Articles and news - 2

Simple low-voltage charge-pumps. Part Operating principle
Simple, low-voltage charge-pumps. Part 1 - Operating principle
Jun 18, 2025 Circuits

These ultra-simple projects are intended to provide two simple functions without the need for transformers or 'esoteric' parts...

Power amplifiers that oscillate deliberately. Part
Power amplifiers that oscillate - deliberately. Part 1 - A simple start
Jun 17, 2025 Circuits

When audio power amplifiers oscillate, the result is often smoke, perhaps with a well-cooked PCB and a side order of fried tweeter. This two-part Design Idea (DI) shows some interesting ways of (mis-)using a common power amp to produce deliberate oscillations of varying qualities...

Build simple soft-action muting switch
Build a simple, soft-action muting switch
Jun 16, 2025 Circuits

The circuit adds a soft muting switch with power-up/power-down muting to a line-level audio circuit...

How hot swap circuits controllers work
How hot swap circuits and controllers work
Jun 12, 2025 Articles

Most mission-critical systems need to be designed for near-zero downtime throughout their useful life. So, if a component of such a system fails or needs updating, it must be replaced without interrupting the rest of the system...

single op-amp solution stabilize laser output
A single op-amp solution to stabilize laser output
Jun 10, 2025 Circuits

Semiconductor laser diodes are often packaged with a photodiode. The output current from this photodiode can be monitored to regulate the output power intensity of the laser diode...

Solar power MPPT control Li-ion battery
Solar power MPPT control Li-ion battery charger
Jun 9, 2025 Circuits

When talking about standalone single cell battery chargers only one popular name came into my mind that is our versatile Li-Ion/Li-Po TP4056 battery charger...

Revisited Three discretes suffice interface PWM
Revisited: Three discretes suffice to interface PWM to switching regulators
Jun 8, 2025 Circuits

Many voltage regulator chips, both linear and switching, use the same basic two-resistor network for output voltage programming...

Get increased output an improved Howland
Get increased output from an improved Howland current pump
Jun 5, 2025 Articles

Voltage to current conversion circuits can take on several forms depending on the nature of the load connections. In those cases where the load is single ended, that is one end must be connected to ground, and where bipolar current flow is required, an Improved Howland Current Pump can be the circuit of choice...

Allegro MicroSystems revolutionizing clean energy generation
Allegro MicroSystems: revolutionizing clean energy generation, distribution and storage with new XtremeSense TMR current sensors
Jun 5, 2025 News

New TMR current sensors deliver stable and lossless current measurements with superior electrical noise immunity in compact designs...

Adaptive resolution ADCs
Adaptive resolution for ADCs
Jun 4, 2025 Articles

Engineers always want to get all they can from their circuits; this holds for analog-to-digital converters. To maximize performance from an ADC, resolution is perhaps the primary spec to focus on...