The pages of Design Ideas have recently been awash in a veritable cascade of designs for variable frequency oscillators with frequency ranges tunable over multiple decades...
5 decade antilogarithmic PWM current source
DC to DC buck converter [Adjustable, 97% efficient, 3 A]
A tiny DC to DC buck converter board is useful for many applications, especially if it could deliver currents up to 3 A...
Vishay Intertechnology 40 LHE linear position sensor delivers high accuracy displacement measurement to 40 mm in harsh environments
Vishay Intertechnology introduced a new compact, ready-to-use linear position sensor designed for high accuracy performance in demanding environments...
Regenerating alkaline batteries
The schematic is rather trivial. A voltage regulator brings down a supply voltage (which might be from a car battery) to 5 V. An additional built-up voltage regulator generates an adjustable voltage of 1.95 V...
3V sweeping siren alarm
A while back I was challenged by a visitor to the website. He needed a very loud sweeping siren type audio sound generator powered by 3 V...
STMicroelectronics introduces the first automotive microcontroller with AI acceleration for edge intelligence
STMicroelectronics announced the Stellar P3E, the first automotive microcontroller with built-in AI acceleration for automotive edge intelligence...
Ultrasonic range finder with RP2040-Zero & LVGL GUI
This project is an ultrasonic range finder built using the RP2040 Zero board and a 3.2-inch TFT display. It utilizes the RCWL-1655 sensor, which operates similarly to the popular HC-SR04, to measure distances ranging from 20 cm to 300 cm...
555 VCO revisited
It is well known that a 555 timer in astable mode can be frequency modulated by applying a control voltage to pin 5...
Wide-range tunable RC Schmitt trigger oscillator
In this Design Idea, the classic Schmitt-trigger-based RC oscillator is “hacked” and analyzed using the simulation software QSPICE...
Toshiba's new high-side switch acts as ideal diode controller with reverse polarity protection and current blocking function for safe power control in automotive systems
Toshiba Electronics Europe introduces the TPD7110F, an ideal diode controller designed to enable safe power control and flexible design in automotive systems...