Elk pwm amp
About the Elk pwm amp PCB
Elk pwm amp is an open source PCB design by eyalo-dev, published on GitHub. It is a 2-layer board measuring 45.1 × 95.3 mm, with 28 components from 20 distinct parts.
Other key parts include the CA3130 and 40106. By type, the board carries 9 capacitors, 7 resistors, 2 ICs, 2 transistors, 2 speakers and 1 connector.
It belongs with the audio designs in this gallery.
From the project
my public CAD/PCB files
Description: - Very simple PWM (class D) audio amplifier
Source reference: - Elektor may 1980, p. 25 (23) - No PCB number
This is functional similar but not exact copy. All dimension were estimated by eye. Tried to use similar component placment as much as posible, but using only Kicad standard PCB component footprint library, so dimentions may very.
Main components on the Elk pwm amp
Elk pwm amp bill of materials (BOM)
28 components, 20 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CA3130 | DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | 40106 | DIP-14_W7.62mm_Socket_LongPads | U2 |
| 1 | BD137 | TO-126-3_Vertical | Q1 |
| 1 | BD138 | TO-126-3_Vertical | Q2 |
| 1 | 100K/log | Potentiometer_Alps_RK163_Single_Horizontal | P1 |
| 4 | ~ | PinHeader_1x01_P2.54mm_Vertical | +1, GND1, IN1, IN2 |
| 2 | ~ | PinHeader_1x01_P2.54mm_Vertical | LS1, LS2 |
| 1 | 39uH | C_Disc_D5.0mm_W2.5mm_P5.00mm | L1 |
| 2 | 100nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2 |
| 1 | 100pF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C3 |
| 2 | 100uF/16V | CP_Axial_L11.0mm_D6.0mm_P18.00mm_Horizontal | C4, C5 |
| 1 | 68nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C6 |
| 1 | 470nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C7 |
| 1 | 100uF/16V | CP_Axial_L21.0mm_D8.0mm_P28.00mm_Horizontal | C8 |
| 1 | 2n2 | C_Disc_D5.0mm_W2.5mm_P5.00mm | C9 |
| 1 | 22K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 2 | 1M | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2, R7 |
| 2 | 2K2 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R4 |
| 1 | 470K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R5 |
| 1 | 8R2 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R6 |
Elk pwm amp design files
The KiCad project lives in the eyalo-dev/cad-public repository on GitHub; these links point at the commit this page was built from.
Elk pwm amp: common questions
How big is the Elk pwm amp PCB?
The Elk pwm amp measures 45.1 × 95.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Elk pwm amp?
28 components, from 20 distinct parts. The full bill of materials is listed on this page.
Where can I download the Elk pwm amp design files?
From the eyalo-dev/cad-public repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Elk pwm amp design in my own project?
The repository has no license, so all rights stay with eyalo-dev. Use it as a reference, and ask the author before reusing the design.
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