Infrared Intruder Alarm

This the circuit warns the trespasser infrared system or Infrared Intruder Alarm circuit that interesting. By when there is a person passes or cut the light infrared.


http://www.elecfree.com/electronic/infrared-intruder-alarm/

ADDER

Basic Electronic Lecture Vedio

Active Diode Circuits Lecture Vedio



Oscillatiors Lecture Vedio



Logarthmic and Anti-Logarthmic Amplifer Lecture Vedio





Filters Lecture Vedio



Unit Junction Transistor Lecture Vedio

Two Tone Alarm with IC LM3900

http://www.elecfree.com/electronic/two-tone-alarm-with-ic-lm3900/

Low pass filter circuit 10KHz using uA741

http://www.elecfree.com/electronic/low-pass-filter-circuit-10khz-using-ua741/

Small IC Amplifier 2 watt using LM380 | Circuit Project Electronic

Small IC Amplifier 2 watt using LM380 | Circuit Project Electronic

Inductive Touch Sensing Keyboard Circuit

Figure shows an example for a 4-key Inductive Touch Sensing keyboard
with key controlled by the IO pins of the PIC® MCU.

The PIC® microcontroller is used to generate a squarewave signal and
to do all the necessary operations forproper detection of the key press event.

Then, RIN-CIN filter converts the square wave output ofthe PWM into
a quasi-triangular waveform.

To calculate the amplitude of the triangular signal, thestandard charging
time equation for an RC network willbe used

MCP2036
DescriptionThe MCP2036 Inductive Sensor Analog Front End(AFE)
combines all the necessary analog functions fora complete inductance
measurement system.The device includes :• High-frequency,
current-mode coil driver forexciting the sensor coil.• Synchronous detector
for converting AC sensevoltages into DC levels.• Output amplifier/filter to
improve resolution andlimit noise.• Virtual ground reference generator for
singlesupply operation.

Features
• Complete Inductance Measurement System:
- Low-Impedance Current Driver
- Sensor/Reference Coil Multiplexer
- High-Frequency Detector
• Operating Voltage: 2.7 to 5.5V
• Low-Power Standby Mode
• Gain and Frequency set by external passivecomponents

MCP2036 Datasheet pdf
http://ww1.microchip.com/downloads/en/DeviceDoc/22186A.pdf

Introduction to Inductive Touch Sensing Vedio

Introduction to mTouch Inductive Touch Sensing Part 1



Introduction to mTouch Inductive Touch Sensing Part 2

Compares with sound level tool | Circuit Project Electronic

Compares with sound level tool | Circuit Project Electronic

Operation Amplifier Circuit and Application Lecture Vedio

Characteristics of Operation Amplifier Lecture Vedio



Characteristics of Operation Amplifier Lecture Vedio



Characteristics of Operation Amplifier Lecture Vedio



Inverter/Non-Inverter Circuits Lecture Vedio



Applications of Op Amps Lecture Vedio




Non-Linear Op Amp circuits Lecture Vedio




Applications of Op Amps Lecture Vedio

Low impedance mini amplifier | Circuit Project Electronic

Low impedance mini amplifier Circuit
This circuit can apply to signal sound source that has low impedance , such as from 4-16 ohm size loudspeakers or telephone earphone that use to replace