App note: Dynamic siphon steals current from USB port

rsdio tipped us to an app note onĀ USB-port power: Very cool! This is like an audio ducking compressor for voiceovers, but for charging. This circuit exploits all the power available from a USB port by dynamically adjusting the amount of current delivered to the load, thereby siphoning a relatively constant (and maximum) current from the […]

App note: High-quality white noise generator

A white noise circuit could be interesting part of a modular synthesizer. This design has no 1/f component, meaning no annoying repeating sounds in the white noise. In this noise-generator circuit, the amplifier (MAX4238) has no 1/f component in its input voltage noise. It amplifies its own input-voltage noise with a feedback network made with […]