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...

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

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...

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...

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...

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

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...

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

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...

One classic set you’ll see in most гvintage mystery movies is an interrogation room with a “two-way” mirror in one wall. This cool gadget lets the witnesses see the suspects from another room while the suspects can see only themselves...