2 layers226.4 × 128.4 mm
Bab top
trublion/turtable_control_board_hbridge
HW control board for turntable. Controls a DC motor with a H-bridge, reads an analog audio signal envelope, dual-PCB design.
109 partsMIT
2 layers91 × 87 mm
Harmonic jerkulator
Randagodron/harmonic-jerkulator1Fuzz stompbox for electric guitar
- Size
- 91 × 87 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 33
- Pads
- 150
- Tracks, vias
- 573, 37
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 1 Jan 2021
- Updated
- 1 Jan 2021
Overview
Harmonic jerkulator is an open-source printed circuit board by Randagodron, from the Randagodron/harmonic-jerkulator repository on GitHub. It is a 2-layer board of 91 × 87 mm with 45 parts on 33 nets, routed with 573 tracks and 37 vias.
It is built around the DTC123YE, BAS21 and BC856, with the DTA114E and TQ2SA-5V among its other parts. Its parts include 13 resistors, 11 connectors, 8 capacitors, 5 transistors and 4 diodes.
Main components
5
DTC123YE
SOT-523-55℃~+150℃ 1 NPN (Pre-Biased) 100mA 150mW 2.86kΩ 250MHz 300mV 300mV 33 3V 5.5 50V NPN SOT-523 Digital Transistors ROHSCBIDigital Transistors
BAS21
SOT-231.25V@200mA 100nA@100V 200mA 250V 9A Independent SOT-23 Diodes - General Purpose ROHSNexperiaSwitching DiodesBC856
SOT-23-65℃~+150℃ 1 PNP 100MHz 100mA 125 15nA 250mW 300mV 5V 65V PNP SOT-23 Bipolar (BJT) ROHSNexperiaBipolar (BJT)DTA114E
--55℃~+150℃ 1 PNP 100mA 100nA 350mW 50V PNP - Bipolar (BJT)onsemiBipolar (BJT)
TQ2SA-5V
SMD,14x9mm-40℃~+85℃ 125V@AC、220V@DC 140mW 178Ω 2A 4ms 4ms 500mA@125VAC、1A@30VDC 50mΩ 5V AgNi + Gold plated Two groups of conversions: 2C(Double-pole double-throw conversion) SMD,14x9mm Signal Relays ROHSPanasonicSignal Relays
README
README.mdharmonic-jerkulator
Fuzz stompbox for electric guitar
This circuit is based on the Harmonic Jerkulator from Tim Escobedo, itself based on the Interfax Harmonic Percolator.
CAD done with KiCAD, simulation done with LTSpice.
Companion article (in french) : http://blog.randagodron.eu/index.php?post/2017/12/23/DIY-audio-Harmonic-Jerkulator
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100n | Capacitors_SMD:C_0603 | C103, C106, C107 |
| 2 | 100k | Resistors_SMD:R_0603 | R103, R109 |
| 2 | 150 | Resistors_SMD:R_0805 | R112, R113 |
| 2 | 1k | Resistors_SMD:R_0603 | R101, R108 |
| 2 | 22k | Resistors_SMD:R_0603 | R104, R105 |
| 2 | 22u | Capacitors_SMD:CP_Elec_5x5.3 | C104, C108 |
| 2 | Conn_01x06 | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | J111, J113 |
| 2 | D | TO_SOT_Packages_SMD:SOT-23 | D101, D102 |
| 2 | DTC123Y | TO_SOT_Packages_SMD:SOT-23 | Q103, Q104 |
| 1 | 100 | Resistors_SMD:R_0603 | R106 |
| 1 | 10k | Resistors_SMD:R_0603 | R107 |
| 1 | 1M | Resistors_SMD:R_0603 | R102 |
| 1 | 1n | Capacitors_SMD:C_0603 | C105 |
| 1 | 22n | Capacitors_SMD:C_0603 | C101 |
| 1 | 2M2 | Resistors_SMD:R_0603 | R111 |
| 1 | 330 | Resistors_SMD:R_0805 | R110 |
| 1 | 4013 | SMD_Packages:SOIC-14_N | U101 |
| 1 | 47n | Capacitors_SMD:C_0603 | C102 |
| 1 | BAS21 | TO_SOT_Packages_SMD:SOT-23 | D103 |
| 1 | BC850 | TO_SOT_Packages_SMD:SOT-23 | Q101 |
| 1 | BC856 | TO_SOT_Packages_SMD:SOT-23 | Q102 |
| 1 | CONN_PSU | Connect:JACK_ALIM | J103 |
| 1 | DIODE1 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J108 |
| 1 | DIODE2 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J110 |
| 1 | DIODE_SW | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J109 |
| 1 | DTA114E | TO_SOT_Packages_SMD:SOT-23 | Q105 |
| 1 | GAIN | flax_lib:ALPS_RK09L | RV101 |
| 1 | JACK_IN | flax_lib:CLIFF_FCR5005x | J101 |
| 1 | JACK_OUT | flax_lib:CLIFF_FCR5005x | J102 |
| 1 | LED | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | D104 |
| 1 | NPN | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J106 |
| 1 | PNP | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J105 |
| 1 | SW_BYPASS | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J107 |
| 1 | TQ2SA-5V | flax_lib:TQ2SA | K101 |
| 1 | VOLUME | flax_lib:ALPS_RK09L | RV102 |
Questions
How big is the Harmonic jerkulator PCB?
It measures 91 × 87 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Harmonic jerkulator use?
45 parts, built around the DTC123YE, BAS21, BC856 and DTA114E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Harmonic jerkulator KiCad files?
From the Randagodron/harmonic-jerkulator repository on GitHub, at the commit this page was made from: the board is cad/harmonic_jerkulator.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Harmonic jerkulator design in my own project?
Its repository states no licence, so its author keeps all rights: ask Randagodron before reusing the design.
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