Transistor tester fits into your pocket
Transistor tester fits into your pocket
09.16.2021 Circuits

It can be helpful to rapidly and easily determine the polarity (npn or pnp) and function of a transistor. The pocket-transistor tester is ideal for quickly testing without regard to such parameters as gain and frequency response...

Divider generates accurate 455kHz square-wave signal
Divider generates accurate 455kHz square-wave signal
09.16.2021 Circuits

The circuit here is an oscillator with an unusual frequency divider that I designed when I was developing an RF system. I needed a stable and accurate 455 kHz digital signal generator that used as few components as possible...

Electronic battery connection method boosts efficiency
Electronic battery connection method boosts efficiency by up to 30%
09.15.2021 Articles

Switching Battery Inc., has unveiled an innovative electronic method for the connection of batteries called "para-series". The patent-pending para-series method is based on dynamically switching a group of batteries...

Infrared Thermometer Pen
Infrared Thermometer Pen
09.13.2021 Circuits

Also called the ThermoPen, the goal of this project was to create a portable thermometer usable for precise uses case...

Raspberry Pi most popular SBC industrial
Raspberry Pi most popular SBC in industrial and IoT applications
09.09.2021 Articles

A global survey by Farnell shows significant use of low-cost SBCs are being used in all stages of product development and production led by the Raspberry Pi...

discrete auto power-off timer excellent characteristics
A discrete auto power-off timer with excellent characteristics
09.08.2021 Circuits

Over the years, various power-off circuits have been published. However, the circuit proposed here is very simple and has excellent characteristics. It features a fast power-off transition, with only 8 mV voltage drop at power on and sub-µA leakage current...

Processor history road 6502 nostalgia
Processor history: The road to the 6502 nostalgia
09.06.2021 Articles

PragmatIC Semiconductor’s recent announcement about developing a flexible version of the 6502 processor takes tech history buffs on the road to nostalgia...

Build transformerless 12V-to-180V dc dc converter
Build a transformerless 12V-to-180V dc/dc converter
09.02.2021 Circuits

Some transducers for portable or automotive applications need accurately regulated, high-voltage bias and draw little current. To produce such high voltages from a low battery voltage, designers typically use switch-mode dc/dc converters...

Practical Guide High-Speed Printed-Circuit-Board Layout. Part
A Practical Guide to High-Speed Printed-Circuit-Board Layout. Part 2
09.01.2021 Articles

A ground plane acts as a common reference voltage, provides shielding, enables heat dissipation, and reduces stray inductance (but it also increases parasitic capacitance). While there are many advantages to using a ground plane, care must be taken when implementing it...

Practical Guide High-Speed Printed-Circuit-Board Layout. Part
A Practical Guide to High-Speed Printed-Circuit-Board Layout. Part 1
08.30.2021 Articles

Despite its critical nature in high-speed circuitry, printed-circuit-board layout is often one of the last steps in the design process. There are many aspects to high-speed PCB layout; volumes have been written on the subject. This article addresses high-speed layout from a practical perspective...