That said, Schiit’s current high-end solid-state Mjolnir 3 headphone amp (the company also sells tube-based products) goes for $1,199-$1,299, depending on color. Conversely, when the Liquid Spark ...

This paper describes the design and experimental results for a 3.2-V operation single-chip AlGaAs/GaAs heterojunction bipolar transistor (HBT) monolithic microwave integrated circuit (IMMIC) power ...

GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects.

This sound-operated timer is based on the LM324 quad-operational amplifier and NE555 timer. Time delay can be set from a few seconds to 30 minutes. It can also be used as a sound-sensitive burglar ...