125B · 3 knobs
Effects Layouts· JBT031422
Jocelyn Bell
Based on the EHX Pulsar tremolo
- Category
- Tremolo
- Controls
- Depth · Rate · Slope
- Price
- $10.00in stock
From the vendor
The JOCELYN BELL is a very cool tremolo circuit, inspired by the big box EHX Pulsar tremolo. It’s OTA based and features not only a spot for the through-hole CA3080 chip used in the original, but SMD pads on the back side for an LM13700 if you can’t get a hold of the 3080.
Build doc
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Based on the EHX Pulsar
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 61 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 34 | ||||
| R1 | 1M | 1M | ||
| R2 | 100k | 100k | ||
| R3 | 100k | 100k | ||
| R4 | 27k | 27k | ||
| R5 | 1.5k | 1.5k | ||
| R6 | 1.8k | 1.8k | ||
| R7 | 5.6k | 5.6k | ||
| R8 | 27k | 27k | ||
| R9 | 27k | 27k | ||
| R10 | 100k | 100k | ||
| R11 | 27k | 27k | ||
| R12 | 27k | 27k | ||
| R13 | 33k | 33k | ||
| R14 | 1k | 1k | ||
| R15 | 100k | 100k | ||
| R16 | 18k | 18k | ||
| R17 | 330k | 330k | ||
| R18 | 47k | 47k | ||
| R19 | 1k | 1k | ||
| R20 | 4.7k | 4.7k | ||
| R21 | 1k | 1k | ||
| R22 | 1k | 1k | ||
| R23 | 47k | 47k | ||
| R24 | 56Ω | 56 | ||
| R25 | 330k | 330k | ||
| R26 | 27k | 27k | ||
| R27 | 82k | 82k | ||
| R28 | 18k | 18k | ||
| R29 | 47Ω | 47 | ||
| R30 | 100k | 100k | ||
| R31 | 100k | 100k | ||
| R32 | 47Ω | 47 | ||
| R33 | 100k | 100k | ||
| R34 | 100k | 100k | ||
| Capacitors 16 | ||||
| C2 | 470n | 470n | ||
| C3 | 2.2µ | 2.2u | ||
| C4 | 220n | 220n | ||
| C5 | 330n | 330n | ||
| C6 | 1µ | 1u | ||
| C7 | 4.7µ | 4.7u | ||
| C8 | 10µ | 10u | ||
| C9 | 100µ | 100u | ||
| C10 | 100n | 100n | ||
| C11 | 10µ | 10u | ||
| C12 | 22µ | 22u | ||
| C13 | 22µ | 22u | ||
| C14 | 100n | 100n | ||
| C15 | 47µ | 47u | ||
| C16 | 47µ | 47u | ||
| C1 | 22n | 22n | ||
| Diodes 3 | ||||
| D1 | 1N4148 | 1N4148 | ||
| D2 | 1N4148 | 1N4148 | ||
| D3 | 1N5817 | 1N5817 | ||
| ICs 3 | ||||
| IC1 | TL074 | TL074 | ||
| IC2 | CA3080* | CA3080 | ||
| IC3 | LM324 | LM324 | ||
| Potentiometers 3 | ||||
| DEPTH | B100K | B100k | Potentiometer | |
| RATE | B1K | B1k | Potentiometer | |
| SLOPE | B100K | B100k | Potentiometer | |
| LEDs 2 | ||||
| LED1 | 3 or 5mm | 3 OR 5MM | ||
| LED2 | 3 or 5mm | 3 OR 5MM | ||