Current dr psu
About the Current dr psu PCB
Current dr psu is an open source PCB design by werediver, published on GitHub. It is a 2-layer board measuring 100 × 155 mm, with 79 components from 23 distinct parts.
Other key parts include the AP-01, Ohmite, LM334M, TL072 and TS432. By type, the board carries 29 resistors, 18 capacitors, 10 ICs, 8 transistors, 4 diodes and 3 connectors.
It belongs with the audio designs in this gallery.
From the project
A current drive headphone amplifier
This is a "current drive" or VCCS class A headphone amplifier. Some advocacy of current drive (as well as a whole book on the topic) can be found at current-drive.info.
The first prototype is briefly described on Prototype page.
The current version of the schematic is showed below.
Two such channels with a dedicated linear PSU are going to be fit into an extruded aluminum enclosure with internal dimensions of 96x155x50 mm.
Main components on the Current dr psu
Current dr psu bill of materials (BOM)
79 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP-01, Ohmite | EMI_FILTER_25x25 | U1 |
| 1 | LM334M | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 4 | TL072 | SO-8_3.9x4.9mm_P1.27mm | U3, U5, U7, U9 |
| 4 | TS432 | SOT-23_Handsoldering | U4, U6, U8, U10 |
| 2 | BC857A | SOT-23_Handsoldering | Q1, Q3 |
| 2 | BC817-40 | SOT-23_Handsoldering | Q2, Q4 |
| 2 | BC847A | SOT-23_Handsoldering | Q5, Q7 |
| 2 | BC807-40 | SOT-23_Handsoldering | Q6, Q8 |
| 1 | AC IN | Molex_Mini-Fit_Jr_5566-04A_2x02_P4.20mm_Vertical | J1 |
| 1 | DC OUT | Molex_KK-254_AE-6410-05A_1x05_P2.54mm_Vertical | J2 |
| 1 | POWER ON LED | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J3 |
| 1 | 0.25A 250V | FUSE_5x20_Stelvio-Kontek_PTF75 | F1 |
| 1 | 1k | Potentiometer_Bourns_3214G_Horizontal | RV1 |
| 4 | 20k | Potentiometer_Bourns_3224W_Vertical | RV2, RV3, RV4, RV5 |
| 1 | TALEMA 70063K | TF_60x60 | TR1 |
| 4 | STPS2L40U | D_SMB_Handsoldering | D1, D2, D3, D4 |
| 2 | 10000u | C_Radial_D18.0mm_H35.5mm_P7.50mm | C1, C2 |
| 4 | 0.1u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C7, C11, C15 |
| 4 | 1n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4, C8, C12, C16 |
| 4 | 47n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C5, C9, C13, C17 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 10u | CP_EIA-3216-10_Kemet-I_Pad1.58x1.35mm_HandSolder | C6, C10, C14, C18 |
| 9 | 1k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R5, R6, R12, R13, R18, R20, R25 +1 |
| 20 | 10k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3, R4, R7, R8, R9, R10, R11 +12 |
Current dr psu design files
The KiCad project lives in the werediver/current-dr-amp repository on GitHub; these links point at the commit this page was built from.
Current dr psu: common questions
How big is the Current dr psu PCB?
The Current dr psu measures 100 × 155 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Current dr psu?
79 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the Current dr psu design files?
From the werediver/current-dr-amp repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Current dr psu design in my own project?
The repository has no license, so all rights stay with werediver. Use it as a reference, and ask the author before reusing the design.
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