Electronic

Electronic circuits diagrams ,electronics projects and electronic circuits tutorials

Electronic schematics circuits diagrams , electronics projects , electrical wiring diagrams , schematic software and electronic circuits tutorials .

This website is dedicated to all electronic hobbyist which can find here many electronic schematics ,  projects software and tutorials .

On this electronic schematics and projects website you can find electronic circuits from many categories of electronic : audio systems , power supply circuits ,  radio frequency circuits and many others .

Electronic schematic circuits , articles and all others stuff presented here are just for educational purpose .

If have any question about any electronic schematic project from this site or other circuits please use the  .  For any suggestions and proposals or something else please complete the mail form .

Electronic touch switch circuit 

Electronic horn circuit schematic 

A very simple electronic horn that require few external components and is very easy to construct can be build using this circuit diagram .  When the K switch is closed the oscillator formed by transistor T1 and T1 will generate a rectangular signal . This circuit will consume a maximum output power around 40 watts  , so the audio signal of this horn circuit will be a little loud . This electronic horn circuit require a 6 volts DC power supply . The T1 , T2 transistors must be a BC107 type or similar . The T3 transistor should be a 2N2613 npn transistor or BC 140,141, 2N1990, 2N2102, 2N2405 or other similar type . T4 transistor must be an AU106 PNP transistor or AU 113, AU 213, 2N5324 or other similar type .
The D1 diode that is used for protections of the T4 transistor must be an 1N5400,1N5401,1N5408 or other similar type .
MAX668 16 volts power supply 
A very simple and interesting power supply can be constructed using this electronic circuit . This power supply is based on the MAX668 constant-frequency, pulse-width
modulating (PWM), current-mode DC-DC controller that is designed for a wide range of DC-DC conversion applications  . The MAX668 integrated circuit supports a wide input voltage range from 1.8V to 28V  .  The MAX668 has operating frequency between 100kHz to 500kHz,
soft-start, and a SYNC input that allow the MAX668 oscillator to be locked to an external clock.
This power supply circuit require an input voltage of 11-14.3 volts and will provide a 16 v output voltage at a maximum current of 4.4 amperes .
At the maximum output power that is around 70 watts , this power supply circuit (based on MAX668) has a efficiency around 90% .
Capacitor C2-C5 are connected in parallel for ripple current rating. Fewer caps may be used if ripple current ratings allow .