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TDA2052 Active Audio System 31 Mar 2013 | 11:38 pm
This active audio audio system use three TDA2052 chips and 5 speakers ( one woofer, two tweeters and two midranges ). For this TDA2052 active audio system we need dual 20 volts power supply and five v...
VHF UHF Low-Noise Amplifiers using MAX2664 MAX2665 31 Mar 2013 | 11:38 pm
A very simple VHF UHF Low-Noise amplifiers circuit can be designed using the MAX2664 and MAX2665 ultra-compact LNAs for VHF UHF applications.These devices incorporate a broadband LNA with an integrate...
Circuit Keeps Wandering Children and Pets Nearby 31 Mar 2013 | 11:38 pm
The receiver circuit in Figure 1 sounds an audio alarm when the transmitter (Figure 2) moves beyond a designated perimeter. The transmitter, a voltage-controlled oscillator, operates at approximately ...
Radiator Temperature Iindicator 31 Mar 2013 | 11:37 pm
This radiator temperature indicator can be designed using electronic circuit diagram bellow .Temperature indicator consists of two special zener diode, D1 and D2, connected in series to ensure accurac...
0 to 40V Lab Power Supply 31 Mar 2013 | 11:34 pm
A very lab adjustable power supply that can provide an output voltage between 0 and 60 volts can be designed using this circuit diagram . This lab power supply can be designed with LM723 chip or for h...
12V to 250V Converter 31 Mar 2013 | 11:34 pm
A very simple portable 12 to 250V converter can be designed using this circuit diagram. This 12 to 250V converter is designed for portable use with a 12 V car battery.A built astabil multivibrator T1 ...
FAN7710 Ballast Control 31 Mar 2013 | 11:33 pm
Using the FAN7710 Ballast Control IC for Compact Fluorescent Lamps developed using Fairchild’s unique highvoltage process and system-in-package (SiP) concept can be designed a very simple low cost flu...
0V to 50 Volt Variable Regulator 31 Mar 2013 | 11:32 pm
A very simple variable power supply circuit can be made using this electronic circuit diagram .This variable regulator circuit will provide an variable regulated output voltage , between 0 and 50 volt...
300m FM Transmitter 31 Mar 2013 | 11:30 pm
This FM transmitter circuit is very simple and it has a acceptable transmission . The signal transited from this FM transmitter circuit can be received at almost 300 meters in open air .The circuit re...
Battery Circuit for Backup and Standby Operation 27 Mar 2013 | 09:42 am
The circuit was designed to create a spare and reserve power source with the use of batteries during the absence of power from the mains. BD139 – NPN power transistor used for driver stages in hi-fi ...
