Enclosure not stated · 3 knobs
Electro Harmonix Frequency Analyzer 1
Based on the Electro-Harmonix Frequency Analyzer 1
- Category
- Ring Mod / Synth· Ring Modulators and Frequency Shifters
- Controls
- Shift · Fine · Blend
- Price
- see vendor
- Tags
- Ring Modulators and Frequency Shifters
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 33 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×10 | 1k | 1k | IC2 input/bias, carrier and output loads, filter-off path, IC4 pins 4/5; read from the schematic by eye | |
| ×3 | 10k | 10k | input to ground; two IC2 output pull-ups; read from the schematic by eye | |
| ×1 | 220k | 220k | IC1 input stage feedback; read from the schematic by eye | |
| ×1 | 5.1k | 5.1k | IC1 input stage gain; read from the schematic by eye | |
| ×3 | 3.3k | 3.3k | IC1 to IC2; dry blend divider pair; read from the schematic by eye | |
| ×4 | 47k | 47k | IC2 pin 5; IC3 gain; IC4 output divider pair; read from the schematic by eye | |
| ×2 | 100k | 100k | IC1 difference amp feedback and to ground; read from the schematic by eye | |
| ×1 | 20k | 20k | carrier into IC2; read from the schematic by eye | |
| ×2 | 33k | 33k | filter (IC3); read from the schematic by eye | |
| ×1 | 5.6k | 5.6k | filter (IC3); read from the schematic by eye | |
| ×1 | 56k | 56k | IC3 output stage feedback; read from the schematic by eye | |
| ×1 | 82k | 82k | IC4 pin 12; read from the schematic by eye | |
| Capacitors 9 | ||||
| ×3 | 10uF | 10u | electrolytic; read from the schematic by eye | |
| ×1 | 0.1uF | 100n | filter-off path; read from the schematic by eye | |
| ×3 | 0.1uF | 100n | marked with a star: multilayer ceramic or similar small capacitor; read from the schematic by eye | |
| ×1 | 1uF | 1u | electrolytic, to foot switch; read from the schematic by eye | |
| ×1 | 1uF | 1u | electrolytic, IC4 output; read from the schematic by eye | |
| ×1 | 0.022uF | 22n | IC4 timing; read from the schematic by eye | |
| ×2 | 1000uF | 1m | supply, 25V; read from the schematic by eye | |
| ×2 | 1uF | 1u | supply, electrolytic; read from the schematic by eye | |
| ×2 | 0.01uF | 10n | supply; read from the schematic by eye | |
| Diodes 1 | ||||
| ×1 | W02 | W02 | bridge rectifier; read from the schematic by eye | |
| ICs 6 | ||||
| IC1 | 4558 | 4558 | dual op amp; read from the schematic by eye | |
| IC2 | 1496H | 1496H | balanced modulator; read from the schematic by eye | |
| IC3 | 4558 | 4558 | dual op amp; read from the schematic by eye | |
| IC4 | 8038CC | 8038CC | function generator; read from the schematic by eye | |
| ×1 | 78L15 | 78L15 | +15V regulator; read from the schematic by eye | |
| ×1 | 79L15 | 79L15 | -15V regulator; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Shift | B100K | B100k | Potentiometer | Japanese B = linear; read from the schematic by eye |
| Fine | B2.5K | B2.5k | Potentiometer | Japanese B = linear; note says see the article text for the 2.5k pot; read from the schematic by eye |
| Blend | B100K | B100k | Potentiometer | Japanese B = linear; read from the schematic by eye |
| Trimmers 1 | ||||
| ×2 | 100k | 100k | drawn 100k SF (semi-fixed), IC2 balance; read from the schematic by eye | |
| Switches 1 | ||||
| Filter | SPDT | SPDT | filter in/out; read from the schematic by eye | |