ELECTRONIC CIRCUIT HOBBY

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More circuit

Delay Timer

Clapp Oscillator

Mains on Delay Circuit

Pressure Pad-Step On It

Simple Siren

Inductance Calculations

Electronics stethoscope

Universal Ding Dong

10Vto12V LED Bargraph

Green USB Switch

Smooth Flasher

Bell Alarm

Breadboard Project Protector

LEDLighting For Your CAR

BallastForEnergy-Saving Lamps

White Noise Generator

Put That Light Out

Store It Quickly !

 

 

Receiver-Transmitter

Medium-Power FM Transmitter

Quality FM Transmitter

4 Watt FM Transmitter complete

Infrared Receiver

Infra Red Transmitter

 

Audio Video circuit

Balanced microphone preamplifier

Audio Power Amplifier

100 Watt Single Chip Amplifier

Pre Amp Microphone

Stereo Noise Filter

Programmable Gain Amplifier

Class D Amplifier

Difference Amplifier

HeadphoneAmplifier

Cassette Recorder Circuit

8 Watt Audio Amp LM383

Signal Powered DynamicCompressor

Video Isolator

Loud Speaker On Delay

LA4440StereoAmplifier

 

Power Supply

Computer ControlledPowerSupply

Adjustable1.2Vto37V1.5A Supply

A few Simple Power Supplies

Solar Cell Voltage Regulator

Battery Booster

QuickInfoDesignRegulator

12V Fan Directly on 230V

Mini Voltage Generator

12V to 9V Converter

12VLeadAcidMonitor

Car Battery Monitor

Electronics Fuse

 

Digital Logic

Logic Probe With Pulse

LED Logic Flasher 

Decimal to BCD Encoder

Phase Detector

Johnson Counter

Ring Counter

 

Charger

12-V NICAD Battery Charger

Fast Charger for NICAD Batteries

NICAD Charger

SuperSimpleNiCd/NiMH Charger

Dual Mode Charger

 

 

Gadget

Scarecrow Animal Deterrent

Electronic Gong

Automatic Aquarium Feeder

Scan Mate

Polyphonic Door Bell

Simple1hz generator

 

Microcontroller

24CxxEEPROM Programmer

SPI Flash Programmer

 

LAN Network

Null Modem Cable

USB to RS 232 cable

RJ45 Network Cable Tester

 

Oscillator

CMOS Squarewave generator

TTL Square wave generator

10Mhz Oscillator

 

Detector and Alarm

Touch Activated Alarm

Light Dark Sensor

MissingPulseDetector 555

MissingPulseDetector

ZeroCrossing Detector

SimpleOne-wireTouch Detector

FreezeDoorAlarm

DarkLightActivatedRelay

Electronics Compass

 

New project

GSM SIM CARD Cloning

Universal GSM/CDMAdataCable

Converter 220V-110V PS2 Play station

LightControllerUsing PIC 16h873

USB to Serial Converter

USB AVR and AT89S5x Programmer

CellPhoneDetector

On-Off ThermalControl

3AmpereBatteryCharger

CurrentSensor

UltrasonicRangeMeterWithout uC

VoltageToCurrentConverter

CurrentToVoltageConverter

Giga Hertz Signal Detector

Rat, Bat, Mosquito Repeller Result Exp

Inverter-Power

Home Made AC

Very Simple DC to AC converter

New DC to AC Converter

VoltageMultiplierCircuit

TripleVoltage

QuadruplerVoltage

8 watt Fluorescent Lamp Inverter

 

 

Other Circuit

  LED&LampFlasherMetronome

  SimpleLightMeter

  LightSensitiveVoltageDivider

  LightActivatedRelay

  AutomaticEmergencyLighting Unit

  SuperSimpleTouchSwitch

  Voltage Mirror

  741 Light-Dark Sensor

  60 Hz,10Hz,1Hz Time Base 

  Micro Spy with FETs

  TTL Micro-Spy 

  Building a Soldering Iron

  Important Things about Battery

  PWM Motor Control

  High Stability Crystal Time Base

  Auto Trigger Level Control

  Single-transistor timing circuit 

  Discrete PWM Generator

  Integrator

  MMC unlock Clip

  Lighting Effect Generator

 

 

 Bonus Download

 Units Converter

 89S-ISP

 TopViewSimulator

 TSControlEmulator8051

 WinScope

 Zelscope10

 WinSpectrogram

 The Secret

 more...

 

 Electronics Tutorial

 Unijunction Transistor

 Bels Decibel dan dB

 Resistor

 Is high/Current get shock ?

 

 

DC to AC converter I

Simple DC to AC converter

 

DC to AC converter II

More DC to AC converter

 

PWM for Hydrogen generator

For optimized at low voltage to produce hydrogen

 

Post-box Monitor

Has the postman been yet?

 

Fog Lamp Sensor

For several years now, a rear fog lamp has been mandatory for trailers

 

Gas Flow Meter

Monitoring gas flow

Portable Thermometer

Itís usually is a good idea to check the temperature before setting off for an outdoor activity

 

Multitasking Pins

Itís entirely logical that low-cost miniature microcontrollers have fewer Ďlegsí than their bigger brothers

 

Mosquito Repeller

With the return of the fine weather, youíll doubtless be enjoying lazing around of an evening on your patio

 

Wireless Audio Transmitter

Sitting peacefully under a tree at the bottom of your garden you may feel like listening to your favourite music from your hifi

 

LED Tester 

This simple LED tester consists of a current source

 with a potentiometer

 

 

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