IC 4093 | Electronic Project Circuits

Posts Tagged ‘IC 4093’

Two tone siren sound with IC 4093

This circuit, you can create a siren has two characteristics, the automatic is a siren. Sirens and custom. The circuit uses CMOS nand gate digital IC number IC 4093 features Quad 2-Input NAND Schmitt Trigger makes it easy to use and very diverse. This circuit can be used with speakers or amplifiers to additional offline.
Principle of the circuit is the circuit switch S2a, S2b, which will run simultaneously at work. By acting as an option that will give birth to what kind siren. If the slide switch positions on a circuit, auto siren sound generator, will be IC1a, IC1b a siren signal generator. The signal will then be extended through C6 with Q1, to drive the speakers. If you move the switch to position 2 is the circuit we need to press the switch S1 to tone siren itself, and will be IC1c, IC1d while switch S1 sound is much higher, but when we switch S1 signal. Gradually lower, the signal generator will be delivered through C6 to Q1 growth to drive speakers as well.

Be the first to comment - What do you think? Posted by admin - December 16, 2010 at 9:47 am

Categories: Alarm systems Tags: electronic siren, IC 4093, siren sound circuit

LED warning water the plants with ic 4093

Electronic users love trees. But no time and work and forget Enjoy water the plants.So the trees dry out.This circuit solves this problem.It also allows us to not water the plants with too often.
Operation of the circuit. When the supply to the circuit. IC1 / 1 (IC 4093) will work together R1, R2, D1 and C2 is the Oscillator generator.The output at Pin 11 is a rectangular pulse to IC1/2.To return the logic state is out of the opposite pin 3.In addition, the signal from the pin 11 will be issued to the temple ground. be test point A and test point B.It will be resistance.Make a signal to stimulate IC1/3, IC1/4.Which is parallel to the current output is high enough to make the LED light.The signal from IC1 / 2 VR1 is a fine stream that flows into IC1 / 3 and IC1 / 4. To suit the soil to measure.If the ground for us to measure the humidity Li LED1 will light extinguishes.And if the ground is dry LED1 light depending on adjustments VR1.

Be the first to comment - What do you think? Posted by admin - October 28, 2010 at 8:30 am

Categories: Detector, Electronic Control Tags: IC 4093, moisture sensor, Water sensor alarm

Metal detector by IC 4093

The circuit shown must represent the limits of simplicity for a metal detector. It uses a single 4093 quad Schmitt NAND IC and a search coil — and of course a switch and batteries. A lead from IC1d pin 11 needs to be attached to a MW radio aerial, or should be wrapped around the radio. If the radio has a BFO switch, switch this ON.
Since an inductor resists rapid changes in voltage (called reactance), any change in the logic level at IC1c pin 10 is delayed during transfer back to input pins 1 and 2. This is further delayed through propagation delays within the 4093 IC. This sets up a rapid oscillation (about 2 MHz), which is picked up by a MW radio. Any change to the inductance of L1 (through the presence of metal) brings about a change to the oscillator frequency. Although 2 MHz is out of range of the Medium Waves, a MW radio will clearly pick up harmonics of this frequency.

Source: Copyright Rev. Thomas Scarborough
The author may be contacted at scarboro@iafrica.com