Vacuum Tubes Valves
Musical & effects
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Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
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AC to DC & DC to DC
Solar Cell Circuits
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Switching Power Supplies
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Digital to Analog
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Data Bus Circuits
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RF Converter Circuits
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voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
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Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Remote Control Circuits
Remote Control Circuits
Appliance Remote Control Arduino Project
Starting from today I will try to post interesting Arduino projects from around the web. I am novice in this domain but I am giving my best to fully understant it. I must say from the begining that the projects are not developed by me and I will link the original source. This Arduino project uses a general-purpose appliance remote control that...
IR remote control dimmer light circuit diagram
Is infrared emission circuit diagram. NE555 circuit generates a 40kHz pulse which is sent by the infrared emission control SE303 after beingamplified by VT. (b) is remote receiver and infrared dimming circuit composed of the KA2184. LS7232 is an integrated dimming circuit.
Radio remote control dimmer circuit
As shown in the diagram above, it is a radio remote control dimmer circuit. The radio remote control dimmer circuit adopts micro radio transmit/receive module and light modulation ASIC. So the circuit is concise and easy to produce. It works reliably. And the whole switch has only two wires for output.It can directly use it to replace the...
16-channel remote control circuit schematic (T998C)
The circuit is not only used for the latch output, but also for non - latched output, SB is control switch. When SB and VDD are turned on, it is in the latch output state, then the sixteen output ends are out control of Io output state; when SB and Io output ends are connected, it is in non- latched output state, then the output states are under...
Ceiling fan infrared remote control circuit (2)
Composed of HS101/HS201 4 channels remote control switch circuit diagram
HS101/HS201 are a pair of tiny radio transceiver components. The working frequency is 280MHz. It is suitable for digital signal transmission. The control distance is 30 ~ 100m. All the components including the antenna are packaged in one. It is easy to use. The four-channel remote control switch circuit composed of HS101/HS201 is shown as above.
Composed of T630/T631 long-wave wireless remote control circuit diagram
The circuit uses the long-wave wireless transceiver T630/T631, controlled 6-channel load. The features are low-power, high anti-interference ability and simple structure etc..
Composed of TDC1808/TDC1809 digital coding control circuit diagram
TDC1808/TDC1809 is a pair of wireless remote control transmitter and receiver component. They use an internal antenna, transmitting digital signals or analog signals. It is suitable for a variety of wireless remote control device. The features are small volume, long remote distance, high anti-interference ability etc. Digital coding control...
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 car remote control circuit diagram
The electric car remote control circuit diagram not only can make the model car move forward and backward, but also turn left and right turn, it is simple, easy to operate. Radio remote control receiver demodulation circuit uses TWH9238 components, the matching remote control transmitter component is TWH9236. This can be used for learning and...
Electric fan infrared remote control circuit (Greatwall FS26-40)
Electric single-girder crane remote control circuit diagram
Electric single-girder cranes is also known as electric hoist. It is commonly used in small factories lifting handling equipment. Usually it is always used with drag line switching noytoperation, which is not very convenient. The circuit is composed of radio remote control radio remote control component TWH9236/38 circuit. It is shown as above....
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...
Heterodyne remote control receiving circuit diagram
TDA5200 is a low-power single-chip ASK superheterodyne receiver circuit. Its operating frequency range has two block. They are 868 ~ 870MHz and 433 ~ 435MHz. The circuit is highly integrated. It has few external components, perfect function. It is a single receiver circuit with excellentperformance..
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..
Improved one-shot timer circuit composed of 2 PUT
Figure 1 is an improved trigger timing circuit composed of 2 PUT. If you add the set signal, the circuit will be set, transistor VT1 turn to the conduction state, the relay K will be energized action. It supplies voltage for the delay voltage at the same time. Therefore, the capacitor is charged by C1. PUT1 is conducted by positive voltage. C1...
Infrared remote control energy-saving lamp circuit diagram
LJC2200 infrared ultrasonic and radio remote control receiver circuit diagram
Monitor and TV high-voltage (KV level) protection circuit diagram
One kind of wireless remote control circuit
The remote control transmitter is composed of the DTMF generator and the FM transmitter circuit. Here we use one piece of UM91214B phone specific IC to produce the DTMF signal, the 3V power supply voltage is supplied by the 3V zener tube D1.The transmitter circuit is composed of the transistor T1 and the external circuits, the tuning circuit L1...
Panasonic ( National ) mx8c movement color TV remote control circuit diagram
Preset Outage Timer of Electric Cooker Remote_Control
As shown in the figure is a preset outage timer of electric cooker circuit. Time of the timing circuit ranges from 1 hour to 12 hours, which can be regulated by PR.The timing mode is counting typeand control method mode is preset outage timing. The circuit uses BT33 to produce trigger signals of thyristor VS. If BT33 stops vibrating, VS will...
Radio remote control car sending schematic diagram
Remote control electric hoist control circuit diagram 1
The remote control electric hoist control circuit consists of the wireless transmitter, wireless receiver control circuit and the main control circuit. Wireless transmitter uses TWH9326 four key BP transmitter. Wireless receiver control circuit consists of the power supply circuit, wireless receiver integrated circuit IC2 and control...
Remote control robot circuit
The remote control robot circuit is as shown in the figure. The figure 2-36(a) is the circuit diagram, the figure 2-36(b) is the operating timing diagram. The rotation process of the rebot is: in the circuit, the ultrasonic launching circuit is composed of the 40kHz oscillating circuit and driving circuit. The two sensors receive the ultrasonic...
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...
Stepper Motor Circuits
Direction Finder Circuits
Power Control Circuits
Motor Control 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
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial