2 layers81.3 × 99.1 mm
2 layers29.2 × 86.4 mm
Envelope
blthree/synth_schematics- Size
- 29.2 × 86.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 24
- Pads
- 101
- Tracks, vias
- 174, 5
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 13 Jun 2019
- Updated
- 27 Jun 2019
Overview
Envelope is an open-source printed circuit board by blthree, from the blthree/synth_schematics repository on GitHub. It is a 2-layer board of 29.2 × 86.4 mm with 28 parts on 24 nets, routed with 174 tracks and 5 vias.
It is built around the BC548. Its parts include 6 capacitors, 6 resistors, 5 connectors, 4 diodes and 3 transistors.
Main components
1README
README.mdView this project on CADLAB.io.
synth_schematics
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 0.1uF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C6 |
| 3 | 1uF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C3, C4, C5 |
| 2 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R3, R4 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R5, R6 |
| 2 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2 |
| 2 | BC548 | Package_TO_SOT_THT:TO-92_Inline | Q2, Q3 |
| 2 | D_ALT | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 1 | 1M Attack | Potentiometer_THT:Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV1 |
| 1 | 1M Decay | Potentiometer_THT:Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV2 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D3 |
| 1 | 2N3906 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | 40106 | Package_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | Env Out 1 | Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J3 |
| 1 | Env Out 2 | Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J5 |
| 1 | Gate In | Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J2 |
| 1 | LED | LED_THT:LED_D5.0mm | D4 |
| 1 | Power | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J4 |
| 1 | Sustain | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J1 |
| 1 | TL074 | Package_DIP:DIP-14_W7.62mm_Socket | U1 |
Questions
How big is the Envelope PCB?
It measures 29.2 × 86.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Envelope use?
28 parts, built around the BC548. 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 Envelope KiCad files?
From the blthree/synth_schematics repository on GitHub, at the commit this page was made from: the board is envelope/envelope.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Envelope design in my own project?
Its repository states no licence, so its author keeps all rights: ask blthree before reusing the design.
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