EDN

One Second Audible Clock Circuit Schematic

This accurate one-pulse-per-second clock is made with a few common parts and driven from a 50 or 60 Hertz mains supply but with no direct connection to it. A beep or metronome-like click and/or a ...
EDN

Mixed-Signal PCB Design: Schematic-Level Design Considerations

If you can't pick up the schematic and know (at a moderately high level) what the design is supposed to do and how it is supposed to do it, then you have not really done your job as the designer. The ...
Design-Reuse

Analysis and Summary on Clock Generator Circuits and PLL Design

The demand for analog and mixed-signal-based integrated circuits (ICs) has surged due to the increasing reliance on electronic-based applications across industries. As the world transitions to more ...
Electronic Design

Measuring digital clock stability and jitter with an oscilloscope

Clocks are the heartbeats of embedded systems, providing timing references and synchronization between components, subsystems, and entire systems. Incorrect clock signal amplitudes and timing can ...
Design-Reuse

System Verilog Assertions Simplified

Assertion is a very powerful feature of System Verilog HVL (Hardware Verification Language). Nowadays it is widely adopted and used in most of the design verification projects. This article explains ...
Hackaday

DIY Active Sub-GHz Differential Scope Probe

Fancy measurement gear is often expensive to buy, but some bits of kit are entirely DIY’able if you’re willing to put a little work into the project. [Christer Weinigel] needed to get some ...
Hackaday

Nixie Clock Claims To Be Simplest Design

[Engineer2you] built a nixie tube clock and claims it is the simplest design. We felt like that was a challenge. In this design, the tubes are set up as a matrix with optoisolators on each row and ...
Electronic Design

PCI Express Clock Generators, Buffers Prepare for Next Generation

PCIe has been around since 2004. It’s a high-speed serial computer expansion bus specification that replaces older PCI and PCI-X standards. PCIe currently supports the Generation 4 specification. In ...