Enclosure not stated · 2 knobs
From the vendor
The EA Tremolo is the most popular tremolo effect in the DIY community. This pedal automatically varies the volume over time, giving a pulsating effect. It includes Volume, Speed and Intensity controls, and a dedicated LED visually indicates the tremolo rate.
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 32 rows
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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| R1 | 1M | 1M | 1M Ohm 1/4W 1% Metal Film Resistor | |
| R2 | 1M | 1M | 1M Ohm 1/4W 1% Metal Film Resistor | |
| R3 | 1M | 1M | 1M Ohm 1/4W 1% Metal Film Resistor | |
| R4 | 10k | 10k | 10K Ohm 1/4W 1% Metal Film Resistor | |
| R5 | 150k | 150k | 150K Ohm 1/4W 1% Metal Film Resistor | |
| R6 | 560k | 560k | 560K Ohm 1/4W 1% Metal Film Resistor | |
| R7 | 1.2k | 1.2k | 1.2K Ohm 1/4W 1% Metal Film Resistor | |
| R8 | 180 | 180 | 180 Ohm 1/4W 1% Metal Film Resistor | |
| R9 | 4.7k | 4.7k | 4.7K Ohm 1/4W 1% Metal Film Resistor | |
| R10 | 120k | 120k | 120K Ohm 1/4W 1% Metal Film Resistor | |
| R11 | 10k | 10k | 10K Ohm 1/4W 1% Metal Film Resistor | |
| R12 | 2.2M | 2.2M | 2.2M Ohm 1/4W 1% Metal Film Resistor | |
| R13 | 15k | 15k | 15K Ohm 1/4W 1% Metal Film Resistor | |
| R14 | 1k | 1k | 1K Ohm 1/4W 1% Metal Film Resistor | |
| R15 | 68k | 68k | 68K Ohm 1/4W 1% Metal Film Resistor | |
| Capacitors 9 | ||||
| C1 | 47n | 47n | 47Nf 100V 5% Polyester Film Box Type Capacitor | |
| C2 | 10u | 10u | 10Uf 50V Electrolytic Capacitor 5X11Mm | |
| C3 | 220n | 220n | 220Nf 100V 5% Polyester Film Box Type Capacitor | |
| C5 | 22u | 22u | 22Uf 50V Electrolytic Capacitor 5X11Mm | |
| C6 | 470n | 470n | 470Nf 100V 5% Polyester Film Box Type Capacitor | |
| C7 | 470n | 470n | 470Nf 100V 5% Polyester Film Box Type Capacitor | |
| C8 | 1u | 1u | 1Uf 100V 5% Polyester Film Box Type Capacitor | |
| C9 | 1u | 1u | 1Uf 100V 5% Polyester Film Box Type Capacitor | |
| C10 | 1u | 1u | 1Uf 100V 5% Polyester Film Box Type Capacitor | |
| Transistors 4 | ||||
| Q1 | 2N5457 | 2N5457 | 2N5457 Jfet N-Channel Transistor Smd | |
| Q2 | 2N3904 | 2N3904 | 2N3904 Npn General Purpose Transistor | |
| Q3 | 2N5457fixed | 2N5457 | 2N5457 Jfet N-Channel Transistor Smd | |
| Q4 | 2N5088 | 2N5088 | 2N5088 Gerenal Purpose Transistor | |
| Potentiometers 3 | ||||
| Depth | 250k-B | B250k | 250K Ohm Linear Taper Potentiometer | |
| Speed | 100k-B | B100k | 100K Ohm Linear Taper Potentiometer | |
| Vol | 50k-A | A50k | 50K Ohm Log Taper Potentiometer | Use potentiometer or trimmer; 50k to trimmer; Use potentiometer or trimmer |
| LEDs 1 | ||||
| D1 | LED | LED | Led 3Mm Green | |
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