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Light Laser LED Circuits
Infrared sensing automatic door control circuit diagram with KC778B
The circuit is shown as the chart. It is a control circuit which composed of infrared specific integrated circuit KC778B and KC778B is the center of the circuit. It s surrounded by a pyroelectric infrared sensor head PIR, light control and light control adjustment circuit, a three-state select control, automatic restart function and manual...
Infrared alarm barrier circuit
This infrared alarm barrier can be used to detect persons passing through doorways, corridors and small gates. The transmitter emits a beam of infrared light which is invisible to the human eye. The buzzer at the output of the receiver is activated when the light beam is interrupted by a person passing through it. Infrared Light Alarm Transmitter
TX05C-R infrared surveillance alarm circuit
TX05C-R infrared surveillance alarm circuit is shown. It can be used for surveillance of walls, windows, doors and various restricted areas. If someone breaks into or over the alarm position, it will sound to play a security role. The circuit consists of transmitter module, receiver module, time-base circuit, power circuit, the speaker and other...
The infrared sensor security device circuit
See as the circuit, it consists of the infrared sensor control circuit, relay control circuit, music generating circuit and so on, which can be used in infrared alarm, timing control and other spots..
The passive human body infrared sensor circuit
No matter what kind it is, passive human body infrared sensor circuits are almost the same with the above, maybe some has less stages. This circuit in the figure is got from the NICERA producer, which is classical. The stage of front-end is the low frequency signal amplifier, the magnified times are 100, then the signals pass R6 and C5 before...
Infrared automatic hand dryer circuit diagram
Infrared automatic hand washing device 3
The circuit work theory This infrared automatic hand washing device circuit is composed of power supply, infrared transmitting circuit, infrared receiving circuit and control circuit, the circuit is shown in the figure 9-121. The power supply circuit is made of fuse FU, power transformer T, bridge rectifier UR, filter capacitors C1, C2 and three...
Infrared reflectance automatic hand dryer circuit diagram
The Infrared Demodulation Circuit Using Low-Noise Amplifier
This circuit uses the HgCdTe demodulation device which can be cooled to 77K in liquid nitrogen. It uses a constant current bias for the demodulation device which is connected to the input port. The voltage`s amplification factor is 200 and the bandwidth is above 1MHz. The noise factor is 1.5dB when use the typical demodulation device. This...
Thermal pyroelectric infrared sensing automatic light circuit (6)
As shown in the figure, it isa sensing automatically lightmade by newHN911L pyroelectric infrared detection module. The HN911L integrates high - sensitivity infrared sensors, PIR, amplifiers, signal processing circuit andoutput circuit. Itisable to remote sense the faint infrared signals from human motion. The lights can be turned on when people...
Schematic of The Infrared Rays Wireless Headphone
Because of the transmitter circuit of the inductive headphone must installed on the room wall or on the ceiling, so the inductive headphone can not be used outdoor, this is the main weak point of the inductive headphone. But the infrared rays wireless headphone is not in this case, for the flexible infrared rays transmitter circuit, it can be...
Ceiling fan infrared remote control circuit (2)
DTMF Multi-channel code decoding infrared remote control circuit
Figure (a) is the infrared emission circuit that composed of 12 the keyboard and S2559. Figure (b)shows DTMF decoder circuit and channel control circuit composedof the MT8870. Figure (c) is the voltage amplifier circuit composed of two-op ampLM358..
DTMF coding multiple-channel infrared remote control switch circuit
The DTMF codec is the abbreviation of the dual-tone multi-frequency codec. The multiple-channel infrared remote control switch circuit which is composed of the DTMF is as shown in the figure. It is composed of the infrared remote control signal emitter, the infrared receiving signal amplifier, the DTMF signal decoder, the 12-channel data...
DTMF encoding and decoding six-channel infrared remote controller
DTMF infrared remote control circuit
The DTMF infrared remote control circuit. The DTMF encoded signal can be decoded by the special decoder and the PLL audio decoder LM567. But the DTMF encoded signal which is decoded by only one decoder, has only one frequency, one group of control signal is composed by two decoder`s output frequency. The infrared remote control signal which is...
Direct infrared remote control switch circuit diagram composed of LS-2
LS-2 remote control switch infrared sensor module is basically the same with the LS-18, in addition, it isused as a reflector. LS-2 Pin diagram form LS-2 internal block diagram Electrical parameters LS-2 remote control switch module operating voltage is 4 ~ 6V (DC), typical value is 5V; Operating current is 2 ~ 4mA; Control output terminal (L1,...
Electric fan infrared remote control circuit (Greatwall FS26-40)
Four channels infrared remote controller circuit diagram
The receiving circuit: the infrared signal is inputed to MC3373 from 7 foot by phototube, the amplified signal outputs from 1 foot, it is transported into the 12 foot of decoder 8802. When the transmitter F is pressed, the voltage of 8802`s 11 foot up to 2. 5V, V1 turns on, K1 pulls in, M is forward rotation. When it receives B signal, 11 foot`s vo
HT6337 (electric fan) infrared remote control receiving decoder circuit
The HT6337 is designed as one kind of infrared remote control receiving decoder circuit that can be used in the electric fan application. It uses the 28-pin dual-row DIP package, the matching model is HT12C. The HT6337 is one of the series products. The features of it are as shown in table 2-16-1. The pin-1, pin-7 - pin-12 have the function...
Human infrared remote sensing lamp circuit
The diagram is human infrared remote sensing lamp circuit. It uses trace infrared heat sent out by human to remote control the open or close of lap. This human infrared remote sensing lamp trigger sensitivity is very high ( can work in 10m distance), anti-jamming ability is strong, and ittruly achieces full automation..
Infrared remote control energy-saving lamp circuit diagram
LJC2200 infrared ultrasonic and radio remote control receiver circuit diagram
SC41343 general infrared ultrasonic or RF remote control launch coding circuit
The SC41343 is designed as one kind of infrared, ultrasonic or RF remote control launch coding circuit. The internal circuit is composed of the sequence generator, control logic circuit?4-bit shift register?data extraction circuit and the latch circuit. Features It uses the binary or ternary to find the address;The ternary addressing coding has...
SL517 (electronic toy) audio RF or infrared decoder circuit
The SL517 is designed as the audio, RF or infrared decoder circuit that can be used in the electronic toy application. The internal circuit is composed of the analog amplifier, the frequency divider, the bistable circuit and the driver. Features It uses the CMOS technology.The power voltage range is wide, the value is 2-7.5V.The quiescent...
Infrared sensor high voltage dangerous voice warning circuit diagram
Pyroelectric infrared sensor head is same with the figure. When it detects the human body infrared signal in guarding zone, the sensor head will output a positive jump pulse signal, this signal is added to input terminal P point. IC1 adopts 555 time base circuit, the monostable trigger circuit is composed of 555 and R3, C2. P`s jump signal is...
Infrared remote control receiver for Media Centers
A few time ago I decided to create a media center box to replace my DVD player, sattelite receiver, VCR and my kid`s Play Station 2, toone device. So, I made a core 2 duo processor system that actually replaced with succeed, all my electronic devices. The only thing that was missing was a remote control to switchOn/Off my Media Center. After I sea
Infrared Light Fan Remote control system
Infrared (IR) Proximity Detector
This is infrared (IR) proximity detector circuit. A matched infrared emitter and detector pair is used in this circuit. The voltage controlled oscillator..
555 Infrared Transmitter-Receiver
Infrared transmitter and receiver circuit shown in the schematic diagram below can be used as remote control. The transmitter is basically an oscillator..
General Infrared Remote Controlled Relay
This relay circuit is controlled by almost any type of infrared remote controller. This circuit works on assumption that almost all remote controller use high..
Battery Powered Infrared Remote Control Extender
This is a battery powered IR Link which may be used in more than one room. The standby current is extremely low - so battery life is excellent. And by shutting down in the presence of extraneous IR radiation - it copes with the problem of excessive output current. This circuit is not powered directly from the battery. When a remote control signal
Light Sensing Circuits
Light Dimmer Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
Digital Signal Integrity
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