Articles and news - 3

Relay hysteresis provides toggle function
Relay hysteresis provides toggle function
08.23.2021 Circuits

In this Design Idea, we look at how electromechanical relays display hysteresis behavior that is surprisingly similar to the solid-state Schmitt trigger circuits, and how they can be used for many similar applications...

TinyCharger Single Cell Li-Ion Battery Charger
TinyCharger - Single Cell Li-Ion Battery Charger with Monitoring
08.19.2021 Circuits

TinyCharger is an ATtiny25/45/85-based, single-cell Li-ion battery charger with selectable charging current limit (100 mA - 1000 mA) and an OLED display for monitoring...

Ex-OR versus Ex-NOR lucky logic equivalence
Ex-OR versus Ex-NOR: A lucky logic equivalence
08.19.2021 Articles

Some years ago, back in 2005 to be specific, the project was a power supply for a low Earth orbiting satellite. Part of our digital circuitry involved some logic gating using Exclusive-OR...

Field coil speakers obsolete or future
Field coil speakers: obsolete or the future?
08.18.2021 Articles

As a youngster, I saw some really old radios; the kind that occupied highly-polished wooden cabinets the size of a refrigerator. When those old radios were made, permanent magnets were not all that powerful, and they were quite costly...

Selectable Output Piezo Sounder Driver Diodes
Selectable Output Piezo Sounder Driver from Diodes Incorporated Drives Higher SPL and Longer Runtimes
08.17.2021 News

Diodes Incorporated introduces the PAM8907 piezoelectric sounder driver, for maximizing sound pressure level delivery from a ceramic/piezo sounder...

Circuit provides reverse-battery protection
Circuit provides reverse-battery protection
08.16.2021 Circuits

A universal problem in battery-operated devices is the threat of damage when an end user (never an engineer) inserts the battery backward. You can avoid damage by inserting a single diode or by using a diode-bridge configuration, but those fixes waste power and reduce the supply voltage...

completely new way generate electricity
A completely new way to generate electricity
08.12.2021 Articles

It is not often you get to write a title like the one above. The main methods of generating electricity have been know for years, decades or even centuries...

Air Pollution Monitoring Alert System Using
Air Pollution Monitoring and Alert System Using Arduino
08.12.2021 Articles

Air pollution is the presence of excessive amount of unwanted & harmful solid and gases substances in the air. Cause and Effect of Air Pollution Recently, many cities in the world have encountered rapid urbanization...

Calibrated Noise Test Setup Increases Measurement
Calibrated Noise Test Setup Increases Measurement Repeatability
08.11.2021 Circuits

This circuit increases the repeatability of noise test setups by providing reference points in the noise-vs.-frequency output generated by the network analyzer...

Dual-timer-based system provides contactless water-dispensing solution
Dual-timer-based system provides contactless water-dispensing solution
08.10.2021 Circuits

Contactless washbasin taps that can dispense water without the risk of communicating diseases can play an important role in the battle against the COVID-19 virus...