4093 Circuit Projects (21)

Browse through a total of 21 4093 Circuit Projects.

Door Window Alert

Opened Window or Door Alarm

T.K. Hareendran - 08/30/2013

Economical circuit of an electronic alarm, notifies you when your door or window is open, is presented here. [...]
door sensor circuit

Low Cost Door Sensor

T.K. Hareendran - 08/05/2013

This compact and affordable door sensor mechanism uses a Hall-effect sensor fixed at the corner of the door [...]
flashing lights circuit schematic

Flashing Lights Circuit

P. Marian - 12/06/2011

This flashing lights circuit can be used as beacon. The assembly consists basically of two blinking steps that [...]
simple water detector circuit schematic

Simple Water Detector Circuit

P. Marian - 10/22/2011

This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It [...]

IC 4093 Datasheet

P. Marian - 04/29/2011

The CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a 2-input NAND gate with Schmitt-trigger action [...]
light fence circuit schematic

Light Fence Security Beeper

T.K. Hareendran - 01/10/2011

General purpose hobby circuit of a simple light fence security beeper is presented here. This circuit can be [...]

Low Current Flasher Circuit

D Mohankumar - 08/25/2010

This is a low current flasher consumes only a few Micro amperes current and lights a high bright [...]
refrigerator alarm

Refrigerator Alarm Circuit

P. Marian - 07/05/2010

Use this refrigerator alarm circuit to prevent leaving the fridge door open by sending out an alarm signal [...]
plant watering monitor

Plant Watering Monitor Circuit

P. Marian - 07/03/2010

This plant watering monitor circuit is intended to signal when a plant needs water. A LED flashes at [...]

Electronic Bicycle Horn Circuit

P. Marian - 02/06/2010

This simple electronic bicycle horn circuit uses only one gate of a 4093 quad 2-input NAND Schmitt trigger, [...]
fake led alarm

Fake LED Alarm Simulator Circuit

Received by Email - 01/08/2010

This circuit simulates an alarm to discourage thieves and it is originally designed to be used on bicycles [...]
electronic mosquito circuit

Electronic Mosquito Sound Generator Circuit

Received by Email - 11/07/2009

The circuit behaves like a true mosquito: once the light dims, the mosquito starts an annoying buzz. When [...]
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