We found this micro amplifier in a technical documentation from National Semiconductor. The circuit can be used on an experimental phone, being powered even by alternative power sources.
The circuit shown in the figure can either be used to activate a high-power lamp or LED for...
This circuit was found in a 1999 British magazine (ETI). It is a device that receives the signal...
The figure shows how to couple two CMOS circuits using an optical coupler to achieve isolation. The...