Enclosure not stated · 2 knobs
Electro Harmonix PulsarVerified
Based on the Electro-Harmonix Pulsar· 4 other boards clone it
- Category
- Vibrato / Chorus
- Build
- Vero· 18×19· 15 cuts, 8 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Electro Harmonix, Modulation, Tremolo
From the post
A modified layout for the old EHX Pulsar which is infamous for its LFO ticking bleedtrough. There is two mods that hopefully can solve it. First, an op amp input buffer and second the more common mod; separating the power with a small value resistor between the amplifier and the LFO section. LFO section also have its own power filter cap.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 30 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 1.1K at column 3, rows P-S (bottom left): printed clearly as 1,1K, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×4 | 47K | 47k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×2 | 30K | 30k | read from the layout by eye | |
| ×2 | 200K | 200k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 27K | 27k | read from the layout by eye | |
| ×1 | 1.1K | 1.1k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| Capacitors 9 | ||||
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×2 | 470nF | 470n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×2 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N5088 | 2N5088 | read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | read from the layout by eye | |
| Q3 | 2N5088 | 2N5088 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Speed | A100K | A100k | Potentiometer | read from the layout by eye |
| Intensity | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the Electro-Harmonix Pulsar
- Electro Harmonix Pulsar - Big box version Dirtbox Layouts
- Jocelyn Bell Effects Layouts · 125B · $10.00
- Electro Harmonics Pulsar Tremolo Effects Layouts (blog)
- EHX Pulsar Tagboard Effects