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Air Flow Detector
Air Flow Detector
June 22, 2010

This simple circuit uses an incandescent lamp to detect airflow. With the filament exposed to air, a constant current source is used to slightly heat the filament. [more]

Adjustable High/Low Frequency Sine wave generator
Adjustable High/Low Frequency Sine wave generator
June 22, 2010

This circuit uses the versatile MAX038 function generator. Although in this circuit some of the advanced characteristics of this IC are disabled, you can generate Sine, Triangle, Square waves. [more]

AC Current Monitor
AC Current Monitor
June 22, 2010

This circuit was designed to remotely monitor when a couple of electric heaters have been left on. [more]

A small FM transmitter (SMD)
A small FM transmitter (SMD)
June 22, 2010

This SMD FM transmitter has an operating frequency of about 80 to 115MHz. Under reasonable circumstances you will be able to receive its signal at a distance of about 200 meters. [more]

8 Line Intercommunication using 89c51
8 Line Intercommunication using 89c51
June 22, 2010

This project is aimed to make the low cost intercom system by which eight telephone lines can be interfaced with this hardware. [more]

6V Ultra-Bright LED Chaser
6V Ultra-Bright LED Chaser
June 22, 2010

It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly. [more]

6V to 12V Converter
6V to 12V Converter
June 22, 2010

This inverter circuit can provide up to 800mA of 12V power from a 6V supply. [more]

60W Linear amplifier
60W Linear amplifier
June 22, 2010

The 60 Watt linear amplifier is simple all solid state circuit using power mosfet IRF840. [more]

60W Guitar Amplifier
60W Guitar Amplifier
June 22, 2010

This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(s). The advantages for a guitar amplifier are the very simple circuitry,... [more]

60W Bass Amplifier
60W Bass Amplifier
June 22, 2010

This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(s). [more]



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