Electronic Toggle Switch

The Project works as electronic toggle switch. The circuit is based on CMOS CD4013 Flip Flop IC, The circuit has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. A short button press of a tactile switch SW1 latches the circuit ON and another toggles it back OFF. Relay switch

Read more

Long Duration Timer

This timer project can be used to switched ON/OFF any device after set time, this circuit can be used in lots of application like  switched ON/OFF Radio, TV, Fan, Pump, kitchen timer, the circuit describe here its unique in its own. Project has been designed around two CMOS IC CD4001 and CD4020.  Two gates of CD4001 make the oscillator and

Read more

32 Seconds Voice Record Playback Circuit

Project   has been designed around Win bond’s ISD1616 IC (SMD) IC, which is fully integrated, single-chip, single massage voice record and playback device ideally project suited to a variety of electronics systems. Massages are stored in flash memories made in unique Multilevel Storage Technology (MLS). Therefore, voice or audio data are stored directly into the memory in their natural form

Read more

Classic Timer Based On 555 Timer

Classic AC 230 V Timer project can be used in all application requiring a timer of up-to 3 Minutes to operate or control any AC mains load of up-to 200 Watts.  This project is based on the Classic 555 Timer IC, triggering a TRIAC.  Input and Output is Optically Isolated.  Supply input 12 VDC  Mains supply input 240 VAC or

Read more

Lux Meter Module – Light Meter Schematic

  LUX Meter project has been design to measure the illumination.  Illumination is luminous flux falling on surface area of photo diode.  This illumination converted to corresponding voltage using Op-Amp circuit. Supply 9 VDC PP3 Battery @ 20 mA  Onboard Photo Diode  Onboard preset for calibration  Range selection via jumper 10mV/LUX, 1mV/LUX, 0.1mV/LUX  Interfacing is via berg connector  Power-On LED

Read more