Circuit Lake

Electronic Project and Circuit Collection
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Audio Detector Circuits

October 21, 2008 By: admin Category: Audio, analog, project No Comments →

This circuit is for detecting any audio signal with justable noise offset. It could be used to generate a radio mute signal eg. from a PDA.

The circuit is consisting of: (more…)

RS232 Transceiver Circuits

May 19, 2008 By: admin Category: Digital No Comments →

There are serveral rs232 transceiver circuit which commond used for communicated between microcontroller and other devices such PC or any devices that use rs232.Here is a collection of rs232 transceiver circuits that popular for today.

2 transistor
The circit below use 2 transistor and some components to provide RS232 transceiver.It usefull for cheap application that dose not long lenght.

RS232 using Transistor
Fig 1. Transceiver with 2 transistor

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