Digital logic circuit

This is digital logic circuit. Which use digital IC kind CMOS and TTL many the number.
It be the character gate very the circuit has appropriately. It is the measuring instrument logic
show electricity position low or high get. May show with LED or utter hear all right.
The gate IC come to use produce sound frequency or the other circuit

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Circuit Alarm

This be simple circuit alarm diagram for extremely the electronics everyone.
Try build keep be usable example , alarm system of the usability
be home security alarm circuit, car alarm circuit, fire alarm circuit,
burglar alarm circuit etc. By compose many circuits as follows �

Proximity Detector Using CS209
Rain Alarm using NE555
Low Cost Fire Alarm Circuit Using Transistor
Fire Alarm Using Thermistor
Chamberlain Wireless Alert System
Water Softener Circuit using NE555
8-Zone Water Sensor Alert Kit
Water Sensor Alarm
Wireless Portable Video Security System LCD - Outdoor Camera
Skylink WT-433 Window-Door Sensor
Personal Alarm using IC 74HC04
Lamp flashing alarm automatic
Car Alarm Simulator
Car Burglar Alarm system with radio wave signal
Car Burglar Alarm timer delay using NE556
Simple Metronome using transistor
Warbling Alarm Circuit with tone Generator
Wireless Home Security System Calls Your Cell Phone
Home and Vehicle 2-Zone Alarm Pager System
Emergency power siren 6 watt
Water Sensor Alarm Kit
Car Alarm Simulator by LM324
Water Sensor Alarm using LM380
Two Tone Alarm generator using LM3900
Electronic Watch Dog Kit
Mini Emergency Light by 9013 transistor
Headlight Alarm
Powerful Siren by BC337
One-IC two-tones Siren with IC 4093
Electronic Siren by IC Digital
Single Zone Digital CMOS Alarm
Miniature Loop Alarm
Red Alert Startrek Alarm by IC 555
American Police Car Siren by IC 555
British Police Car Siren by IC 555
Two HiJack Alarms by 4001
Water Alarm with LM380
Two Tone Alarm with IC LM3900
Mosfet 6 Watt Siren
Travel Touch Alarm
Assortment of Siren Circuits

schmitt trigger comparator

LM555 Timer Used As A Voltage Comparator Or Schmitt Trigger

The next section shows how the LM555 timer could be used as a voltage comparator or a wide offset Scmitt Trigger. Applications for which it ...

Touch Motor Control by SCR and Schmitt Trigger

This circuit designs for control DC Motor 12Volt. By use the touch once Motor as a result turn go to once. When use a finger touches the ...

cmos crystal oscillator circuit

Crystal Oscillator with IC Digital 74HC04

The circuit above is a parallel resonant oscillator circuit. ... 32.768 KHz oscillator using a watch crystal · Cmos Logic Clock Oscillator ...

X'tal Oscillator Frequency by 74LS04

This circuit may used as clock frequency for many digital circuits. ... 32.768 KHz oscillator using a watch crystal · Cmos Logic Clock Oscillator by Ic 4011 ...

CMOS Crystal Frequency Multiplier

A disadvantage is that such a circuit would quickly become quite ... 32.768 KHz oscillator using a watch crystal · Cmos Logic Clock ...

Simple diagram of Vu meter

This is a simple vu meter people normally use Vu meters to get a good appearance for their amplifiers and for their audio setups.Here I have used common Ic LM3915 and LM3916.You can fix 19 LEDs for this circuit diagram.




Note

# you can operate this circuit with 12V power supply

# Fix this circuit ona PCB to get good result.

NE 555 Pulse generator

Most of our members asked pulse generator circuits. so this is a simple and common circuit.and you can use this with your light circuit diagrams too.



Note

# Don't supply more than 15V

Simple Audio power meter

This is simple audio power meter.When you use high power speakers this circuit is so important Because you can keep your speakers without burning.Here When the speaker out puts 1W green color LED will light up,for 1.5W you will be able to see orange color,When speaker out puts more than 3W you will be able to see red color.





Note

# The power levels mentioned are valid for 4-Ohm speakers. For 8-Ohm speakers you have to divide all the resistor values by two

# this circuit cant drive more than 40W continuously.

# If you want more LEDs you can attach LEDs as the same way

AC powered LED Indicator

This is an indicator you can use this circuit with your Ac electronic items.Here I have used normal Led.Attach purple color connections to the AC line.I suppose this will be a wonderful circuit for you.



Note

# This is not a good circuit for kids Because here we use 230V So don't try to build this.

# Build this circuit on a PCB

FM Stereo Transmitter with IC BA1404

ntegrated FM radio transmitter that I like better for ซ Pure Born BA1404 IC is a single signal in stereo to FM radio quality as the mineral quartz frequency with Bristol. Not a signal stir Suitable for the study of radio transmitters. Improve the balance. Send to a higher power. Frequency is 88MHZ - 108MHz frequency area covered. 3V low power and culture is running. You may also be adapted to any set of signals for iphone Link

Simple Digital Counter by 4026

Range from simple digital ICs No. 4026 as driver tubes and a range of LED 7 counted. Has great convenience.
For experiments to learn more digital electronic circuit according to Link.

One shot circuit

The one short circuit, be the circuit delays one kind. It work with something trigger of logic digital signal.
It cause way change output follow while note. Which there are various circuit examples for consider,
choose use cough abundantly that is appropriate.

555 timer Mono stable (one shot) circuit
19 Apr 2007 ... The two circuits below illustrate using the 555 timer to close a relay
for a predetermined amount of time by pressing a momentary N/O push ...

One - Shot Timer by IC 555
This is digital circuit, It is One - Shot Timer make by IC 555. Power supply 5-15V,
Output pin 3, Input pin 2 Trigger input. One - Shot Timer by IC 555.

One-Shot By IC Quad Timer 558
23 Jul 2007 ... One-Shot By IC Quad Timer LM558 When mention the circuit
One Shot friends at take an interest digital side may know good that how much is it ...

Simple Touch Switch One Shot by 4011
17 Apr 2008 ... Here is a simple touch control switch, I use IC 4011. Logic HI
at output is timer pulse delay control by C1 1S = C1 4.7uF(micro farad), ...

Monostable Flip Flop
19 Apr 2007 ... The circuit then remains in a stable state until the next input.
The one shot circuit on the right employs two logic inverters which are ...

One-Shot by IC 74LS02
15 Aug 2007 ... This is circuit Digital One-Shot, use IC TTL Digital 74LS02 :
QUAD 2-INPUT NOR GATE . Time Output = 0.8xRxC Related Links More digital ...

Monostable Multivibrator by 4538
26 Mar 2008 ... When you trigger the chip the output sends off one single pulse or one ...
More circuit about one shot · One-Shot By IC Quad Timer 558 ...