PAM-Using-555-Timer
About the PAM-Using-555-Timer PCB
PAM-Using-555-Timer is an open source PCB design by ExTc-aShiSh, published on GitHub under the MIT license. It is a 2-layer board measuring 37 × 22.5 mm, with 21 components from 15 distinct parts.
Other key parts include the NE555D and LDO. By type, the board carries 7 capacitors, 5 resistors, 3 connectors, 3 diodes, 2 ICs and 1 transistor.
From the project
Designed and simulated a Pulse Amplitude Modulation (PAM) system using a 555 timer as the sampling pulse generator and an analog message signal in Proteus/LTspice and KiCAD
A Pulse Amplitude Modulation (PAM) circuit implementation using the versatile 555 timer IC and a transistor switch.
This project demonstrates a simple yet effective PAM circuit that modulates the amplitude of a carrier signal based on an input message signal. The 555 timer generates the carrier pulse train, while a transistor acts as an electronic switch to control the amplitude modulation.
Main components on the PAM-Using-555-Timer
PAM-Using-555-Timer bill of materials (BOM)
21 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NE555D | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | LDO | SOT-223-3_TabPin2 | U2 |
| 1 | Q_NPN_BCE | TO-92_HandSolder | Q1 |
| 1 | Vin | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | i/p signal | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | o/p signal | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | D | D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | D_Small | D_DO-41_SOD81_P7.62mm_Horizontal | D2 |
| 1 | Power LED | LED_D3.0mm | D3 |
| 2 | 0.1uF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C3 |
| 3 | 10uF | C_Radial_D5.0mm_H7.0mm_P2.00mm | C2, C4, C7 |
| 2 | 10nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C5, C6 |
| 2 | 4.7k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 1 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R3 |
| 2 | 330 | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4, R5 |
PAM-Using-555-Timer design files
The KiCad project lives in the ExTc-aShiSh/PAM-Using-555-Timer repository on GitHub; these links point at the commit this page was built from.
PAM-Using-555-Timer: common questions
How big is the PAM-Using-555-Timer PCB?
The PAM-Using-555-Timer measures 37 × 22.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PAM-Using-555-Timer?
21 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the PAM-Using-555-Timer design files?
From the ExTc-aShiSh/PAM-Using-555-Timer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PAM-Using-555-Timer design in my own project?
Yes, under the terms of its MIT license, which ExTc-aShiSh chose for the repository.