytic, 16V, virtual ground; read from the schematic by eye | |
| ×1 | 220uF | 220u | electrolytic, 25V, supply; read from the schematic by eye | |
| Diodes 1 | ||||
| ×1 | Diode | DIODE | crowbar diode across the 12V input, marked 3A; no part number given; read from the schematic by eye | |
| ICs 3 | ||||
| U1 | 324 | 324 | quad op amp, low-tone channel; read from the schematic by eye | |
| U2 | 324 | 324 | quad op amp, high-tone channel; read from the schematic by eye | |
| U3 | 1458 | 1458 | dual op amp: inverter and virtual ground buffer; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Low Output Level | 20K | 20k | Potentiometer | drawn as variable resistor; read from the schematic by eye |
| High Output Level | 20K | 20k | Potentiometer | drawn as variable resistor; read from the schematic by eye |
| Invert Level | 2K | 2k | Potentiometer | drawn as variable resistor; read from the schematic by eye |
| LEDs 1 | ||||
| ×1 | red | RED | power LED; read from the schematic by eye | |